Re: Get it over with

To: tesla-at-pupman-dot-com
Subject: Re: Get it over with
From: richard hull <rhull-at-richmond.infi-dot-net>
Date: Mon, 3 Feb 1997 08:03:54 -0500 (EST)
Subscriber: rhull-at-richmond.infi-dot-net Mon Feb 3 21:29:54 1997

At 06:25 PM 2/2/97 -0700, you wrote:
>Subscriber: Kilroy-at-bscn-dot-com Sun Feb  2 17:29:42 1997
>Date: Sun, 02 Feb 1997 02:04:32 -0600
>From: Kerry Ludwig <Kilroy-at-bscn-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: Get it over with
>
>
>>>3.  I would like to use my 12kv/63ma neon trans. and build a filtered d.c.
>>>supply to run my coil off of.  Can anyone tell me how to figure the inductor
>>>(in series with trans) and cap (in parallel with trans) values for this
>>>circuit?  (I hope to someday also build a larger scale coil of similar
>>>design, so the actual formula's would be useful.)
>>
>>
>>I assume you are talking about a DC supply, series filter choke to keep RF
>>and kickback out of the DC supply.  The general rule is to use the largest
>>value inductor you can get your hands on which will take the voltage stress.
>>Such items are military items only and found only surplus at hamfests. I use
>>a .4 henry unit rated for 20 kv on my small DC system.   R. Hull
>
>I am looking to build a circuit to filter out the 60Hz ripple of the
>rectified output from the trans. At least down to tolerable levels. Maybe
>less than 5%?  I planned on using seperate filters for protection.
>
>Kerry "Kilroy" Ludwig
>Kilroy-at-BSCN-dot-com
>
>

Kilroy,

Ripple (60 hz) is normally handled by the filter capacitor and not the
inductor.  The inductor is sort of a current spike filter.

Richard Hull, TCBOR