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Registered Member #2063
Joined: Sat Apr 04 2009, 03:16PM
Location: Toronto
Posts: 352
Just found a brand new thyratron at the local junk store, its a 3CA3A made by Sylvania datasheet here
in the experiment i did last night, I used a lithium ion cell to power the filiment and the source of HV, I used a ZVS driven flyback with 48v input.
at first with the filiment on and HV on, nothing interesting seems to happen much but when power to the filiment was removed, the thyratron tube started to arc internally ,sparks were produced and the plate was glowing red hot. So did I just fried my thratron tube?
The blue glow in the tube look very cool, but is the plate suppose to glow red hot during normal operation? Also, I've read from somewhere that thyratron tubes can be used to generate X-rays, but will a flyback transformer even kick out enough voltage to do that?
Ah, not too much of a loss then if it is just a thermionic diode.
Xray output depends on the HV current, the spacing between anode and cathode, and the thickness of the glass. You can give it a try, keep the HV under 70kV and you can use lead roofing sheets for shielding pretty effectively.
If you are unexperienced in radiation management and safety do not attempt radiography. Xray burns are a major hazard in soft xray radiography and are exceptionally gruesome/painful, not to mention you majorly up your cancer risk.
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Thyratron questions
