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Advanced Microprocessors
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| Advanced Microprocessors by A. Gupta, Hoo-Min D. Too... | ![]() |
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US $15.95 | 26d 22h 22m |
| Advanced Microprocessors by Daniel Tabak | ![]() |
US $7.98 | 25d 3h 40m |
| Advanced Intel Microprocessors: 80286, 80386, And 80486 | ![]() |
US $8.00 | 24d 15h 14m |
| Survey of Advanced Microprocessors by Andrew M. Veronis (1991, Hardcover) | ![]() |
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US $2.99 | 22d 9h 34m |
| Advanced Concepts In Using Microprocessors: June 18-19 Palo Alto, California; Ju | ![]() |
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US $18.94 | 19d 15h 22m |
| Advanced Microprocessors by Daniel Tabak (1994, Paper Back) | ![]() |
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US $30.00 | 26d 17h 16m |
| HEATHKIT ZENHITH EDUCATIONAL SYSTEMS ADVANCED MICROPROCESSORS 2 MANUALS 15CHPTR | ![]() |
0 Bid | US $49.99 | 1d 14h 48m |
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Marvel 25IM BuiltIn Ice Maker With Advanced Microprocessor Technology |
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The Marvel 25IM produces as much as 12 pounds of ice per day - perfect for home bars or even recreational use. You can get ice right when you need it and, best of all, you can store up to 15 pounds of ice every day! With a highly efficient compressor and enhanced microprocessor technology, this built-in ice maker offers superior temperature control for fresh ice cubes whenever you need them. Available in three colors: black, white, and stainless steel.No-Drain DesignThe Marvel 25IM ice maker features a no-drain design that saves you time and effort. You don't have to constantly go back and forth emptying any extra containers!Low-Maintenance ExteriorThe 25IM feature powder coat painted steel cabinets and doors in black, white, and stainless steel. Sleek and attractive, the ice maker doesn't require much maintenance.Makes and Stores IceNot only does this efficient ice maker make up to 12 pounds of ice every day, but it also stores as much as 15 pounds of ice!Superior Temperature ControlWith enhanced microprocessor technology and a commercial condenser design, the Marvel 25IM built-in ice maker provides superior temperature control for a constant supply of fresh ice. |
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Schumacher SC-600A SpeedCharge High Frequency Battery Charger List Price: $63.35 Sale Price: $30.79 |
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Schumacher SC-600A 6/4/2 Amp 12 Volt SpeedCharge High Frequency Battery Charger Schumacher SC-600A 6/4/2 Amp 12 Volt SpeedCharge High Frequency Battery Charger Features: Fully automatic 6 amp medium charge monitors battery condition and adjusts charge rate downward to prevent battery damage, for car, truck, motorcycle, ATV, snowmobile, lawn tractor lead acid, and AGM batteries 4 amp medium charge has self-adjusting charge rate ideal for everyday charging needs and keeping your battery in peak condition 2 amp slow charge for charging small batteries and maintaining large ones, charges motorcycle, ATV, snowmobile, and lawn tractor batteries 50 amp clamps for top and side-mounted battery posts Electronic push button controls have easy-to-feel switches for selection of Charge Rate or Battery Type Choose between 6 or 12 volt batteries Sturdy, built-in handle serves as convenient cord wrap and for easy portability Schumacher Limited 5 year warranty The Schumacher SC-600A SpeedCharge is a fully automatic battery charger that uses advanced technology to charge up to twice as fast as conventional chargers. It offers 6-, 4-, and 2-amp charging modes to efficiently charge and maintain connected batteries. The 50-amp clamps are compatible with both top and side-mounted battery posts. Its easy-to-read LED indicators show battery charge status at a glance. Multi-stage, automatic charging for 6V and 12V batteries Multiple Charging Modes Choose from 2-amp, 4-amp, and 6-amp charging modes to quickly charge all types and sizes of batteries. In 6-amp Fast Charge mode, the charger monitors battery condition and adjusts charge rate downward to prevent battery damage for car, small truck, motorcycle, and lawn tractor lead-acid and AGM battery types. 4-amp Medium Charge is a self-adjusting charge rate that's ideal for everyday charging needs and for keeping your battery in peak condition. 2-amp Slow Charge is a trickle setting for charging and maintaining small batteries, such as those for motorcycles, ATVs, snowmobiles and lawn tractors. Electronic Push Button Controls The SC-600A features easy-to-feel switches for selection of Charge Rate or Battery Type. Choose between 6- or 12-volt batteries, as well as selecting Fast, Medium, or Slow Charge. Sturdy, Built-In Handle The built-in handle serves as convenient cord wrap for the 50-amp clamps and power cord, in addition to providing easy portability. Microprocessor Controlled Microprocessor Controlled Technology with multi-stage charging lets the Schumacher SC-600A deliver added precision, safety, and battery life. This technology lets you charge your motorcycle, car, or utility vehicle batteries up to 2x faster than using conventional chargers. Fully Automatic Operation The SC-600A automatically switches from Continuous Charge to Float-Mode Monitoring, which allows the charger to maintain the battery when fully charged. The SC-600A resumes continuous charging when the battery becomes discharged. Technical Specifications Input Voltage: 120V AC Output Voltage: 6V/12VDC Output Power: 2A/4A/6A continuous Amperage Control: Push-button RoHS Compliant: Yes Energy Star Compliant: No Certifications: UL, CUL Warranty: 5 Year Dimensions: 6.9" x 3" x 7.5" Weight: 2.1lbs |
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Bosch BC130 9-3/5-to-24-Volt Stick and Pod Style 30-Minute Battery Charger List Price: $108.00 Sale Price: $61.19 |
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30 Minute Battery Charger, Fits All Bosch BlueCore Batteries. |
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Leviton OSC15-I0W Ceiling Mount Occupancy Sensor, PIR, 360 Degree, 1500 sq. ft. Coverage, Self-Adjusting, White List Price: $69.47 Sale Price: $54.99 |
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PIR, 360 Degree, 1500 Sq. Ft.Coverage, Self-Adjusting, Ceiling Mount Occupancy Sensor, Commercial Grade - White California Title 24 Compliant, UPC: 07847718058 |
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Tenergy Advanced Universal Charger TN190 (4 Channel AA/AAA/C/D/9V Ni-MH Charger with LCD Display and USB Power Outlet) Sale Price: $29.99 |
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Safety Features: *With safety timer control for overcharge protection. *With negative delta V (- ?V) cut-off function (except for 9V batteries). *With mechanical protection against reverse polarity. *With short circuit protection. *With non-rechargeable/bad cell detection. Charging Time Table Battery Type (Ni-MH) Capacity Charging time (approx.) AAA 500-1200mAh 1.5 - 2.5 hours AA 1300-2800mAh 1.5 - 2.5 hours C 1800-4500mAh 1.5 - 4 hours D 1800-9000mAh 1.5 - 7 .5 hours 9V 150-300mAh 5-10 hours |
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Tenergy TN141 2 Bay 9V Smart Charger with 4 pcs 9V 250mah NiMH Rechargeable Batteries Sale Price: $26.97 |
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Charger Features * Rapid charging * Worldwide voltage 100V ~ 240VAC * Automatically detect-Delta V * Microprocessor controlled to ensure charger safety * LED indicator for each individual bay Features * Applicable for 9V rechargeable Ni-MH batteries * Worldwide voltage 100V ~ 240VAC * Built-in micro-controller to ensure full charge * 5hr safety timer * Circuit / polarity protection * Automatically detect - delta V * LED indicator for each individual bay * Indicator status: Charging: RED, Fully charged: GREEN Battery Type Capacity Charging time 1~2pcs Ni-MH 9V 160mAh 1.8 hrs 180mAh 2.0 hrs 200mAh 2.2 hrs 220mAh 2.5 hrs Specifications * Outlet input voltage: 11.4V * Charge current: 100mA x2 * Operating Temp: 0 ~ 40°C * Weight: 83g Download product manual here. Tenergy 9V 250mAh Features and Benefits * High quality 9V rectangular size rechargeable Nickel Metal Hydride (NiMH) battery Ultra high capacity of 250mAh * Exact replacement for standard 9V rectangular size battery * Provides very long use time per charge with this high 250 mAh capacity * Advanced Ni-MH technology means much longer use life per charge than other rechargeables * Designed for enhanced performance for high drain applications such as: R/C controller, detector, transmitter, and other portable high drain digital electronics * Can be recharged for up to 1000 times, providing big savings by replacing hundreds of expensive throw away 9V rectangular size batteries. * Convenient operation without memory effect. * Can be rapidly charged with our chargers model TN141, TN136, TN137, T9688, BC1HU, V1199B, T2299 V3969A1, T228. * Dimensions: (H x L x W): 48mm x 26mm x 16mm. * Weight: 1.6oz per cell * 6 months warranty. * Battery tested based on International Electronic Commission (IEC) standard to ensure capacity, quality and life time |
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Tenergy TN141 2 Bay 9V Smart Charger with 2 pcs 9V 250mah NiMH Rechargeable Batteries Sale Price: $16.97 |
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Charger Features * Rapid charging * Worldwide voltage 100V ~ 240VAC * Automatically detect-Delta V * Microprocessor controlled to ensure charger safety * LED indicator for each individual bay Features * Applicable for 9V rechargeable Ni-MH batteries * Worldwide voltage 100V ~ 240VAC * Built-in micro-controller to ensure full charge * 5hr safety timer * Circuit / polarity protection * Automatically detect - delta V * LED indicator for each individual bay * Indicator status: Charging: RED, Fully charged: GREEN Battery Type Capacity Charging time 1~2pcs Ni-MH 9V 160mAh 1.8 hrs 180mAh 2.0 hrs 200mAh 2.2 hrs 220mAh 2.5 hrs Specifications * Outlet input voltage: 11.4V * Charge current: 100mA x2 * Operating Temp: 0 ~ 40°C * Weight: 83g Download product manual here. Tenergy 9V 250mAh Features and Benefits * High quality 9V rectangular size rechargeable Nickel Metal Hydride (NiMH) battery Ultra high capacity of 250mAh * Exact replacement for standard 9V rectangular size battery * Provides very long use time per charge with this high 250 mAh capacity * Advanced Ni-MH technology means much longer use life per charge than other rechargeables * Designed for enhanced performance for high drain applications such as: R/C controller, detector, transmitter, and other portable high drain digital electronics * Can be recharged for up to 1000 times, providing big savings by replacing hundreds of expensive throw away 9V rectangular size batteries. * Convenient operation without memory effect. * Can be rapidly charged with our chargers model TN141, TN136, TN137, T9688, BC1HU, V1199B, T2299 V3969A1, T228. * Dimensions: (H x L x W): 48mm x 26mm x 16mm. * Weight: 1.6oz per cell * 6 months warranty. * Battery tested based on International Electronic Commission (IEC) standard to ensure capacity, quality and life time |
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Hp Mini- Pink |
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Product Name 210-2145DX Product Number XY949UA#ABA Microprocessor 1.66GHz Intel Atom Processor N455 Microprocessor Cache 512KB L2 Memory 1GB DDR3 System Memory (1 DIMM) Memory Max 1GB Video Graphics Intel Graphics Media Accelerator 3150 Video Memory Up to 256MB Hard Drive 250GB (7200RPM) Display 10.1" diagonal WSVGA HP BrightView Infinity LED Display (1024 x 600) Network Card Integrated 10/100 Ethernet LAN Wireless Connectivity 802.11b/g/n WLAN Sound Dolby Advanced Audio Keyboard 93% full-size island-style keyboard Pointing Device HP Clickpad with On/Off button External Ports Multi-Format Digital Media Card Reader for Secure Digital cards, Multimedia cards, Memory Stick, and Memory Stick Pro 3 Universal Serial Bus (USB) 2.0 1 VGA (15-pin) 1 RJ -45 (LAN) 1 Headphone-out/Microphone-in combo jack (compatible with 3.5mm 4-conductor jack with stereo audio and mono mic) Dimensions 10.55" (L) x 7.51" (W) x 0.9"(min H)/ 1.26" (max H) Weight 3.10 lbs Security Kensington MicroSaver lock slot |
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HM Digital Handheld Conductivity Tester EC-3 with Case Sale Price: $22.95 |
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Ideal for all water purification applications, wastewater regulation, aquaculture, hydroponics, and colloidal silver. Perfect for both consumer or commercial use. Carry one in your pocket or toolbox at all times! Features Ideal for commercial use. Includes a carrying case with belt clip. Highly efficient and accurate due to its advanced microprocessor technology. Hold Function: saves measurements for convenient reading and recording. Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries. Measurement Range: 0-9990 µS. From 0-999 µS, the resolution is in increments of 1 µS. From 1000 to 9990 µS, the resolution is in increments of 10 µS, indicated by a blinking 'x10' image. Built-in digital thermometer Display: large and easy-to-read LCD screen. Factory Calibrated: our meters are calibrated with a 700 µS NaCl solution. Meters can be recalibrated with a mini-screwdriver. Specifications TDS Range: 0 - 9990 µS (µS/cm) Temp. Range: 0 - 80 degrees Celsius Resolution: 1 µS; 10 µS, 0.1 degree Celsius Accuracy: +/- 2% ATC: Built-in sensor for Automatic Temperature Compensation of 1 to 50o C (33 to 122o F) Power source: 2 x 1.5V button cell batteries (included) Battery life: 1000 hours of usage Dimensions: 15.5 x 3.1 x 2.3cm (6.1 x 1.25 x 1 inches) Weight with case: 76.5g (2.7 oz) Weight without case: 56.7g (2 oz) |
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AMD Athlon 64 2650e / 1.6 GHz Processor (DM9886) Category: Processors List Price: $84.04 |
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Item #: DM9886. You live at the forefront of technology, and you won't settle for less from your favorite software. That's why AMD is proud to bring you the AMD Athlon 64 processor, with AMD64 technology for dramatically higher performance and built-in support for future 64-bit applications - even running 32- and 64-bit software at the same time. Maximize system efficiency and stay ahead of the curve with the technically superior PC processor, packed with advances such as HyperTransport technology and an integrated DDR memory controller. Whether it is for business, school or play, with the AMD Athlon 64 processor, you can address your current and future computing needs. Product Type: ProcessorProcessor Type: AMD Athlon 64 2650e64-bit Computing: YesCompatible Processor Socket: Socket AM2Processor Qty: 1Clock Speed: 1.6 GHzManufacturing Process: 65 nmCache Memory: L2 512 MBFeatures: HyperTransport technology, AMD64 technology, integrated memory controller, Enhanced Virus ProtectionCompatible Slots: 1 x processor - Socket AM2 Customers also search for: Technology\Computer Components\Motherboards, Processors and Memory\Processors Discount AMD Athlon 64 2650e / 1.6 GHz Processor, Buy AMD Athlon 64 2650e / 1.6 GHz Processor, Wholesale AMD Athlon 64 2650e / 1.6 GHz Processor, ADG2650IAV4DP, Processors |
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Canon EF 28-135mm f/3.5-5.6 IS USM Standard Zoom Lens for Canon SLR Cameras - White Box List Price: $499.99 Sale Price: $347.00 |
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The Canon EF 28-135mm f/3.5-5.6 IS Lens is a compact and lightweight standard zoom lens that offers superior optical performance, plus a built-in Image Stabilizer. The IS system reduces the possibility of blurred photographs caused by camera shake, which allows for hand held photography in comparatively dim light without a flash or tripod. At the wide angle end of the zoom range, the equivalent shutter speed gain is approximately 1.5 stops while at the telephoto end, it is approximately 2 stops. Also, the lens has a USM drive mechanism for faster and quieter AF operation, and the pulse control diaphragm (EMD) ensures precise aperture control. Note! White Box products comes supplied in a plain white box, instead of the manufacturer's packaging. It still includes all the manufacturer's accessories. |
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Elenco 500-in-One Electronic Project Lab List Price: $399.95 Sale Price: $217.92 |
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A short review cannot do justice to this well-conceived, well-made, and endlessly fascinating "toy"--actually a complete electronics lab that could absorb weeks in the life of anyone over the age of ten who doesn't already have a degree in electronics. The 16-inch by 13-inch attaché case opens to reveal a 31-key programming keyboard and a bewildering array of connectors, switches, wires, transistors, diodes, and processors. At least they would be bewildering if it were not for three big books: Hardware Entry Course, Hardware Advanced Course, and Software Programming Course, which total about 300 dense pages detailing 500 projects (memory backups, car horn imitators, LED counters, ramp wave generators, you name it.) This bag of tricks can teach an immense amount about basic wiring, the properties of electricity, transmitters and receivers, programming, and much more. Six AA batteries required. --Richard Farr Everything you need to build 500 Exciting Electronic Projects |
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VINCI 7-Inch Touchscreen Mobile Learning Tablet (4GB) List Price: $389.00 Sale Price: $389.00 |
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VINCI 7" Touch Screen Mobile Learning Tool Invented by a mom, VINCI is a new category of early learning systems exclusively designed for children ages 4 and under.VINCI sets a new standard for learning by converging developmental science, cutting edge technology and early childhood education to offer a safe, fun and inspirational learning experience. Key Features Developmental ScienceVINCI Tab, VINCI's first early learning system, comes complete with part of the VINCI Early Learning Curriculum.The games, story books and music videos are specifically designed for fun, parent-guided and interactive education which is mapped to be inter-connected and designed to provide levels of learning according to each child's age and capability.Age Norms are scientifically proven milestones that cover developmental stages including motor and social/emotional skills as well as language and cognitive abilities.Cutting Edge TechnologyVINCI Tab features a 7-inch touchscreen and Android OS based on the most advanced Cortex A8 microprocessor. For the first time, young children are offered a true technological device equally advanced as their parents tablets. VINCI offers young children the best of the world, because our future relies on children.Early EducationVINCI taps into the early childhood education, focusing on nurturing Curiosity, Critical thinking, Capability to observe and discover, Control and discipline, Confidence and Communication, with the goal to build our children's character and foster a winning attitude. VINCI embraces exploration based, child led and parent guided playful learning where children have fun, and are in control. VINCI apps encourage parent-child joint attention with fun for both parents and children.SafetyUnlike other tablets and devices on the market, VINCI Tab has no WIFI functions or wireless technology, which minimizes emissions and protects children from unwanted content on the Internet. Parents have full control over what their children play. VINCI Tab uses exclusively non toxic, medical and food grade materials for the handle and housing. GamesThrough a series of 3D animated games, VINCI challenges conventional thinking about early childhood education by promoting 'active learning' over 'passive watching.' VINCI Games are mapped to developmental milestones based on Age Norms, in a real world context, designed to help parents and children explore, play, have fun, and learn together. Music VideosMusic is a great way to introduce your child to the real world and is proven to develop a wide variety of motor and cognitive skills. Sing-n-Dance album including 12 songs is for fun sing alone and dance together, with Baby Haha's simple gestures for your little one to imitate and for you to enjoy. Lullabies including 8 soothing songs help you to quiet your child down before nap or bed time. StorybooksVINCI Story books re-tell children's classics using an engaging learning approach. Children are able to touch objects on the screen and experience the delight of immediate interactive feedback. The stories are told using simple language allowing your child to learn language and to understand the ideas behind the stories. CameraWith VINCI Tab's 3 megapixel built-in camera, parents can easily capture every step of their child's unique progress. VINCI Diary reminds parents about what they can expect in terms of developmental milestones at each specific age of their child, and link pictures and videos to create the child's very own story book. VINCI Diary is available for download in autumn 2011 to VINCI Tab users who have registered their purchase at VINCIGenius web site. Technical Details Processor: Cortex A8 7 inch (diagonal) multi-touch screen LCD Resolution: 800x480 Rear Facing camera 3 Mega -pixel Android 2.3 Memory: 514MB Internal Storage: 4GB Battery: 3200mAH Lithium Ion) Power (normal use): 3 hours Wireless: not installed Weight: 1.3 lb VINCI Early Learning Apps: Games: Explorations Story Books: Ugly DuckMusic Videos: Baby Haha's Music Adventure Volume 1 Vinci VL1001 VINCI Tab4GB internal storage; A8 800MHz Processor Cortex; 7" 800x480 Display; ExpandableMemory (Micro SD); Android 2.3Specifications:Storage: 4GB internal storageProcessor cortex: A8 800MHzDisplay: 7" 800x480Expandable Memory (Micro SD)Battery & Power: 3200mAHGame Series: ExplorationsStorybooks: Ugly DuckMusic Videos: Sing-n-Dance, LullabiesRAM: 512 MBAndroid 2.3 |
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VINCI 7-Inch Touchscreen Mobile Learning Tablet (8GB) List Price: $479.00 Sale Price: $465.00 |
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VINCI 7" Touch Screen Mobile Learning Tool Invented by a mom, VINCI is a new category of early learning systems exclusively designed for children ages 4 and under.VINCI sets a new standard for learning by converging developmental science, cutting edge technology and early childhood education to offer a safe, fun and inspirational learning experience. Key Features Developmental ScienceVINCI Tab, VINCI's first early learning system, comes complete with part of the VINCI Early Learning Curriculum.The games, story books and music videos are specifically designed for fun, parent-guided and interactive education which is mapped to be inter-connected and designed to provide levels of learning according to each child's age and capability.Age Norms are scientifically proven milestones that cover developmental stages including motor and social/emotional skills as well as language and cognitive abilities.Cutting Edge TechnologyVINCI Tab features a 7-inch touchscreen and Android OS based on the most advanced Cortex A8 microprocessor. For the first time, young children are offered a true technological device equally advanced as their parents tablets. VINCI offers young children the best of the world, because our future relies on children.Early EducationVINCI taps into the early childhood education, focusing on nurturing Curiosity, Critical thinking, Capability to observe and discover, Control and discipline, Confidence and Communication, with the goal to build our children's character and foster a winning attitude. VINCI embraces exploration based, child led and parent guided playful learning where children have fun, and are in control. VINCI apps encourage parent-child joint attention with fun for both parents and children.SafetyUnlike other tablets and devices on the market, VINCI Tab has no WIFI functions or wireless technology, which minimizes emissions and protects children from unwanted content on the Internet. Parents have full control over what their children play. VINCI Tab uses exclusively non toxic, medical and food grade materials for the handle and housing. GamesThrough a series of 3D animated games, VINCI challenges conventional thinking about early childhood education by promoting 'active learning' over 'passive watching.' VINCI Games are mapped to developmental milestones based on Age Norms, in a real world context, designed to help parents and children explore, play, have fun, and learn together. Music VideosMusic is a great way to introduce your child to the real world and is proven to develop a wide variety of motor and cognitive skills. Sing-n-Dance album including 12 songs is for fun sing alone and dance together, with Baby Haha's simple gestures for your little one to imitate and for you to enjoy. Lullabies including 8 soothing songs help you to quiet your child down before nap or bed time. StorybooksVINCI Story books re-tell children's classics using an engaging learning approach. Children are able to touch objects on the screen and experience the delight of immediate interactive feedback. The stories are told using simple language allowing your child to learn language and to understand the ideas behind the stories. CameraWith VINCI Tab's 3 megapixel built-in camera, parents can easily capture every step of their child's unique progress. VINCI Diary reminds parents about what they can expect in terms of developmental milestones at each specific age of their child, and link pictures and videos to create the child's very own story book. VINCI Diary is available for download in autumn 2011 to VINCI Tab users who have registered their purchase at VINCIGenius web site. Technical Details Processor: Cortex A8 7 inch (diagonal) multi-touch screen LCD Resolution: 800x480 Rear Facing camera 3 Mega-pixel Android 2.3 Memory: 514MB Internal Storage: 8GB Battery: 6400mAH Lithium Ion) Power (normal use): 6 hours Wireless: not installed Weight: 1.3 lb VINCI Early Learning Apps: Games: Explorations, The World: AfricaStory Books: Ugly Duck, Smart Ant, Boy Who Cried WolfMusic Videos: Baby Haha's Music Adventure Volume 1 Vinci VH2001 VINCI Tab8GB internal storage; A8 1.2GHz Processor Cortex; 7" 800x480 Display; ExpandableMemory (Micro SD); Android 2.3Specifications:Storage: 8GB internal storageProcessor cortex: A8 1.2GHzDisplay: 7" 800x480Expandable Memory (Micro SD)Battery & Power: 6400mAH (up to 6 hours)Game Series: ExplorationsStorybooks: Ugly DuckMusic Videos: Sing-n-Dance, LullabiesRAM: 512 MBAndroid 2.3 |
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Schumacher SC-1200A SpeedCharge 12/8/2 Amp Charger/Maintainer/Starter/Tester List Price: $176.00 Sale Price: $39.95 |
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The Schumacher SC-1200A SpeedCharge is a fully automatic battery charger that uses advanced technology to charge up to twice as fast as conventional chargers. It offers 2-, 8-, and 12-amp charging modes to efficiently charge and maintain connected batteries. The 50-amp clamps are compatible with both top and side-mounted battery posts. Its easy-to-read LED indicators show battery charge status at a glance. Quickly charge and maintain conventional automotive batteries, deep-cycle, AGM, and gel cell batteries. Multi-stage, automatic charging for 6V and 12V batteries Multiple Charging Modes Choose from 2-amp, 8-amp, and 12-amp charging modes to quickly charge all types and sizes of batteries. In 12-amp Fast Charge mode, the charger monitors battery condition and adjusts charge rate downward to prevent battery damage for car, truck, marine, RV, and farm equipment batteries. 8-amp Medium Charge is a self-adjusting charge rate that's ideal for everyday charging needs and for keeping your battery in peak condition. 2-amp Slow Charge is a trickle setting for charging and maintaining small batteries, such as those for motorcycles, ATVs, snowmobiles and lawn tractors. Electronic Push Button Controls The SC-1200A features easy-to-feel switches for selection of Charge Rate or Battery Type. Choose between regular, deep-cycle, or AGM battery type, while selecting Fast, Medium, or Slow Charge. Sturdy, Built-In Handle The built-in, retractable handle serves as convenient cord wrap for the 50-amp clamps and power cord, in addition to providing easy portability. Microprocessor Controlled Microprocessor Controlled Technology with multi-stage charging lets the Schumacher SC-1200A deliver added precision, safety, and battery life. This technology lets you charge your motorcycle, car, or utility vehicle batteries up to 2x faster than using conventional chargers. Fully Automatic Operation The SC-1200A automatically switches from Continuous Charge to Float-Mode Monitoring, which allows the charger to maintain the battery when fully charged. The SC-1200A resumes continuous charging when the battery becomes discharged. Technical Specifications Input Voltage: 120V AC Output Voltage: 12VDC Output Power: 2A/8A/12A continuous Amperage Control: Push-button RoHS Compliant: Yes Energy Star Compliant: No Certifications: UL, CUL Warranty: 5 Year Dimensions: 7.6" x 3.5" x 9.8" Weight: 3.1lbs 12A/8A/2A, Speed Battery Charger, For 12V Batteries, 12A Fast Charge Monitors Battery Condition & Adjusts Charge Rate Downward To Prevent Battery Damage, For Car, Truck Marine, RV, Farm Equipment, Agm, Gel Cell & Deep Cycle Batteries, 8A Medium Self Adjusting Charge Rate Ideal For Everyday Charging Needs & Keeping Your Battery In Peak Condition, 2A Slow Charge For Charging Small Batteries & Maintaining Large Ones, Charges Motorcycle, ATV, Snowmobiles & Lawn Tractor Batteries, Easy To Read Digital Meter, 50A Clamps, Retractable Handle, Self Stored Cables, System Test Helps Diagnose Problems With Battery & Charging System, & Electronic Push Button Controls. |
Consider Your Materials Carefully In Microprocessor And ASIC Design
Microprocessor and ASIC designers must address the thermal and mechanical protection of IC die while considering system cost and reliability. Lids and heatsinks are common solutions for mechanical protection.
To ensure reliability, designers seek to minimize die junction temperature and often consider high thermal conductivity to be the most important attribute of lid material. Yet thermal performance and reliability hinges on other factors: match or mismatch of coefficient of thermal expansion (CTE) between the lid and assembly materials, lid stiffness/flatness, weight, dimensional tolerances, and package design.
THERMAL MANAGEMENT
Thermal management techniques provide adequate thermal dissipation without adding mechanical stress to the IC from thermal expansion differences between the IC, lid, substrate, interface materials, and other materials in the package.
The most common lid materials for microprocessors and ASICs are copper (Cu), aluminum (Al), and aluminum silicon carbide (AlSiC). With a thermal conductivity value around 400 W/mK at room temperature, copper has the highest thermal conductivity of available materials. The thermal conductivity of AlSiC and wrought aluminum are 190 and 200 W/ mK, respectively.
Designers must also consider thermal cycling issues associated with the CTE values of the die and lid as well other combinations. CTE generally isn’t an issue with a die size less than 5 mm and heat flux less than 10 W/cm2. As die size and heat flux increase, CTE differences between lid, die, lid flatness, and weight have a significant effect on thermal performance, and choosing a lid material with a CTE compatible with the die becomes important.
Compatible lid material CTE values will reduce die assembly flexing and distortions during thermal cycling. Comparing average CTE values of lid and common die materials at 150°C, AlSiC most closely matches gallium-based IC materials. A solder connection between lid and die yields maximum thermal dissipation in flip-chip applications.
The slightly higher CTE of AlSiC puts the die in slight compression during assembly and thermal cycling. However, higher CTE materials may impart catastrophic tensile forces on the IC with rising temperature. In any event, the closer CTE match of AlSiC will minimize package distortions during assembly and thermal cycling.
With twice the CTE of AlSiC, copper incurs greater system flexing, though it does have a higher thermal conductivity. Aluminum, with a 23-ppm/°C CTE, is unsuitable for high-power large applications due to the CTE mismatch.
MATERIAL DENSITY
Another consideration is lid material density. Density (weight) is not a thermal property, but can influence die protection during assembly and service. Consider the weight per solder ball of the IC. During assembly, high lid weight can deform solder balls during soldering (material creep). It also can potentially cause shorts between the balls.
In high-speed automated assembly, lid weight poses significant influence on package stress during acceleration/deceleration assembly shifts. Lid weight also affects shock and vibration resistance and stress state due to package orientation during service. These situations favor materials with lighter weight. Weight becomes more important for larger assemblies with lids larger than 40 mm2.
LARGE ASSEMBLIES
As systems become larger, the combination of lid material, shape, stiffness, flatness, and dimensional tolerances becomes as important as CTE and thermal conductivity values. Stiffness and dimensional tolerances affect the lid’s fit to the die.
The cavity depth of the lid is important in minimizing the gap between the die and lid. This depth, somewhat dependent upon lid flexibility, must be large enough to protect the die. For stiffer material, a shallower depth is acceptable, as stiffness will ensure no distortions of the lid during assembly, heatsink attachment, and/or service.
Lid-material stiffness increases with lid thickness, but this may not be acceptable due to weight constraints. With a less stiff lid, designers may need to impose tighter dimensions on cavity depth to maintain an acceptable bond line thickness. However, tighter dimensional tolerances increase the cost of manufacturing the lid.
MANUFACTURABILITY
Manufacturing processes and costs are additional considerations in choosing lid material. Each material has a preferential manufacturing process for lowest cost, but designers should consider full system costs, including the rate of quality.
A low-cost manufacturing process, stamping lids from sheet stock material is the conventional method for manufacturing copper and aluminum lids, restricting them to primarily 2D shapes and with limited 3D features. Stamped aluminum lids target low-power applications only due to aluminum’s high CTE and modest thermal conductivity. When die is small or power low, stamped copper lids can provide a cost-effective solution.
AlSiC uses a slightly more expensive casting process, but provides greater geometrical shape capabilities. In addition to its CTE compatibility with IC materials, AlSiC also allows larger lids due to lighter weight and higher stiffness.
About the Author
Mark A. Occhionero is Vice President For Marketing and Technical Sales for CPS Technologies Corp, Norton, Ma. He also serves in the role of Research and Development Senior Scientist. You can contact Mr. Occhionero by email at marko@alsic.com, via CPS Technologies website contact us http://www.alsic.com/contactus.html, or phone (508) 222-0614, Extension 242.
A question about Intel CPU Microprocessors, Which is better Pentium 4 3.8 GHz or Dual-Core 1.6 GHz..?
I don't know if this is a stupid question, but really I want to know, Thanks in advance.
I know there are much better CPUs than those and cheap, but I just wonder which one is better of those two, Thanks.
Everybody here will disagree with me, but I'd say go with the P4.
Of course, I assume that these are the only two chips you are considering. You could always buy a nice E5200 for not much money.
SemiCon Analyst Sees Huge Demand In Traffic Routing Microprocessors: Worldwide Traffic To Grow 40% Year-Over-Year
67 WALL STREET, New York - February 23, 2010 - The Wall Street Transcript has just published its Semiconductors, Semiconductor Equipment & EDA Software Report offering a timely review of the sector to serious investors and industry executives. This 29 page feature contains expert industry commentary through in-depth interviews with public company CEOs, Equity Analysts and Money Managers. The ...
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