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Registered Member #941
Joined: Sun Aug 05 2007, 10:09AM
Location: in a swedish junk pile
Posts: 497
Yesterday my 304TL arrived, and after a test i confirmed that it survived shipping so i started building up a prototype on a piece of chipboard, and sheet copper for everything conductive to reduce stray inductance.
I´ll take some pics later when i have bought new batteries to the camera.
Registered Member #89
Joined: Thu Feb 09 2006, 02:40PM
Location: Zadar, Croatia
Posts: 3145
Hey, congrats man. What circuit are you using? I see you have that fat air-cored coil on it.
Regarding copper sheet conductors, it may be an overkill for the tube connections since current is low there, but looks nice and helps to dissipate heat ;)
Can you give us some higher-resolution pics? And schematic of course?
Tubes are nice for induction heaters because they can happily operate well in MHz range, and if your caps are good enough you can heat even 'stubborn' metals like aluminium and brass.
Registered Member #941
Joined: Sun Aug 05 2007, 10:09AM
Location: in a swedish junk pile
Posts: 497
I did that to reduce stray inductance, whick u get with the thin round wire that would be enuf to cary this current.
<-- i use that schemo, but the MOT feeds direct AC, and work coil is not 1.4" tubing and fb coil is 28 gauge wire, about 30 turns on a shithouse spool.
The dc block and tank cap are four 680pF russian doorknobs in parallel each.
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Induction heater whith tubes
