The thyristor ac voltage regulation circuit diagram

Published:2014/4/1 21:19:00 Author:lynne | Keyword: The thyristor ac voltage regulation circuit diagram | From:SeekIC

In order to stabilize the circuit diagram lamp brightness L, using thyristor AC automatic voltage regulator is the way, for access thyristor T5 on a diagonal line from the bridge of exchanges. Their trigger pulse generated by a single-junction transistor VT4. Transistor VT1 . VT2 and VT3 phototransistor play the role of the equivalent resistance when the lamp light due to supply voltage change, the change in resistance phototransistor, single-junction transistor control voltage phase also changed, so that the trigger pulse phase thyristor move, increase or decrease the thyristor time, the voltage on the approximation of L remains unchanged. brightness of the projector lamp is also approximately unchanged. makes light stability. The AC thyristor regulator circuit diagram shown in Fig.



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