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homage ups charging circuit diagram - Engineer Shamraiz
homage ups charging circuit diagram

homage ups charging circuit diagram

homage ups charging circuit diagram

 

homage ups charging circuit:

homage ups charging circuit includes uc3843 charging ic,n channel mosfet, bridge rectifier, and a chopper transformer. charging section fault in the inverter is very difficult to trace especially for fresh technicians.3843 ic is a PWM controller used in power supplies and chargers. charging section is working very accurately to avoid overcharging the battery. compensation, voltage feedback, and current sense are the more important functions of the PWM controller.

how do trace faults in the charging section?

in common faults, the charging MOSFET is burned with his base drive resistor in this case we replace mosfet, 100-ohm base resistance, and must replace charging ic uc 3843.in some cases, bridge rectifiers and some low ohm high wattage resistance also burned. the most difficult fault happens when the smd components like resistor and transistors are burned around the PWM controller uc 3843. In this situation, we have to trace all smd components around the charging ic and may need the same model for other ups boards to trace because some resistors are blackout and are not readable.in this pdf file, you can download the complete diagram of the charging section. the link is given below.

you may also read

homage ups power supply diagram

homage ups complete board diagram

homage ups control card diagram

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