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Registered Member #1537
Joined: Thu Jun 12 2008, 06:44PM
Location:
Posts: 51
hi there i am looking to make a villard cascade (or other voltage booster) powered by the output of a ccfl inverter (out of a scanner or the like). will this work ie will the ac output of the inverter (i think it is ac) work with the cascade or will i need a dc rectifier? tghanks for the help
Registered Member #1537
Joined: Thu Jun 12 2008, 06:44PM
Location:
Posts: 51
another problem that i have run into is that i do not know were to get small transformers for use similar to that of a flyback. i can obtain cores and wire from the local parts store. but can anyone supply information on the winding of this type of transformer - i would like to keep the size of the transformer to around 1 inch square. -- - - any help?
Registered Member #1389
Joined: Thu Mar 13 2008, 12:50AM
Location: Pittsburgh, PA
Posts: 346
I have used a Kodak Funflash flash board with the switch soldiered together and the rectifying diode removed with 400V 22nF caps before, and it worked great. Made 10kV from a 1.5V battery.
Registered Member #1537
Joined: Thu Jun 12 2008, 06:44PM
Location:
Posts: 51
thant seems like a good idea. i spose i can use multiple circuits with their secondaries in series to increase the voltage and put them in paralell to increaes amps. though there might be an issue with timing or lack of synchronisation beween all of the oscillators. would this be easy to fix by using one large transistor (or what ever it is) driving all the smaller tranformers separately. thoguh another proble could also be that putting the secondaries in series might make the voltage on that side too high allowing flashover an so ruining the transformers. how many vols do you think these tiny transformers can take? you got 10k how about 20 or 30k (using some insolation to stop the pins arcing) thanks for any help anyone can give, afterall it would be cool to see a bank of these liny transformers putting out a half decent power. thanks
Registered Member #1389
Joined: Thu Mar 13 2008, 12:50AM
Location: Pittsburgh, PA
Posts: 346
The transformers saturate at 3-6V in, which translates to about 600-1200VAC (half square wave) out. I used a single AA or D cell battery which gave me 300V out, and put it through a Villard/CW Cascade to get 10kV out. That would be 18*2*300V=10,800V (Ideally, I'm sure the voltage was much lower).
Registered Member #1537
Joined: Thu Jun 12 2008, 06:44PM
Location:
Posts: 51
could this arangement be used to icrease output - connecting secondaries in series
the transformers you used were they the charginh transformer or were thery the higher voltage trigger transforme? the trigger ones develop about 2kv (presumably at minimal current) two of these with the secondary in series would give 4kv then wun that through a small cascade might give more efficiency. (ie higher feed voltage and less stages in the cascade)
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villard cascade
