billano786
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I need a suggestion from all experienced friends regarding following problem.
I have a power supply with two outputs (14.7V, 9V). I use 9V output to drive my circuit and 14.7V output to charge a 12V battery.
I case of mains failure, I want the circuit to be driven by 12V battery but if the battery voltage falls below 10.5V , I want the supply to be circuit to be cutoff till the battery is charged again or mains voltage resumes.
I tried to use relays for cutoff but face hysterisis problem.
Plz try to suggest a simple solution.
I refered to this link but discussion here is incomplete.
I have a power supply with two outputs (14.7V, 9V). I use 9V output to drive my circuit and 14.7V output to charge a 12V battery.
I case of mains failure, I want the circuit to be driven by 12V battery but if the battery voltage falls below 10.5V , I want the supply to be circuit to be cutoff till the battery is charged again or mains voltage resumes.
I tried to use relays for cutoff but face hysterisis problem.
Plz try to suggest a simple solution.
I refered to this link but discussion here is incomplete.