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Registered Member #3610
Joined: Thu Jan 13 2011, 03:29AM
Location: Seattle, WA
Posts: 506
Experimentonomen wrote ...
The sound at the end was steam returning to the coolant tank, pressurizing it and blowing out the vents.
I'm yet to find a cheap crucible that will withstand 1500deg C.
Heres a new video after a few changes:
Pick up some refractory cement and make one. I don't know if it's called the same thing where you are, but here they sell it at hardware stores for repairing fireplaces and stuff. I saw some that said it could withstand 1750C.
Registered Member #190
Joined: Fri Feb 17 2006, 12:00AM
Location:
Posts: 1567
Go to Home Depot and buy furnace cement. It can withstand boiling metal. The problem is if you let the metal boil for too long you will melt the silica in the cement and get a metallic-glass mixture. However, for slightly lower temperatures, it is a good, cheap solution.
Registered Member #3637
Joined: Fri Jan 21 2011, 11:07PM
Location: Buffalo, NY
Posts: 1068
Experimentonomen wrote ...
Update:
Whats your schematic? You said you used Imsosmooth's PLL one right? Could you possibly elaborate on what you mean by RC passive network? Or draw up a schematic? Thanks ^^
Registered Member #941
Joined: Sun Aug 05 2007, 10:09AM
Location: in a swedish junk pile
Posts: 497
Imsmooth, only one problem, i don't like in USA so i don't have home depot here, my best bet is a cheap used silica clay crucible on ebay.
Inducktion: imsmooth used a integrator circuit between the phase comparator part ad the VCO input of the CD4046 pll if, i use just a resistor and a capacitor.
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Induction Heater testing
