SOLDERING IRON USING GLOW PLUG

**mariost** · Apr 1, 2019, 08:22 PM

A useful tool we can use in a place where there isn' t electric current. For example in the car , at the country etc. It needs a 12 volt battery. It works with about 20 A current , so I 've put a 30 A relay that gets the order from a small switch. The power of the glow plug is about 230 to 250 W so we must not operate continuously more than 8-10 sec to avoid overheating. I ' ve also connected a piece of copper (or bronze) to the end of the plug to have better adhesion with the soldering wire.
YOU CAN WATCH THE VIDEO OF THE CONSTRUCTION HERE.

**mariost** · Apr 2, 2019, 04:32 AM

A mistake in the shematic. The + of the battery goes direct to the resistor before the switch. The connection in the shematic is before the switch and not after it. In fact the construction is ok. I made this mistake later in the shematic.

**tonyfoale** · Apr 3, 2019, 05:02 PM

I like it, great idea. The temperature could get to be excessive for soldering but that could easily be controlled by the supply voltage to give a longer duty cycle.
I have several glow plugs in a scrap box, I know what to use one for now. Thanks.