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Re: [TCML] SISG PSU problem



Hi Terry,

> The Piranha primary circuit is resonant. It will ring the transformer 
> voltage higher than normal.
- I *assumed* the diodes to block the *free* exchange of energy, 
which is a precondition for resonant rise. Obviously I need to have a 
look into my text books again.

65 H and 162,5 nF resonate at 50 Hz which is exactly the local 
frequency of the mains. I should measure the inductance of the 
secondary winding of this MOT also.

Are there any means of protecting the secondary winding of the MOT? 
Spark gap?
 
> The normal peak voltage from the transformer is multiplied three 
> times in the diodes and caps once the coil is firing. 
- Is the factor always "three times"?
 
> The medical transformer should not have failed.
- It was not potted.


Bye		Herwig

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Greed is the root of all evil !
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