Hi all. *newbie* (sorry)
I've had an idea in my head for a little while now, and figure it's about time I did something about it.
Basically, I want to create a circuit that will light up a secondary led/bulb when the primary bulb fails - (as an alert to the fact the main one has gone)
when I was younger, I remember having a project kit, and one circuit in the kit did a similar job to this - it sounded a buzzer when the two bits of tine foil closing the circuit are seperated (very basic alarm - used it to stop my brother going in my room!) any way, I think it was called a collapsing circuit, and I reckon this is what I need.
Is there anywhere you could point me to to get info on doing this?
many thanks,
David
I've had an idea in my head for a little while now, and figure it's about time I did something about it.
Basically, I want to create a circuit that will light up a secondary led/bulb when the primary bulb fails - (as an alert to the fact the main one has gone)
when I was younger, I remember having a project kit, and one circuit in the kit did a similar job to this - it sounded a buzzer when the two bits of tine foil closing the circuit are seperated (very basic alarm - used it to stop my brother going in my room!) any way, I think it was called a collapsing circuit, and I reckon this is what I need.
Is there anywhere you could point me to to get info on doing this?
many thanks,
David