Hello,
I'm looking for a bit of guidance with building a circuit to quickly switch on/off a small heating element that will be used to repeatedly light fuses.
The heating element will be a small glow plug typically used for nitro RC engines and I'd like to keep the overall package as small as possible. I'm able to get the element red hot almost instantly with a single CR123 battery and this is satisfactory.
For the switch I would like to use a small detect switch like Radio Shack 275-0008 1mA 5VDC. The reason for the small switch size is that I want to position the lever so that it protrudes into a small tube (slightly larger than the fuse) so that as the fuse passes down the tube, the fuse will trigger the switch and activate the heating element. The element would then switch off when the fuse is removed from the tube. The switch is not robust enough to carry the current on its own and I believe I need a FET of some sort that can be triggered by the switch to carry the load.
My overall knowledge of electronics and circuit design is very shallow so if someone could provide a schematic and/or parts list it would be greatly appreciated. I'm open to varying the power source from the CR123's I mentioned earlier so long as the package can stay compact.
Thanks in advance!
- Brian
I'm looking for a bit of guidance with building a circuit to quickly switch on/off a small heating element that will be used to repeatedly light fuses.
The heating element will be a small glow plug typically used for nitro RC engines and I'd like to keep the overall package as small as possible. I'm able to get the element red hot almost instantly with a single CR123 battery and this is satisfactory.
For the switch I would like to use a small detect switch like Radio Shack 275-0008 1mA 5VDC. The reason for the small switch size is that I want to position the lever so that it protrudes into a small tube (slightly larger than the fuse) so that as the fuse passes down the tube, the fuse will trigger the switch and activate the heating element. The element would then switch off when the fuse is removed from the tube. The switch is not robust enough to carry the current on its own and I believe I need a FET of some sort that can be triggered by the switch to carry the load.
My overall knowledge of electronics and circuit design is very shallow so if someone could provide a schematic and/or parts list it would be greatly appreciated. I'm open to varying the power source from the CR123's I mentioned earlier so long as the package can stay compact.
Thanks in advance!
- Brian