SOLDERING IRON USING GLOW PLUG

[mariost]

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.
A MISTAKE in 12.40 in the shematic. The + of the battery goes direct to the resistor before the switch. (In the image is correct).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.
YOU CAN SEE THE CONSTRUCTION AND THE USE HERE: