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The following is the circuit diagram of [KC04 Pin Diagram and Application Circuit]. The KC04 circuit is widely used in single-phase and three-phase full-controlled bridge power supply systems, particularly for bidirectional pulse phase shift triggering of thyristors. This device generates two-phase-shifted pulses with a 180° phase difference, making it ideal for constructing full-controlled bridge flip-flop circuits.
The KC04 offers several key features: high output load capacity, excellent phase shifting performance, balanced positive and negative half-cycle pulse phases, a wide phase shift range, low requirements for the synchronization voltage, and the ability to modulate pulse trains.
Key electrical parameters include:
- **Power Supply Voltage**: DC 15V (allowing ±5% fluctuation)
- **Power Supply Current**: Positive current ≤ 15mA, Negative current ≤ 10mA
- **Synchronous Voltage**: Typically 30V AC
- **Maximum Synchronous Input Current**: 3mA (RMS)
- **Phase Shift Range**: ≥170° (with 30V AC synchronous voltage and 15–30kΩ resistance)
- **Sawtooth Amplitude**: ≥10V (based on the flat top of the sawtooth wave)
- **Output Pulse**:
- **Pulse Width**: 10μs to 2ms (adjustable by changing the capacitance)
- **Pulse Amplitude**: >13V
- **Maximum Output Capacity**: 100mA (pulse current)
- **Output Back Pressure**: BVceo ≥ 18V (test condition: Ie ≤ 100μA)
- **Positive/Negative Half-Cycle Phase Unbalance**: ≤ ±3°
- **Operating Temperature Range**: -10°C to 70°C
KC04 Pin Diagram

Typical Application Circuit of KC04

KC04 Waveform Diagram at Each Point
The KC04 chip consists of multiple internal circuits, including a synchronization detection circuit, a sawtooth wave generation circuit, a phase shift voltage circuit, an offset voltage circuit, a comparator amplifier circuit that integrates the sawtooth voltage, and a power amplifier circuit.

(Editor: Circuit Diagram)
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