Flyback Questions

[zeno]

Using rough numbers, foggy memory & I am NOT an engineer.........

Typical set horz tube draws 200ma at 400V so power is 80 watts.
IIRC a pair is used in home brew ham amps to give a solid 100W.
Waveform at horz out plate is DC with 1KV spikes on top of that
going +. ( DO NOT MEASURE !)
Spikes are very narrow at 15,750. Horz tube is running
very deep class C. The tube is biased off ( -60 to -90 on G-1 )
most of time.
You may want to get an RCA, GE or Sylvania tube manual to help.
Also as many of the same FBT's as you need so you only
engineer them once.

73 Zeno
LFOD !

[Alan Sailer]

zeno,

Your rough number seem in the ballpark to me. I'd be surprised if someone told me horizontal output transformers
are driven at 10 watts or a thousand watts.

Don't worry about measurement stuff I'm perfectly happy with HV as long as it's low power. I've been messing with
HV AC and DC for a number of years and have remained shock free.

miniman82,

All the globe power supplies I have seen (about seven so far) have been some sort of oscillator driving MOSFET(s)
which directly drive a HV step up transformer, usually an un-gapped flyback style. Cascade multiplier put out DC,
not useful for this stuff.

benmann94,

I'll check out Heyboer. I'm guessing they do coils?

The same comment on the Cockcraft-Walton, DC is no good for driving a capacitively coupled plasma globe.

Cheers.