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Re: Air Blast vs RSG

In a message dated 5/31/00 6:50:09 PM Pacific Daylight Time, tesla-at-pupman-dot-com 

> Does anyone know what break rates are
>  attainable with an air blast gap?  I would like to use this in a magnifier
>  setup, which requires a really high bps.  
>  Another question I had was, does the air blast source really have to be a
>  compressor?  That would really ruin the gap's simplicity...  I just don't 
> want
>  to spend all of my time and money making a complex synchronous rotary 
> gap
>  which requires phase adjustment each time the motor starts.  
>  Thanks,
>  -Michael


Can you explain your theory for why a high break rate is needed
(or better) for a magnifier?  A sync rotary gap does not need to have
the phase adjusted everytime the motor starts if you use the right
type of sync motor (salient pole, hysteresis, and maybe others, are 
the right type).  A sync rotary gap does not have to be complex or
expensive.  You can modify a cheap induction motor for sync
operation.  Induction motors can be gotten from old washing machines,
dryers, or from hamfests, etc.  


I've never used a true air blast type gap, so I can't help there.

John Freau