EEssential
The essence of electrical engineering.
Saturday, October 15, 2011
Low temperature electronics
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The commercial temperature range for electronic components is 0 °C to 70 °C, industrial −40 °C to 85 °C and military −55 °C to 125 °C. So ...
Thursday, September 29, 2011
Waveforms
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UART RS232 921600 Baud
Saturday, September 17, 2011
Batteries
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Samsung cell phone battery Li-ion 3.7V 900mAh 4.6x3.4x0.5cm 19g Samsung cell phone battery Li-ion 3.7V 1000mAh 21g Energizer NiMH AA 1.2V ...
Monday, June 6, 2011
Open-source tools for ARM microcontrollers
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The ARM (Advanced RISC Machine) architecture appears in many 32-bit microcontrollers. I have NXP (Philips) LPC2138 (ARM7TMDI-S) and Luminary...
Sunday, May 29, 2011
Solid state relay
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Solid state relays that carry large current are bulky. A simply way to have a small optocoupler driving a power MOSFET.
Monday, March 28, 2011
Layout Check List
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DRC Make sure the rules are complete Resolve all DRC errors Footprint verification Check for footprint orientation, pin assignment, espe...
Tuesday, January 25, 2011
Miniature servo drive
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A miniature servo motor may require a voltage of 5V or less and current of 200mA. An audio amplifier is ideally suitable to drive this type...
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