Some questions about chokes / inductors

[daniel_doyce]

Hello. Does anyone know if there are any variable/ adjustable bifilar chokes that are made? Would it be possible to replace it with an inductor from something that uses very high frequencies  and voltages (ie ham radio) but is not bifilar? What is a hammond choke- mentioned by crux in one of his posts (on www.waterfuelcell.org) and why would they be desireable? Also what frequencies should it cover. Any specs would be helpful. Thanks again.

As far as an update I'm working on a pulsing generator, stepping it up to high voltage and then using chokes and diodes (to protect it- any recommendations?). Theoretically, I think I have a design to get high voltagesand pulsed square waves but not sure. I still have to get all the details finished before I get all the parts (I need to know what to get). However, my knowledge of electronics is limited (very limited) so any help is appreciated.

[hydro]

Chokes inductors whatever you want to call them.

They restrict Current, Reducing amp flow, "Resistor, Resist While charging magnetic core"

They Produce Current, Creating amp flow, "Discharge, Magnetic field core collapses during Charge off time"

They Store energy like capacitors, using magnetic fields. "Energy Storage"

They Lower the input voltage when under load, can also raise the input voltage when no amps are consumed. "Choosing Between voltage potential or Amps"

They are used for filters, to filter out unwanted frequency's. "Chokes have their own a resonate freq, Tunable cores, Wiper arm, parallel cap, (LC circuit)"
Just a list of some things chokes are good for, There is much math with using chokes properly.

[nogarats]

If you take a bifilar choke, and make it tunable (inserting a yoke inside)"not sure yoke is the proper name fot it" so it's ajustable, would that change the ability to adjust the coil so  it could match the freq. of the tubes ?