Welder no-load power saver circuit diagarm 1

Published:2011/6/10 5:52:00 Author:Lucas | Keyword: Welder, no-load , power saver | From:SeekIC

The welder no-load power saver circuit is composed of the relay drive circuit, low-voltage detection control circuit, high voltage time control circuit or voltage adaptive tracking regulation circuit, and the circuit is shown as the chart. The voltage adaptive tracking regulation circuit is composed of the voltage-regulator diode VS3, resistor R3 and transistors V3, V4. Relay driver circuit is composed of the relay K, transistors V1, V2 and diode VD3 and other components. KM is the AC contact, and C is the buck capacitor, K1 is the Κ normally open contact of the relay K, VD1 is the rectifier diode, C1 is the filter capacitor. R1 ~ R12 select 1W metal film resistors. C chooses non-polar condenser with the withstang voltage being 630V; C1 selects the aluminium electrolytic capacitor with the voltage being 250V.



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