100W VMOS FET inverter power supply circuit diagram

Published:2011/7/1 1:27:00 Author:Ecco | Keyword: 100W , VMOS, FET , inverter | From:SeekIC

Working principle is shown in Figure 1 (click to download the schematic). VT1 and VT2 constitute a multivibrator oscillator with the oscillation frequency in 5Hz. When the voltage drops, the oscillator is provided by the regulator VD1 to keep the same frequency. Multivibrator outputs square wave voltage to drive VMOS high-power tube directly, then the 220V AC is led from the outlet CZ after boosted by step-up transformer. Relay J1 is used for automatical convertion in charging and inverter. LED1 indicates the end of the charging, LED2 is discharged instruction.



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