Circuits & Schematics Power - 18

Subsection: "Power"
Search results: 250 Output: 171-180
  1. This is a precision 15V regulator on a single side PCB. The circuit is based on EB-802 with design by zerosoft on www.headphoneamp.co.kr . I have replaced some components that easy to find in the market and design a new PCB that look like symmetry ...
    13-10-2011
  2. JB Castro-Miguens, Cesinel, Madrid, Spain, and C Castro-Miguens, University of Vigo, Vigo, Spain Use a TRIAC and optocoupler to automatically change between doubler and bridge configurations The input-rectifier stage of an offline power supply ...
    15-09-2011
  1. George Woolcott Many battery-powered applications use very little power when idle and have short-duration operating periods. Thus, the total energy used is very small. It would be convenient to incorporate solar cells in these devices to charge the ...
    08-09-2011
  2. Hold the current constant and within tolerance. Steve Sheard, ON Semiconductor, Tempe, AZ LEDs are more efficient than incandescent lights and can last 100 times longer, but they require specialized electronic-drive circuits to avoid overstress ...
    23-08-2011
  3. Using Discharge Analyzer All operation of the battery discharge analyzer is commanded with a console. The port setting of the terminal program is N81 38400bps. Programming firmware The firmware must be programmed into the microcontroller after the ...
    06-06-2011
  4. The characteristics of the battery, especially the capacity and variation of the voltage on discharge, are needed to be known for circuit design of the battery powered equipments. The technical data of the junk battery is not that always available ...
    02-06-2011
  5. PN-junction diodes often have a dropout voltage of approximately 1.2V for silicon power diodes. That voltage drop causes power diodes to dissipate considerable power, resulting in a loss of efficiency in a power supply. In a photovoltaic panel with ...
    17-05-2011
  6. Keep LEDs lit when AC voltage drops. TA Babu, India LEDs need power when rectified ac-mains voltage drops during its cycle. The circuit in Figure 1 lets you use an inductor-less, switching, offline power supply as an LED driver for emergency-exit ...
    12-05-2011
  7. Kenneth Martin Lithium-polymer (LiPo) batteries have a higher power density than most other battery technologies. They also deliver a higher nominal voltage per cell: 3.7 V compared to 1.2 to 2 V for other cells. But that creates a problem if you ...
    05-05-2011
  8. Alan Stummer Fans can be necessary for circuit cooling, but continually running a fan at a rated voltage will cause mechanical failure, usually in the bushings or bearings. By running it only when and as fast as needed, you can greatly extend its ...
    04-05-2011
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