Re: NST frequency

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Darin Willson by way of Terry Fritz <twftesla-at-qwest-dot-net>" <darinwil-at-execpc-dot-com>

I think I was trying to get too much out it. With three stages there is no
corona leakage. The
case of the transformer said that if the HV leads are shorted it will
stopworking untill
the ground is disconnected for 10 sec. The diodes I am not sure of the
value as 
they were from a bulk pack but it was labled as rectifier diodes. I will
have to get the value of the caps
later but they ceramic disk rated for 3Kv. Ill lookup the capacitance and
post it once I get the value.
once again thanks for the help 
8/1/2001 8:17:43 PM, "Tesla list" <tesla-at-pupman-dot-com> wrote:

>Original poster: "Kevin Ottalini by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <ottalini-at-mindspring-dot-com>
>
>Darin:
>        The number of stages should not directly affect the inverter except
>under load. I'm guessing that you actually overvoltaged something.
>
>What exactly did you use for the caps and diodes in the Cockroft?
>
>You should also monitor the input current to the inverter.  If the current
>goes
>up when you add the Cockroft on then you have some sort of short or
>breakdown happening (I expect a little increase).  Make sure the HV output
>from the Cockroft is isolated (no load) during the test.
>
>You shouldn't hear (or see) any corona (crackling) when the unit is
>running.  If you do, than you have an isolation and leakage problem
>that needs to be fixed before anything else can happen.  You may
>actually be trying to generate too much voltage ... 9kv to 15kv DC
>is all that you need for a DCTC.
>
>Without knowing exactly the voltage and frequency of the inverter, it will
>be difficult to calculate what the Cockroft will do, but if you supply the
>diode and capacitor values you used (value and voltage and type) I can
>give you an approximate idea of what is happening.
>
>Kevin
>
>
>----- Original Message -----
>From: "Tesla list" <tesla-at-pupman-dot-com>
>To: <tesla-at-pupman-dot-com>
>Sent: Wednesday, August 01, 2001 3:23 PM
>Subject: Re: NST frequency
>
>
>> Original poster: "Darin Willson by way of Terry Fritz
><twftesla-at-qwest-dot-net>" <darinwil-at-execpc-dot-com>
>>
>> Thanks for the info, I have built an Cockroft it is 3 stages. I dont know
>> how much it puts out but If I go for 4 stages
>> the dead short protection for the inverter kicks in when I discharge it
>and
>> I have to disconnect the power for 10secs
>> before it will reset. Any one know where I can find equations for a
>> Cockroft so I can figure out what I am getting so far?
>>
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