Automatic refrigerator protector

Published:2011/8/26 3:20:00 Author:Jessie | Keyword: refrigerator, protector | From:SeekIC

The automatic refrigerator protection line is simple with full function, reliable sensitive action, and it is useful accessory for refrigerator. When the 220V mains voltage is too low, the refrigerator motor may be damaged, R1 and RP1 partial pressure value decreases, so VD5 is conduction, then the integrated circuit IC turns on, VD7 stops, so the two-way thyristor VS is cut off, thereby the power of refrigerators cut off. RP1 can be set to adjust the undervoltage protection value. When the voltage is too high, it is possible to make the refrigerator motor overheating. RP2 can be set to adjust over-voltage protection value.



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