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Re: [TCML] SISG Repair



Michael -
 
There hasn't been much information circulated about failure modes with SISG coils, so would it be possible for you to provide some additional information on your coil?
 
1. Are your SISG modules from Mark Dunn (4 modules per PCBA), copies of Terry Fritz 2-module PCBA, or some other board design?
2. What IGBT P/N did you use?
3. What SIDAC P/N did you use?
4. What value capacitors are used in the charging/tank circuit? 
5. Are you using a 1-MOT or a 2-MOT power supply, or something else?
6. Do you know the approximate resonant frequency of your coil?
 
It should be fairly easy to desolder the IGBT and determine if it has failed, or if the SIDACs have failed.
 
Quarkster

--- On Wed, 7/6/11, caspina <caspina@xxxxxxxxx> wrote:


From: caspina <caspina@xxxxxxxxx>
Subject: [TCML] SISG Repair
To: "TCML pupman" <tesla@xxxxxxxxxx>
Date: Wednesday, July 6, 2011, 4:33 AM


Hi list


I have a SISG coil, SISG = 15 modules (15kV)

Now 6 Modules are shorted and need to be replaced.
I'm not sure what to do with the others...
Could they be 'partly damaged' but still work for a certain time ? Best to
replace all modules, maybe even everything?
Has anyone experience with this?

Michael.
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