Fully automatic AC voltage regulator - power circuit - circuit diagram - Huaqiang Electronic Network

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

MOS power IC full range

Industrial Router Crystal 3.2*2.5mm 3225 26M (26.000MHZ) 12PF 10PPM 20PPM 30PPM

Photocoupler

The fully automatic AC voltage regulator shown in the image can automatically and effectively control the main voltage Ui ranging from 160 to 270V within 220±10%V.

This regulator is designed to handle loads up to 100W, making it suitable for most household appliances. Relays K1 to K4 and transformer T are selected based on this load capacity. K1 through K4 use 4098 (DC9V) relays. The core of T is made of high-quality silicon steel sheets (GEIB30-D310-0.35B), with a stack thickness of 30mm, ST=9cm², and Po≈100W. The turns-to-voltage ratio Tr=5 turns/V. N1, N2, and N3 are wound using Φ0.57mm (23#) high-strength enamel wire, totaling 129 turns, 283 turns, and 99 turns respectively; N4 and N5 are wound using 1004 turns and 50 turns of Φ0.36mm (27#) high-strength enamel wire. RP1 to RP4 are selected as WHW-1 type synthetic membrane fine-tuning resistors. VD5 is a 2EF102 (all-plastic, Φ5mm, red) LED. VD6 uses 2CW342 or 1N59958. PV selects an 85L1-V300V type finished voltmeter. Other components are labeled as shown in the diagram.