make adjustable DC power supply 0 - 25 V. Very easy home made, DIY.
and Cheap...!
Download Circuit Diagram : https://drive.google.com/open?id=0B0H4hwbNhR-GZVNEUXRYMUlENVU
Components List :
1: 12-0-12, (1A) step-down transformer
2: 4 diodes , (1A), number 1N4007
3: 1 piece 470uF, 35V capacitor
4: 2 piece 10uF , 35V capacitor
5: 1K and 240 Ohm resistor
6: 5k potentiometer,
7: linear voltage regulator LM317
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