1000W automatic voltage regulation AC power supply circuit - Power Circuit - Circuit Diagram
As shown in the circuit, T is an auto-coupled voltage regulator. The output is fixed and the input is automatically adjusted by the servo motor to keep the output constant.
Transistor VTl, VT2: 3DK9C, β=65~85; VT3: 3AX818, β=60~80; Diodes VD2, VD3, VD6~VD9: 1N4002; VD4, VD5, VD10: 1N4148; VD11: IN4001; LED VD1: BT304; Zener diode VD12: 2CW119; Capacitor C1: lμF400V; C2, C3: 0.1μF250V; C4, C5: 220μF25V; C6: 470μF50V; C7, C8: 47μF50V; Resistance Rl: 10kΩ; R2, R7: 510Ω; R3, R6: 2.7kΩ; R4: 470Ω; R5: 51Ω; resistance nominal power except resistor Rl selects more than 3W power, other selects 1/2~1/4W metal film resistor; potentiometer RPl, RP2: 1kΩ; relay Kl ~K3: JRK-13F; AC contactor KA: 522; servo motor M: ND-D; voltmeter PV: 85L1-0 ~ 250V; switch S1KN3 - 3; S2: KN-2W1D; fuse FU: BGOPΦ6-5A .
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