Subscribe0.7-24V 2A Variable power supply circuit diagram
This variable power supply circuit schematic is a simple power supply that give a variable voltage from 0.7 up to 24V and variable current limiting up to 2A.
With P1 potentiometer it's sets the maximum output current you want at a given output voltage and the P2 potentiometer it's used to set the output voltage and must be a logarithmic ,in order to obtain a more linear voltage indication.
The Transformer can be used for this supply must deliver : 36, 40 or 48V center-tapped and a power around 50, 75, 80 or 100VA. Capacitor C1 can have a value form 2200 to 6800µF.
Components
| Notation | Value/Description |
| R1,R2 R3 R4 R5 P1 P2 C1 C2 D1,D2 D3 Q1 Q2 Q3 Q4 T1 |
2K2 1/2W Resistors 330 Ohm ¼ W Resistor 150 Ohm ¼ Resistor 1 Ohm 5 W Resistor 500 ohm Liniar Potentiometer 10K Logaritmic Potentiometer 3300µF Electrolitivc 50V 1µF Electrolitic 50V 1N5402 200V 3A Led rosu 5mm BC182 50V 100mA NPN BD139 80V 1.5A NPN BC212 50V 100mA PNP 2N3055 60V 15A NPN Primar 220V , Secundar 36V cu priza mediana 50VA |
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