The KC04 circuit is suitable for single-phase and three-phase full-control bridge power supply devices, and is used for two-way pulse phase shift triggering of thyristor. The KC04 device is a phase-shift pulse with two phase difference l80 output by the thyristor phase shifting trigger, which can conveniently constitute a full-control bridge flip-flop circuit. The circuit has the functions of output load capacity, phase shifting performance, good positive and negative half cycle pulse phase balance, wide phase shift range, low requirement for synchronous voltage, and pulse train modulation output. The electrical parameters are as follows: Power supply voltage: DC 15V, a l5V, allowing ±5% fluctuation (±100,6 function is normal). Power supply current: positive current ≤ 15mA, negative current ≤ 10mA. Synchronous voltage: any value (typically 30V AC). The synchronous input allows maximum synchronous current: 3mA (rms). Phase shift range: ≥l70° (synchronous voltage 30V, synchronous input resistance 15~30kΩ). Sawtooth amplitude: ≥10V (the amplitude is based on the flat top of the sawtooth wave). Output pulse: fl. Pulse width: l0μs ~ 2 ms (change the pulse width capacitance to reach). b. Pulse amplitude: >13V. C. Maximum output capacity: l00mA (out of pulse current). d. Output back pressure: BVceo ≥ l8V (test condition: Ie ≤ l00μA). Positive and negative half cycle pulse phase unbalance ≤ ± 3 °. 'Use ambient temperature: -l0 ~ 70 °C.
KC04 pin diagram
Typical application circuit of KC04
KC04 waveform diagram of each point The chip consists of synchronous detection circuit, sawtooth wave forming circuit, phase shift voltage, offset voltage and sawtooth voltage integrated comparison amplifier circuit and power amplifier circuit.
(Editor: Circuit Diagram)Signal relay is a common device in the automatic control system. It is generally used to connect and disconnect the circuit, issue control commands and reflect the status of the equipment by dropping the card, and remove the signal by returning the signal card after the equipment restores to normal. It is an important part of the automatic control and remote control circuit.
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