I am seeking battery backup for modem (DSL & cable) for 12VDC 3Amp.
Is there readily available consumer grade 12VDC battery systems so that we can power our modem and recharge our cell phones/tablets when power goes our?
Otherwise, what is the circuit available to regulate & current limiting...
This circuit have 5 Nickel Metal Hydride batteries in series to power LED lights.
To recharge, the 5 serially connected batteries is connect to a +12VDC 5A wall plug adapter power supply.
This circuit works for a little while in the beginning. Then, It stop working. Can you please tell me why...
I have a 5x NiMH AA battery in series to power a bunch of LED.
The open & close circuit switch is a reed relay.
I want to measure the current flow value when the relay is open and close.
How best to draw the discharge rate chart after the relay is closed?
I assume the current is very low when...
