Development of Three Phase Thyristor Trigger Circuit Based on AVR
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This paper gives an introduction of digital phase shift trigger circuit that can be applied to three phase thyristor trigger circuit or inverse circuit.The core of the circuit is AVR(Atmega16)single-chip microcomputer.Trigger pulses that it produces is high stable and reliable,and it don't need the simultaneous synchronous transformer.The paper makes a detailed description of working principle and key problems.The practice proves that the circuit is simple and stable.The anti-jamming ability is strong.