Re: Some more Marx questions (fwd)

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Original poster: Steven Roys <sroys@xxxxxxxxxx>



---------- Forwarded message ----------
Date: Sat, 15 Jul 2006 16:10:05 -0500
From: Dr. Resonance <resonance@xxxxxxxxxx>
To: High Voltage list <hvlist@xxxxxxxxxx>
Subject: Re: Some more Marx questions (fwd)



The 50 Ohm resistor by itself will be enough resistance to "spoil the 
circuit Q factor", and, in series with the air core inductor, will do the 
job.  You should still disconnect power supply prior to firing.  It's an 
easy job for a standard $180 PLC.  You push one buttom and the PLC gives the 
warning buzzer, warning lights, energizes the charge relay, disconnects the 
HV relay, more lights and warnings, then 2 sec later fire the unit and 
leaves the HV relay disconnected awaiting you to push the fire button again 
which does the complete cycle over again.

Dr. Resonance
----- Original Message ----- 
From: "High Voltage list" <hvlist@xxxxxxxxxx>
To: "hvlist" <hvlist@xxxxxxxxxx>
Sent: Friday, July 14, 2006 11:15 PM
Subject: Re: Some more Marx questions (fwd)


> Original poster: Steven Roys <sroys@xxxxxxxxxx>
>
>
>
> ---------- Forwarded message ----------
> Date: Fri, 14 Jul 2006 13:36:29 -0700
> From: Jonathan Peakall <jpeakall@xxxxxxxxxxxx>
> To: High Voltage list <hvlist@xxxxxxxxxx>
> Subject: Re: Some more Marx questions (fwd)
>
> Doc,
>
>>
>>
>> You should also add a series 200 Ohm, 200 Watt resistor in series with a
> 2"
>> ID PVC tubing inductor (air core) wound approx 16 inches long with #24 
>> PVC
>> insulated wire.  This will clip any incoming transients from the quick
>> connect / disconnect of the power supply and the cap bank.  Mount this
> array
>> on an insulating material such as PE, PS, etc.
>>
>> Dr. Resonance
>
>
> Thanks for that advice. I'm glad I heard of it now before I got further in
> construction. I guess I'm glad I had a PITA week and didn't get as far as 
> I
> had hoped on the project :-0.
>
> Looking around in the junk stash, I have found a 50ohm, 225 watt resistor
> and two 1k/100 watt resistors which I could put in parallel for 500/200.
> Could I use either of these, or do I need to find a 200/200 as suggested?
>
> I am so surprised at the low traffic of this list, when one considers the
> amazing amount of HV expertise on tap here. Once again, many thanks!
>
> Jonathan
> www.madlabs.info
>
>
>
>
>