Tag Archive: AC-DC Adapter

Jul 27

DC 4V-9V Adjustable Voltage Regulator

DC 4V-9V Regulator-schematic-diagram

  Parts List Resistor : R1,R2 …………………………. 2,2K R3 ………………………………. 15K R4 ………………………………. 22K R5 ………………………………. 10K Variable Resistor : VR1 ………………………………. 2K Capacitor : C1,C2 ………………….. 2,2uF/25V C3 ………………………. 10uF/10V Transistor : TR1,TR2,TR3 …………. FCS 9014D TR4 …………………………… BC 140 Diode : D1 ……………………………… ZD 12V