Re: [TCML] Using thyristor to dump energy in one half cycle?

[Futuret <futuret@xxxxxxx>]

Jolyon,

Richard Hull tried something like this a number of years ago.  He used
a hydrogen thyratron, but his coupling wasn't tight enough to take full
advantage of the idea.  He considered using back to back thyratrons
to let more than one half cycle pass.  Another idea would be to use
a diode to pass the other half cycle.  It's hard to get very close
coupling without primary to secondary arcing problems in a TC.
Hydrogen thyratrons are damaged by reverse currents, so it's 
important not to let the current reverse.  There are special
(expensive) thyratrons available that can handle some degree of
reverse current.

Cheers,
John

 

 

 

-----Original Message-----
From: vatercox <vatercox@xxxxxxx>
To: tesla <tesla@xxxxxxxxxx>
Sent: Wed, Nov 16, 2011 12:01 pm
Subject: [TCML] Using thyristor to dump energy in one half cycle?




Dear List,

I am asking if it would be possible to use a thyristor or thyratron as the 

switching element in a TC if it could be arranged that all the energy in the 

primary cap would be "dumped" (i.e. the capacitor completely discharged) within 

one half-cycle of the oscillatory period. I am under the impression that 

thyratrons and thyristors (possibly excepting  hydrogen thyratrons) are in the 

main considered practically useless for TC  due a reputation for "slow" 

switching. Would some kind of "hard" switching -e.g. extended application of the 

gate current in an SCR after the primary cap had discharged- be able to 

accomplish this and if so would it be of any benefit?



Jolyon

_______________________________________________

Tesla mailing list

Tesla@xxxxxxxxxx

http://www.pupman.com/mailman/listinfo/tesla


 
_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla