DZW75-48/50(50II) type power factor compensation

Published:2011/12/5 1:13:00 Author:May | Keyword: power factor compensation | From:SeekIC

The elementary diagram of DZW75-48/5050II power factor compensation: DZW75-48/5050II power factor compensation circuit: In the diagram, (a) is compensation circuit, (b) is auxiliary power supply. It mainly consists of N1, power factor calibration control module and some support circuits. The internal part of N1 consists of saw-tooth wave generator, pulse width modulator and multiple comparator circuit and so on. The frequency of saw-tooth wave generator is determined by out-connected capacitor and resistor. This machine make the frequency of its output pulse work at 50 kHz, and the width of output pulse is determined by the error voltage after a general comparison treatment. It has three sampling and comparison circuits. In fact, V6 is integrated chip consisting VMOS tube, promotion diode and rectifier bridge.



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