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Silicon controlled voltage regulator

2015-01-29 09:50      Click:

Silicon controlled rectifier Voltage regulator and current output type instrument and KP - 200 or less for 600 a, a three-phase thyristor cooperate, can be adjusted as a single phase or three phase voltage power and thus the resistance furnace (or) induction heating furnace temperature automatic control.Food phase-shifting trigger mode to the SCR, changing load on each of the output waveform effect value, can slow the pressure regulating manner continuously heating power, due to the depth of voltage negative feedback, good linear adjustment, power grid volatility of a minimum.Can use ordinary electric meter for load current voltage detection.

Silicon controlled voltage regulator features:

Force ksetra-ksetrajna silicon controlled voltage regulator using thyristor as control element, has small volume, no noise, circuit is simple, reliable, easy to use security, loading ability and the adjusting range is wide, can be widely used in all sorts of lamps and lanterns that move light, electric appliances air-conditioning and single-phase motor drive, etc.


Figure 1 for SCR The principle of voltage regulator Figure.Just on 220 v mains, bidirectional thyristor SCR control no voltage on the G, SCR in the blocking state (not conducting).Mains voltage load, W, RI to recharge, C2 when C2 on both ends of the voltage rise to greater than the bidirectional trigger diode ST blocking voltage value, the ST conduction, so that the SCR trigger conduction, the mains directly add to the load.


Figure of W, R1, C2 phase shift network of R2 is current limit protection resistance.SCR trigger Angle by charging time constant of C2 W, R1, C2 decision, change the value W, can change the SCR trigger Angle, thereby change the electric current flows through the load, so the load on both ends of the voltage varies with the change of the W value.Cl, L anti-interference circuit, which can effectively inhibit radio frequency interference within 5 KHZ.


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