I adj my sync gap using a scope, when the sine wave is at its peak is when
my gap is aligned and fires. The peak of the ac sine wave is when I want the
cap to discharge. So I set the gap to fire at precisely peak of the charging
sign wave. I want my tank cap in all cases to fully charge and that is at
the peak of the sign wave. So no matter what size tank cap I have, I want it
fully charged and that will always be at the peak of the sign. If it fired
any other place it would not be full charge. The peak ac don't change.
-----Original Message-----
From: Tesla [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of Tedd Dillard
Sent: September 11, 2020 10:56 AM
To: Futuret; Tesla Coil Mailing List
Subject: Re: [TCML] Old post, Sync. rotary phase effect
The setting of a SRSG is adjusted to maximize the power transfer of a given
arrangement. The peak will occur at a specific phase angle with that set
up. When there are changes in the arrangement of the set up the peak may
occur at a different phase angle so the phase setting of an SRSG would need
to be adjusted to the new peak phase angle. Am I wrong?
I am only stating my understanding as I understand it.
On Sep 11, 2020 10:28 AM, "Futuret via Tesla" <tesla@xxxxxxxxxx> wrote:
> The phase setting definitely makes a big difference at 120 bps. In
> contrast, at 240 bps as the phase is shifted, one "bang" gets stronger and
> the other gets weaker with the result being basically steady spark length
> output and sound output. If the phase is shifted even further, the system
> might start running at 120 bps.
> John
>
>
> -----Original Message-----
> From: shaun <snoggle@xxxxxxxxxxxxxx>
> To: 'Tesla Coil Mailing List' <tesla@xxxxxxxxxx>
> Sent: Thu, Sep 10, 2020 9:54 pm
> Subject: Re: [TCML] Old post
>
> Hi Steve this was a clip out of a conversation that two other people had,
I
> was just questioning the statement that did not make sense to me.
>
> I also have made a john freau phase adjuster, and im running 120 pps and
do
> see and hear a difference at before the top of the sine and after. But
like
> many others I don't think it makes much of a difference at higher ppm and
> more power. I get about 45 degrees of movement and mine runs and sounds
> best
> at little before top of sine. With only 2 presentation per revolution, it
> make a big difference where I charge at.
>
>
>
> -----Original Message-----
> From: Tesla [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of Steve White
> Sent: September 10, 2020 8:15 PM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] Old post
>
> This doesn't make sense to me. As you stated the firing is the same
> regardless of the capacitance. I have a John Freau style phase adjuster. I
> have tried adjusting the firing point from nominal and I see no effect. I
> am
> running at 240 PPS. Maybe you would see more affect at 120 PPS.
>
> Steve White
> Cedar Rapids, Iowa
>
> ----- Original Message -----
> From: "shaun" <snoggle@xxxxxxxxxxxxxx>
> To: tesla@xxxxxxxxxx
> Sent: Thursday, September 10, 2020 9:07:32 AM
> Subject: [TCML] Old post
>
> This is a excerpt of a thread by Ed Sonderman
>
>
>
> I had a tuning problem, even when the primary tap was set right where it
>
> should be - according to my calculations. John Morawa pointed out to me
> that
>
> I needed to re-set the phase angle on the motor after increasing the
>
> capacitance - which hadn't occured to me.
>
>
>
> Ed Sonderman
>
>
>
> In the above statement, Mr Morawa stated about needing to re-set the phase
> after increasing the tank capacitance
>
>
>
> This is a synchronous spark gap they are talking about.
>
> Let just assume that the srsg is set to fire just before peak, how is
> changing the tank cap going to change the phase, as it is still firing at
> the same phase no matter what size tank cap is used.
>
>
>
> Any thoughts, I do enjoy Ed's adventures and documentation,
>
>
> _______________________________________________
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>
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