my power supply
DESCRIPTION
circuit of a power supplyTRANSCRIPT
Specification:Input voltage of 220 VOutput voltage ranges from 1.2 to 30 V (DC)
Schematic Diagram:
Materials:
(IC1)LM317T(D1-D4) 1N4001 Diode(D5-D6) 1N4007 Diode(R1) 220 ohm Resistor (R2) 12Kohm Resistor(VR1) 10Kohm Potentiometer(C1) 1,000uF 35 V Electrolytic(C2) 0.1uF 63 V Electrolytic(C3) 470uF 35 V Electrolytic(C4) 10uF 35V Electrolytic(T1) Transformer secondary coil 24V 1A
The layout of the PCB:
Pictures:
Test for Reliability and Accuracy (Trial 1)
Voltage OutputVoltage Output (Measured)Percent Error %
5 V
10 V
15 V
20 V
25 V
30 V
Test for Reliability and Accuracy (Trial 2)
Voltage OutputVoltage Output (Measured)Percent Error %
5 V
10 V
15 V
20 V
25 V
30 V