Using 12VDC and a car coil to create an ignitor
Using 12VDC and a car coil to create an ignitor
(OP)
I am trying to put together a really simple ignition system for our indirect heaters that are in areas where no electricity is availible. The goal here is to use about a 7Ah 12DVC battery, a coil off a car, a push button and an ignitor rod. The problem I am running into is how to get the 12VDC to oscillate for the coil like an old points distributor does for a car. Anyhow I think that is the problem. I would really like to find a "black box" that does this i.e. wire the 12VDC to it with the push button interrupting the negative leg and from the "black box" continue the 12VDC to the coil. Then again I could be approaching this completely wrong. Any suggestions?
Darren
Darren
RE: Using 12VDC and a car coil to create an ignitor
You may also find what you need at an RV supply store. Many LP gas appliances use either manual or automatic pilot ignitors. The same may be true for most natural gas appliances used in homes.
RE: Using 12VDC and a car coil to create an ignitor
Use a switch that has a spring loading, i.e. when you push on the switch, path is closed but when you let off switch, it will return to normal open position.
Take the 12 volt positive terminal and wire to + side of coil, ground terminal should be ran to one side of switch. The other terminal of switch should be ran to - side of coil. Push switch momentarily (may have to hold for a second or two to charge coil) and releasing will fire coil via coil wire.
Hope this helps.
Tom
RE: Using 12VDC and a car coil to create an ignitor
RE: Using 12VDC and a car coil to create an ignitor
RE: Using 12VDC and a car coil to create an ignitor
RE: Using 12VDC and a car coil to create an ignitor
http://www.stewart-warner.com/combustion.html
http://www.kellyaerospace.com/janitrol.html
RE: Using 12VDC and a car coil to create an ignitor
NE-555 and build it up as a bistable switch. this unit will tolerate a surge of 1amp at 12Vdc and you only have to get two capasitors and two resistors in addition to the IC.
(If you use a precision potentiometers instead of the resistors you can adjust both hold time and cyclic duration
eg. how long the output is triggered and the total length of the wave)
You may find some info by searching on google.com
Link it up with a relay and use a standard coil.
(dont forget to protect the relay contacts with a capacitor)
(the back surge from a coil can become quite heavy).
the high woltage parts you may use from a car or other existing ignited engine.
If you don't find the info send me a note.
I have a little folder on the NE-555 IC somwhere in my garage.