Description and Circuit
Make your own lab power supply complete with adjustable voltage and constant current source.
Using single IC (LM324)
Here is the circuit.
Strip Board Layout.
Part List
1 LM324 Opamp
1 Ammeter 100 µA 1k ohm
1 Voltmeter
6 IN4001
1 Zener Diode 9.1V
1 Full-Wave Bridge Rectifier
1 LED
2 NPN Transistor, 2N3055
1 NPN Transistor, BC109C
1 Transformer
2 E-Capacitor 2200µF
1 Potentiometer 5k ohm linear
1 Potentiometer 10k ohm linear
1 Resistor 500 ohm
2 Resistor 2.2k ohm
1 Resistor 560 ohm
1 Resistor 6.2k ohm
2 Resistor 68k ohm
1 Resistor 0.22 ohm
4 Resistor 4.7k ohm
Component Image.
![]() LM324 | ![]() 2N3055 |
Some Pictures.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEi4XU5y_D3IDsqdF76qxDUbSRlBRVRsh2pezZzTZ40SvICZD_UNxxG6PtspYP9cf5PfngSB7O9LVq5dB_mdXr0-ZzyW6ceABDHnvf_6G333JHV4ev1Rs7ETfPFlD3dhQ2sqtQ5qXpj6ERbs/s320/05.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhX_xxsyFtks5eL57uSdGZjAAo71sYIey-WJbDN4C1Ulcv956fpXQXeeFDreFD24Z_XywkmIdu18N7OOk0Zgz2r7Nqa_ELVpkswnVWuJEDiA1slLn-HoDUgdKxvD8OFGcn1CE36wfAYRscY/s320/07.jpg)
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhWnQepKC_0JaiigqMXQM-2tsagm4C2OxJhG8TvY4C0Ci1_OMRo9OKCRl_DRrnk3gQwZGswz_PU4yXYeHKqk57KxExSnD-WryjOE6QksF_pCGWI01_1AxBY7b2Y_lfhfpYT020Bpi67_PWi/s320/06.jpg)
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