Re: Q - Driving HV DC pulses? (fwd)

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Original poster: <sroys@xxxxxxxxxxxxxxxxx>



---------- Forwarded message ----------
Date: Wed, 05 Oct 2005 18:38:30 -0400
From: Jeff Bullock <jeff@xxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Q - Driving HV DC pulses? (fwd)

Hi Jim,

Thanks for your reply.

---------- Forwarded message ----------
Date: Tue, 04 Oct 2005 07:36:57 -0700
From: Jim Lux <jimlux@xxxxxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Q - Driving HV DC pulses? (fwd)

> What are your requirements in terms of:

> 1) Output current

Very low current/high voltage.

> 2) Pulse width

Adjustable down to micro second intervals.

> 3) Rise and fall time

As fast as possible.

> 4) repetition rate of the pulses

Once again, adjustable.

> 5) Jitter

While laser power supply circuits may be a good fit to start with, the
initial goal is to minimize timing deviations and produce regular, clocked
pulses.

> How adjustable does it need to be?

Its whole purpose is to be suitable for a wide variety of experimentation
and therefore the output pulses need to be as accurately
adjustable/measurable as possible.

> FETs can do the job (you have to stack multiples in series).  So will a
> variety of tubes.

Do you mean in a Darlington, multi-step configuration?

> If you look around for "radar modulators" you'll find some information.

Interesting idea.

> An invaluable source is the Los Alamos National Lab report by William
North
> called "High Power Microwave Transmitters", which is available on the web
> at a variety of places.
> (http://hot-streamer.com/TeslaCoils/OtherPapers/NorthReport/)  Lots and
> lots of useful design information.

Good info. Thanks!

Regards,

Jeff