Is the "remote bell" going to be connected by wires? What kind of a signal do you want to send?I wish to provide a signal to a remote bell (which works on 3v ) when the 12v falls to 0v.
So you want this circuit to provide a button press on the remote? How long do you need the button pressed? Do you have access to the switch contacts?The output goes to a remote rf trigger which works on a CR2032.
Yes please ! I havent exactly timed it but i would estimate about 200ms should do it as a very fast press and release triggers the bell. And i do have access to the switch contacts.So you want this circuit to provide a button press on the remote? How long do you need the button pressed? Do you have access to the switch contacts?
2N3905 + 4N35I have a constant 12v signal which on a brief interruption rings a bell. I wish to provide a signal to a remote bell (which works on 3v ) when the 12v falls to 0v. Please can you suggest a suitable way ? The currents involved are negligible .
How complicated do you want this circuit to be? Is the 12 volts just on an open wire and then disconnected. Or is it powering something and then a switch is switched off and it drops to zero. How much current is flowing in that 12 volt circuit until the voltage drops to nothing? For some circuits running 12 volts DC I could do it with a diode and a capacitor, but your application may be different.I have a constant 12v signal which on a brief interruption rings a bell. I wish to provide a signal to a remote bell (which works on 3v ) when the 12v falls to 0v. Please can you suggest a suitable way ? The currents involved are negligible .
by Jake Hertz
by Jake Hertz
by Duane Benson
by Aaron Carman