Hi everyone,
I have a simple circuit with a 9V connecting to a switch (NC), to an electromagnet, and back. What I need is a way for an LED to light up when the switch is pressed.
I tried putting it in parallel, both with and without a resistor, but it wasn't receiving enough current to light up, the magnet took it all.
I'm worried that if I place the LED in series it will either get blown or it will limit the current to the magnet to the point where it can't pick anything up.
Oh, to throw another wrench in the mix it has to go in a cardboard tube, 2 inches cross and far enough up there that I can't get my hand or any tools up there, so if at all possible I'd like to do this without any transistors. I might have to resort to using one though.
Any ideas?
I have a simple circuit with a 9V connecting to a switch (NC), to an electromagnet, and back. What I need is a way for an LED to light up when the switch is pressed.
I tried putting it in parallel, both with and without a resistor, but it wasn't receiving enough current to light up, the magnet took it all.
I'm worried that if I place the LED in series it will either get blown or it will limit the current to the magnet to the point where it can't pick anything up.
Oh, to throw another wrench in the mix it has to go in a cardboard tube, 2 inches cross and far enough up there that I can't get my hand or any tools up there, so if at all possible I'd like to do this without any transistors. I might have to resort to using one though.
Any ideas?