If I remember correctly, at 120 bps, if you change the setup by changing the capacitor size, then yes, you have to change the phase setting because a larger capacitor will likely take longer to charge. But at 240 bps the phase position will be less important as I mentioned. Yes in general you want to adjust the phase for maximum power throughput and maximum spark output.
John
-----Original Message-----
From: Tedd Dillard <tedd.dillard@xxxxxxxxx>
To: Futuret <futuret@xxxxxxx>; Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Fri, Sep 11, 2020 10:55 am
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@pupman. com] 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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