330W AC regulated power supply - Power Circuit - Circuit Diagram

Probe current voltage pin 420*4450 head diameter 5.0 over current current and voltage pin

MOS power IC full range

1.5PF SOT23-6 Low Capacitance 5V Breakdown Voltage 6V SRV05

inductance

SMD aluminum electrolytic capacitor

In the figure, the actual values ​​of the R2, R4, R5, and R6 5 sampling resistors should be: 470kΩ±3kΩ, 3.7kΩ±300Ω, 1.5kΩ±100Ω, 1.8kΩ±100Ω, 8.2kΩ±200Ω; LED VD5: BT312( Red); VD15, VD17: BT313 (green); Zener diode VD10, VD14: 2CW10 (1.5 ~ 2.5V), can be replaced by 3 3DG emitter junctions in series; Transistor VT1: 9013, β = 70; VT2, VT4, VT5 : 9013, β ≥ 100; VT3, VT6, VT7: 9013, β = 100; VT8: 9012, β = 100; VT9: 9012, β ≥ 100; VT3, VT7, VT8 The penetration current of 3 tubes should be no more than 0.5μA; integrated circuit Al～A4: LM324; C9 capacitor leakage resistance with pointer type multimeter 1k block measurement should be no less than 1.5MΩ; T1 uses ordinary 36V±4V power transformer, transformer power is 20W, 40W, 60W, stable The load capacity of the pressure device is 110W, 220W, 330W respectively; 4 relays Kl ~ K4 use JZC-21F (T70) small relay, the contact current has 3A, 5A, 8A three specifications, according to the load of the regulator Select the corresponding specifications; T2 uses an ordinary 3W power transformer, the secondary voltage is 6.5 ~ 7V; other components are selected according to the parameters shown in the figure