Power Supplies

The power supplies I have built and they work for me and I hope they will work for you.

This power supply is very easy to build. I used two transformers and two LM317HCK 3A voltage regulator. The voltage adjust 1.25 to 20 volts. I have the adjustable power supplies set for a negative and positive voltage supply. I use a simple design so that fits in the case. The LCD that I bought them at Jameco. The +15, -15, +5, and -5 voltages use the 7800 and 7900 series voltage regulators for fix voltage. The current is fix at 1.5 amps. There is no adjustable current.

better schematics and more coming soon

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