I am trying to build a 5V power supply with battery back up for one of my projects that involves TTL ICs. I need help in the battery change over part due to the following reasons:
1. The battery that i have is a 6V (5Ahr) rechargable lead acid cell (i cannot directly supply it to the ICs since Vccmax=5.25V)
2. I need a glitch free change over circuit.
3. I am not sure about the current that should be provided for trickle charging the battery.
pls post ur valuable suggestions.
1. The battery that i have is a 6V (5Ahr) rechargable lead acid cell (i cannot directly supply it to the ICs since Vccmax=5.25V)
2. I need a glitch free change over circuit.
3. I am not sure about the current that should be provided for trickle charging the battery.
pls post ur valuable suggestions.