This is circuit variable voltage Regulator 3-30V at 3A max, by used IC LM723 for control volt stable regulated. The 2N3055 power transistor for boost up current to 3 amp. The VR1 used control output 3V to 30V. It suitable for general electronics work shop. Because it is a simple circuit and easy circuit.
|LM723 - Variable Voltage Regulator circuit|
- T1 can be a 220V primary, 32VCT secondary, 3A step down transformer.
- MJ3001 power transistor must be fitted on a proper heat sink.
- Output voltage can be adjusted by using the POT RV1.