Dear,
I'm a very old member, and just came back now to ask for your help.
I have an electronic 48V 30A battery charger. This charger had problem with UC3842 2 times and we repaced it each time and got the charger working again.
This time we replaced it and can't find any other bad component, but the charger is not working. The supply voltage on the IC (between pin 7 and 5) is varying from approx 11.5VDC to 13VDC. I measured about 2V AC on there, which seems DC voltage is not filtered well, so I changef the electrolytic capacitors and still have the same problem.
I'm an electronics engineer and can undertand your help easily in order to fix it.
Regards,
Hazim
I'm a very old member, and just came back now to ask for your help.
I have an electronic 48V 30A battery charger. This charger had problem with UC3842 2 times and we repaced it each time and got the charger working again.
This time we replaced it and can't find any other bad component, but the charger is not working. The supply voltage on the IC (between pin 7 and 5) is varying from approx 11.5VDC to 13VDC. I measured about 2V AC on there, which seems DC voltage is not filtered well, so I changef the electrolytic capacitors and still have the same problem.
I'm an electronics engineer and can undertand your help easily in order to fix it.
Regards,
Hazim
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