Re: Sync motor question

Hi John,
    Moorecroft wrote several papers indicating that biasing of the spark gap
improves quench.  The current can oscillate back and forth but if the
voltage across the gap never falls below zero (the gap will open at some low
voltage due to it's characteristic) a reformation energy loss mechanism can
be prevented, i.e., by staying in the first quadrant of the IV
characteristic curve.  Crossing from the first to the third quadrants
results in energy loss.


----- Original Message -----
From: Tesla List <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Thursday, June 10, 1999 5:37 PM
Subject: Re: Sync motor question

> Original Poster: FutureT-at-aol-dot-com
> In a message dated 99-06-10 16:36:27 EDT, you write:
> << Original Poster: "B**2" <bensonbd-at-erols-dot-com>
> > Hi John, All,
>  >    Can your synchronous rotary gap be easily modified to fire only on
>  >one polarity of the AC voltage waveform?  Suppose this were possible.
>  >Suppose you fired on one polarity and then the other without changing
>  >anything else.  Would the output streamer be of a different length or
>  >character in each case?  Assumption: The firing takes place at the
>  >peak for each case. >>
> Hi Barry, all,
> Yes, I can fire at 60Hz, with lock up to either polarity, but I don't
> see how that would affect it, the RF will still be the same basically.
> I guess the first oscillation would be of an opposite polarity in each
> case though, is this what you're refering too?  Just happens I was
> thinking of re-exploring 1xFmains firing rate.  So I may give it a try.
> Cheers,
> John Freau