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LM317
Variable Voltage Power Supply Description: The LM317 is a three-pin regulator chip capable of using a standard potentiometer to vary voltage from 1.2VDC to 34VDC. The circuit is very simple to build and delivers very clean power at up to 1.5A. ** CHIP MUST BE HEATSUNK ** Schematic: PCB: Silk screen / part layout: Useage: Chip MUST be Heatsunk Connect a positive DC voltage to pad 1 and the ground to pad 2. Pad 3 is the postive output and pad 4 is the negative output.. |
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