Welder no-load power saver circuit diagarm 6

Published:2011/6/10 5:07:00 Author:Lucas | Keyword: Welder , no-load , power saver | From:SeekIC

The welder no-load power saver circuit is composed of the knife switch Q, fuse FU, capacitor C, resistors R1 and R2, thyristor VT, welding transformer T and the trigger switch S, and the circuit is shown as the chart. Q, FU, VT, and T form the main circuit of the welder, and S, R1, and VT form the power saving switching circuit; C and R2 form the current limiting circuit. Before the the trigger switch S being connected, VT is in the off state. R1 selects 1/2W metal film resistor; R2 uses 1OW cement resistor. C selects the CBB capacitor with the voltage being 400V. VT uses 30 ~ 50A, 600V directional triode thyristor. S uses the micro switch or small normally open button. The choices of FU and Q should be based on the actual power of T.



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