Re: [TCML] Setting optimal phase angle of SRSG motor

["Teslalabor" <teslalabor@xxxxxxxxxxx>]

Hi John,

measuring the firing voltage would be great, but how can this be done?

Stefan

----- Original Message ----- 
From: "Futuret" <futuret@xxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, December 07, 2010 8:16 PM
Subject: Re: [TCML] Setting optimal phase angle of SRSG motor


Hi,

Sometimes you can tell somewhat by the sound.  When the two
firing points are somewhat balanced, the coil may sound more high-pitched.
If you have a scope, you can adjust the phase for two equal firing voltage
peaks in each 50Hz half-cycle.

Cheers,
John










-----Original Message-----
From: Teslalabor <teslalabor@xxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Tue, Dec 7, 2010 1:04 pm
Subject: [TCML] Setting optimal phase angle of SRSG motor


Hi,

I actually try to find out the optimal phase angle position of the motor in

my 200bps SRSG. I use a dummy load with halogen bulbs. I am not sure WHAT

exactly the optimal point is! Is it, when the 4 firing-sparks at the 4

electrodes seem to be of the equal "size" / brightness when variac is at

full voltage or when the bulbs are of highest brightness (but this is not

easy to see!) OR is it the point where all 4 electrodes begin firing at the

same time when rising the voltage on the variac? But in this case, 2 of the

4 electrodes seem to fire much brighter then the other 2, when variac at

full voltage. So I am a little bit confused, which point I should take.



Stefan



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