So I got this Faraday bell, It’s quite cool
But it needs 24 VDC and 0.11 amps.
If I were to take 3x 9v batteries, would amps be a worry?
Just asking
When you connect 9V batteries in series, you increase the voltage (in this case, to 27 VDC) but keep your amperage the same. The average 9V battery puts out about 500 mAh (milliamp hours; in other words how many milliamps can it put out in an hour before wearing out). With that bell, you can run it off of three 9V batteries for about four and a half hours.
To wire it, all you’d need to do is touch one of the red wires to the positive contact of the battery, and the black wire to the negative contact.
The reason why there are two sets of red wires and two sets of black wires is for continuity. When the bell circuit is wired to a real system, one of the red wires will be the positive from the previous device, and the other will go to the positive of the next device, and the same for the negative wires. That way if the bell is removed, it breaks the circuit and puts the panel into trouble. For what you’re doing though, you can ignore the other set of wires.
Hope this helps!
I agree, that is quite a cool device. Not sure about the amps though.
When you are wiring the bell, put tape or wire nuts on the unused red and black wires and don’t let them touch each other. That would make a direct short to the battery.
Yep, that’s all true although I wouldn’t worry about the amperage too much at least with that device.