Re: [TCML] DC charging reactor

[<rwsmith@xxxxxxxxxxxxxx>]

  Ibrahim, I was a little confused by SSG. I thought maybe it meant static spark gap but now that I think about it you must have meant synchronous spark gap.  The neon sign transformer coils I was talking about used multiple static spark gaps.   I have some larger DC Tesla coils that use rotary spark gaps and the break rate or charging reactor inductance doesn't seem to be too critical with them.  

Roger  
---- Ibrahim Khaleel <xbox1900@xxxxxxxxx> wrote: 
> Hello Roger, thank you for the kind response. 
> Would you please give a hint on the behavior of SSG if used with a full wave 
> rectifier and a smoothing Cap? how to expect the firing point and the breaks 
> rate in such a design? are you also calculating the smoothing cap @ 10% ripple? 
> and how the chock time constant would be taken in consideration? do you have a 
> working formula to predict the maximum charging voltage in tank capacitor?
> 
> I really appreciate your help and guidance. 
> Have a nice day!
> 
> Ibrahim
> 
> 
> 
> 
> 
> ________________________________
> From: Roger Smith <rwsmith@xxxxxxxxxxxxxx>
> To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
> Sent: Thu, August 26, 2010 4:53:02 AM
> Subject: Re: [TCML] DC charging reactor
> 
> Hi Ibrahim,   I have built several DC Tesla coils using neon sign transformers 
> with SSGs but I have used a full wave rectifier followed by a filter capacitor.  
> For a charring reactor I have often used the secondary of another neon sing 
> transformer.
>         These Tesla coils tend to have a very high break rate and produce 
> shorter but more flame like sparks.  They are awesome and well worth building if 
> you can find all the parts you need to build one.
> 
> Roger
> ----- Original Message ----- From: "Ibrahim Khaleel" <xbox1900@xxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Wednesday, August 25, 2010 10:55 AM
> Subject: [TCML] DC charging reactor
> 
> 
> Hello every one!
> 
> Am planning to build my first DC TC of 20 kW throughput. Am using 15 kV / 30 mA 
> NST. Any info in this regard is most appreciated, especially in how to calculate 
> the resonance charging reactor. Is it possible to use a half wave rectifier to 
> charge the tank cap ( am using SSG)?. Would the BPS rate be @ 50 in this case, 
> since the voltage appears only half-cyclic (10 msec.), providing I employ a 
> d-Q-ing diode?
> 
> Thanks in advance for advising.
> 
> Regards
> 
> 
> 
> 
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>       
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