lm317 adjustable power supply
lm317 adjustable power supply is a easily built one.with a 12v 1 ampere transformer its capable of supplying 2v - 15v dc voltages.its enough for most of hobby projects.in here i have used half wave 12v transformer and result is quiet good.
circuit :
all diodes used here are 1n4007 D4 can be replaced by a 1 AMP schottky diode. if its hard to fine 4.7k pot replace it by a 5k or 6.8 k one.
PCB :
circuit :
PCB :
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