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| eddy heater |
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| AdeV:
--- Quote from: PTsideshow on September 20, 2011, 10:36:28 AM --- A device on the back of the unit some type of breaker --- End quote --- Aha, I think I've just spotted what makes it work... :lol: |
| PTsideshow:
my feelings exactly when I was give it originally! :thumbup: |
| Baldrocker:
--- Quote --- this sounds good in my head and it has always been a problem for me to write it down the same way as it is in there. --- End quote --- At last, at last! Someone else with my complaint :doh: br |
| picclock:
Just my 2 cents :-) The heating is caused by the resistance of the metal in which the induced current is produced, so good electrical conductors heat less for a given current. The frequency of operation and the gap distance (air gap between magnet and metal) control the coupling of the components, and the amount of energy transferred (current induced). At low frequency's (100's of Hz) the gap must be very small, thousands of an inch. At high frequency's (1Mhz upward) the gap is still important but it can be much larger. Also at high frequency's the current travels mainly in the skin of the metal, making the resistance higher and improving the surface heating. Even to heat a small piece of steel this way requires very large currents to flow. Good luck with your experiments - I'd be interested in seeing any results you get. Best Regards picclock |
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