Hi,
I have a problem with an emergency light( that we use during power cut). The battery used is a sealed lead acid rechargeable battery with a stand by voltage regulation of 6.75V - 6.90V. The problem is that the tube does not glow when it is ON (or discharging mode).
When charging, the multimeter voltage reading on the battery terminals show around 6.7V-6.8V , so i guess the recharging circuit works. When i put it ON, the voltage on the battery terminals read around 5.4V-5.53V only. So is it a problem with the battery??
I've measured the voltage across the caps in the circuit and they read 50% of the cap voltage rating(fine i think). Only the drop across the wires connected to the tube shows 0V.
I suspect the battery but i don't know if i missed anything while checking the circuit. I've included the images(pardon the quality).
I dont know what could be the problem, might have to take it to a repair shop. But how do we generally find fault in a circuit ? do we check diodes/connectivity for each wire apart from checking caps?
Thanks.
I have a problem with an emergency light( that we use during power cut). The battery used is a sealed lead acid rechargeable battery with a stand by voltage regulation of 6.75V - 6.90V. The problem is that the tube does not glow when it is ON (or discharging mode).
When charging, the multimeter voltage reading on the battery terminals show around 6.7V-6.8V , so i guess the recharging circuit works. When i put it ON, the voltage on the battery terminals read around 5.4V-5.53V only. So is it a problem with the battery??
I've measured the voltage across the caps in the circuit and they read 50% of the cap voltage rating(fine i think). Only the drop across the wires connected to the tube shows 0V.
I suspect the battery but i don't know if i missed anything while checking the circuit. I've included the images(pardon the quality).
I dont know what could be the problem, might have to take it to a repair shop. But how do we generally find fault in a circuit ? do we check diodes/connectivity for each wire apart from checking caps?
Thanks.
Attachments
-
764.2 KB Views: 17