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Registered Member #146
Joined: Sun Feb 12 2006, 04:21AM
Location: Austin Tx
Posts: 1055
Just FYI, i used the the taylor tubes from RF parts. They seemed to work just fine for me. I "accidentally" bought a matched pair, but when i called and specified that i only wanted 2 individual non-matched tubes, they refunded me the extra cost (and its true, i didnt want matched). I think for TC use, as long as both tubes are "good", they will be close enough to work fine. With my 833A coil, one of the tubes was severly low in emmissions, so the other tube was doing almost all of the work. If i used just 1 tube at a time, the good tube would throw a 20" spark, but the bad one only 10" . I dont think you will have that kind of problem though!
Registered Member #105
Joined: Thu Feb 09 2006, 08:54PM
Location:
Posts: 408
Alright, slight troubles, the MOT died on me- nothing else seemed hot, and I have no idea what the priblems are. I have a 8kv .005uf RF bypass capacitor on the transformer, and one on the filaments of the tube, too. Whats the problem??
Edit: just saw that the Bypass capacitor may have been a cold solder joint and may have fallen off- bet this was the cause, as the transformer was barely warm when it happened, the insulation had just burnt off and melted some tape.
Registered Member #105
Joined: Thu Feb 09 2006, 08:54PM
Location:
Posts: 408
The new tube has arrived today, and right now I am in the process of burning them in- heating the filaments for a while- suggested by christopher to reduce any traces of air in the tube. "Second Light" soon to come!
EDIT: Looks good, about 4 inch sparks first light, and then when the feedback coil was moved up on the form, they grew to about 5 inches. I could have pushed it further up, however the wires right at the base of the vaccum in the tube sparked a couple times a second. Would anything simple help prevent this so i can move the feedback coil higher?
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Starting a new (first) VTTC First light!
. I dont think you will have that kind of problem though!
