This is a DC to DC or AC to DC variable voltage and current lab power supply circuit diagram.
| Identifier | Component | Value | Count |
|---|---|---|---|
| C1 | Capacitor | 1000uF / 50W | 1 |
| VR1, VR2 | Linear Potentiometer | 5K Ohm | 2 |
| U1 | Linear voltage regulator | LM317 | 1 |
| U2 | Dual Operational Amplifier | LM358 | 1 |