Hi all,
I’m looking to purchase an inductive heater similar to this 20a ZVS Induction Heating Board Flyback Driver Heater DIY Cooker Ignition Coil for sale online | eBay so I can heat up rusted bolts.
The big issues/cost is the power supply. I’m thinking I can use a 12V car jumper, at least temporarily.
What are some other ideas to drive this heater?
Thanks!
As long as your duty cycle is relatively low, 20% on 80% off, one of these works great.
That was easy. 
I have one of these and even an old school laptop supply can run these intermittently. But the closed frame supplies like @frank_lima points out are ideal, 1.5X-2X sized for longevity.
Golf Cart battery charger is in the high end of what you are looking for
There are lots of generic switch mode power supplies out there in that range for relatively inexpensive. Like this one.
A hobby lithium polymer battery would do it too. A 6S pack would be the right voltage and could easily handle the current.
OK, how about this beast! If this is a Makerspace project then the power supply is yours for FREE. I’ll have it at the Electronics Lab on this Wednesday evening and we can check it out. Looks like an adjustable 0 to 40 VDC output and up to 20 Amps.
Doesnt tanners have a couple of these in the Power supply aisle?
Ooohh my… that would work wonderfully w/ our battery charger/wrkstn.
http://www.revolectrix.com/PL8T_specs_tab.htm
Guessing pwr lugs/bolts are in the back.
Got a model no. for that beast?
They also make an 1800w version:
Anybody knows if I can run wires to the coil, solder them and use it remotely? I’m thinking it’s possible but I don’t want the whole thing to catch fire either.
You have more current there than you realize. These are bouncing energy between the capacitor bank and the coil. More wire adds more resistive loss and may reduce efficiency far more than you expect.
Understood. I’m using this to loosen rusted bolts. So if I can get a 5 foot extension that would make my life a lot easier. Any thoughts?
Maybe 4 gauge welding cable? I can’t predict with any certainty if that will work or not. Sometimes experimental results are the only way to know.
