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Registered Member #1771
Joined: Tue Oct 21 2008, 01:23AM
Location:
Posts: 9
hi guys im planning to build a vttc and i have a gu5b tube the thing is i dont have a socket for it nor do i have a schematic i was wondering if anybody on this list has a socket for sale and also i was wondering if anybody has a schematic they could throw my way as a rough guide to component values and such thanks earl
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Here is the bi-lingual data sheet with characteristic curves for the Russian GU5B triode valve, from which the component values and cooling requirments can be readily derived:
The socket is one of those forced air types, so you'll save a lot of money, and probably do a better job, by making it yourself.
Registered Member #1403
Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968
Many VTTCs uses the same oscillator, a class C armstrong. You can see a example of my VTTC here, there is some good information and links to other VTTC related sites you should read.
Registered Member #1771
Joined: Tue Oct 21 2008, 01:23AM
Location:
Posts: 9
guys what is the max voltage the tube will take i have just upgraded to two mots in series and a doubler vasil has also done this but will the tube take the full 8kv from the doubler or must i stay within say 5-6kv imgetting longer sparks but i dont want to up the power too much for fear of damaging the tube
Registered Member #1771
Joined: Tue Oct 21 2008, 01:23AM
Location:
Posts: 9
according to vasil the tube will take a full 8kv thats real good news because i wasnt happy with my current spark length only 10 inches but that was with only 1 mot ive now upgraded to 2xmot in series with a doubler and the sparks are much longer at only half way up the variac only thing is im not sure my short secondary will allow me to use fulll power , it may strike the primary or the feedback coil im toying with the idea of putting the tickler inside the secondary has anybody tried this
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gu5b vttc
