AIM:Somekid2390       ©2005

   Bauer HV

www.roffesoft.co.uk - "Tesla coils, meddling with forces I don't understand."

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Flyback Transformers

These are found in practically every CRT television or computer monitor. In most new flybacks, they have a built in HV rectifier diode. The older ones don't. People say the older ones work better than the newer ones because the newer ones are more complicated and are not made well for HV purposes like tesla coils or anything else like that. i dont really kno what im talking about....

my "collection" has gone up to 3 transformers....yay for me..

1) the transformer i am currently using for Tesla No. 2

2) New one i pulled from an old television. Definitely can handle much more power. Planning to test with my new flyback driver.

3) Numbers 1&2 and a small one i gots from a small B/W television.

 

You cant just solder 2 wires randomly onto the flyback and plug it into the wall...that's not how it works. You need to build a flyback driver for these. These are sometimes referred to as a a Solid State Tesla Coil, because it uses the same principles as a SSTC.


Flyback Drivers

I have seen many different drivers out there on the internet, but i have come to a final schematic that i really think is reliable and very efficient.

I am very happy about how this turned out. It's neat, it heats up only slightly even after long periods of shorting out, and it puts out an arc that stretches almost to about 3" with no problem. I plan to build a 1000watt variable power controller to control the power through the circuit. Then box everything.

I found this circuit here http://www.scopeboy.com/tesla/flyback.html  (it's the 2nd schematic from the bottom)

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1) My arrangement of the circuit for PCB

2) The working circuit built on a crappy breadboard. With a small PSU

3) The final PCB with a 12 volt drive and a 30 volt ~5 amp power supply

4) Top view. Power diode is on the middle heatsink

5) Side view showing the IRFP250 power mosfets arranged in a Half Bridge

6) Thin wire is for the drive part, and the thicker copper wire is for the power parts

7) The older circuit i used thanks to Jonathan Filippi (http://www.electronics-lab.com/projects/misc/016/)

 

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