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Topic: A new design of transformer for Tesla Coils(Read 16579 times)


« Reply #5 on: November 17, 2009, 07:15:32 AM »
Jeff
Are the Sangamo caps also salvaged from old microwave ovens? I didn't know microwave oven caps could stand up to use in a TC.
The tranny and coil are a great design. Thanks for sharing
Jim
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dsurfr

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« Reply #6 on: February 25, 2010, 08:55:22 AM »
Jeff: Is that an Xray machine, sans tube, in the background of the last picture?  Looks like a diathermy there, too. Tongue

I will be getting an old Coolidge tube from a sale on eBay--don't really need it if you want one.

I am thinking of just using 2-3 microwave transformers in oil, parallel the primaries/seriesing the secondaries.  So far I have two.

 Amazing--I've dug 4 microwaves  out of dumpsters; one worked fine, one only needed a switch readjusted.  I made about $45 selling those--no parts needed!  Two needed new microprocessor timers/controllers, so I scrapped them, and the  Hi Voltage parts were fine.  I even had a couple spare caps for a recalcitrant Microwave of a friends'!
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tintin

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« Reply #7 on: February 25, 2010, 03:54:48 PM »
Those are two special machines!
The short wave diathermy is neat - giant tubes inside (ca. a foot tall), massive copper tubing coils, - but more important - was the personal machine of HG Fischer's son Warren Fischer. 

The Interrupterless X-Ray machine was from the 1930s Fischer archive of floor model machines used in trade exhibitions.  It is 3kW(!!!) - and puts out a flame that makes a pole pig look like a mouse.  It scares me to no end.  Inside is a huge synchronous rotary rectifier.  All wires are insulated in gigantic hard rubber sleeves.
http://www.electrotherapymuseum.com/FischerImaging/Interrupterless/index.htm
http://www.electrotherapymuseum.com/2007/MovingTheInterrupterless/index.htm 

Here is a short video of it on high power:
http://www.electrotherapymuseum.com/FischerImaging/Type2Movies/HighFilm.wmv

It frightens me.  Coolidge tubes from the 20s are great finds if its that early.  There are videos you can find online of Coolidge taking about his invention .   Priceless to see and hear a real pioneer.  Too bad we can't find any of Tesla!
Last Edit: February 25, 2010, 03:57:41 PM
By JeffBehary
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JeffBehary

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