schematic 1 3 volt power source

This circuit is a circuit diagram of resource replacement 1. 3V mercury cells or other small batteries. This has many uses and you can use this circuit in the computer to turn on a front panel multi adapter which has a digital thermometer. This circuit took power from the PC. Power connector cable has a color code, red and black is 12V supply, blac

k and yellow is the 5V supply. This is now so high that the absolute care must be taken to avoid short circuit and inline fuse of 100mA is recommended. The following is a schematic drawing:

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