KGCZ01 single-phase universal AC (closed-loop) rectifier trigger board can be used for single-phase full-bridge rectifier, half-bridge rectifier, single-phase full-wave rectifier and other circuit structures of thyristor trigger control. The trigger board contains power transformer, synchronous signal detection, sawtooth wave forming circuit, closed-loop PI regulator and pulse transformer output unit. According to actual needs, it can be constructed into a single-phase controllable silicon rectifier system with constant voltage or constant current output function. The output of this trigger board can be manually adjusted and can also be controlled by standard signals.
This manual introduces the KGCZ01 single‑phase phase‑shift closed‑loop rectifier trigger board, describing its purpose, main components, and typical applications such as full‑bridge, half‑bridge and full‑wave rectification. It outlines the technical parameters, working principle, and the integrated TCA785 phase‑shift trigger IC.
Detailed sections cover terminal definitions, wiring diagrams for constant‑voltage and constant‑current modes, control‑mode selection using switches K1‑K3, manual and automatic control procedures, calibration steps, and safety precautions. The document is intended for engineers who install, configure, and maintain the trigger board in power‑electronics systems. This manual is written in Chinese.
| Rated working voltage | 220V/380V AC 50Hz |
|---|---|
| Input signal voltage | 220V/380V AC <50mA |
| Trigger pulse width | 600 µs |
| Phase‑shift range | 0‑170° |
| Manual control voltage input | 0‑10 VDC |
| Manual control potentiometer | 10 kΩ |
| Standard voltage signal input | 1‑5 VDC |
| Standard current signal input | 4‑20 mA |
| Feedback DC voltage | <10 VDC |
| Feedback DC current | ≤75 mV |
| Operating temperature | -10 °C to +45 °C |
| Operating humidity | ≤80 %RH |
| Dimensions | 135 mm × 105 mm × 36 mm |
Connect the circuit as described in Wiring Instruction 1, set the manual control voltage input (P) to 10 VDC with the potentiometer, then adjust the feedback resistor RF until the output voltage reaches its maximum value.
Set switch K1 to the desired control mode (SD for manual, ZD for automatic), then position switch K3 to UF for constant‑voltage or CF for constant‑current operation.