msmax
Full Member level 1
mains failure alarm
What is the most simple circuit for the next:
I have a charger which can supply max. 14V and a 12V battery.
As soon as the mains is gone a lamp and a buzzer should be activated fed from the battery.
The buzzer should be silencable by a pushbutton.
Any good idea's without too much trouble?
Is it possible only using relays?
What is the most simple circuit for the next:
I have a charger which can supply max. 14V and a 12V battery.
As soon as the mains is gone a lamp and a buzzer should be activated fed from the battery.
The buzzer should be silencable by a pushbutton.
Any good idea's without too much trouble?
Is it possible only using relays?