hi all,
i am new to this forum. well the purpose of starting the thread is to see if someone might help me on my 12v automatic battery charger. i have constructed the circuit as it is in the circuit diagram given but the problem is that ti is meant to supply 5amps of current at 14v(charging voltage) from a 15v transformer. but it is not supplying the current rated.it is only supplying 0.7A but it should provide 4-5amps ( i connected ammeter in series with the positive terminal of the charger). i want to know what the problem might be?
also the circuit designer says that the curoff situation will build around 12.7v as the zener diode conducts and the transistor tp122 prohibits the working of charging transistor. but in my opinion zener diode should be of 13v and the cutoff situation should build around 13.7v (max 13.8 volts for max battery charge). i have posted the questions to the author but so far no responce which is very disappointing.
and another last thing i want to ask is that i am actually trying to build a UPS and use this charger for charging my 200Ah battery. can this circuit be able to provide charging over a continuous period of time?
hope i might get help from experts here. thanks in advance
the original link for the charger is here
i am new to this forum. well the purpose of starting the thread is to see if someone might help me on my 12v automatic battery charger. i have constructed the circuit as it is in the circuit diagram given but the problem is that ti is meant to supply 5amps of current at 14v(charging voltage) from a 15v transformer. but it is not supplying the current rated.it is only supplying 0.7A but it should provide 4-5amps ( i connected ammeter in series with the positive terminal of the charger). i want to know what the problem might be?
also the circuit designer says that the curoff situation will build around 12.7v as the zener diode conducts and the transistor tp122 prohibits the working of charging transistor. but in my opinion zener diode should be of 13v and the cutoff situation should build around 13.7v (max 13.8 volts for max battery charge). i have posted the questions to the author but so far no responce which is very disappointing.
and another last thing i want to ask is that i am actually trying to build a UPS and use this charger for charging my 200Ah battery. can this circuit be able to provide charging over a continuous period of time?
hope i might get help from experts here. thanks in advance
the original link for the charger is here
Attachments
-
26.8 KB Views: 1,748