[TCML] rsg pulsing
forcijo10 at gmail.com
Fri Sep 19 08:22:27 MDT 2008
Ok sure. Here are some specs. power suply 4 mot's around 8.4kv at 4.8kw.
primary cap 88nf 24kvdc cde 942c16p33k caps. THe nameplate speed on the
motor is 1800 rpm so i may not be running it at exactly 1800 rpm. Here is a
pic of how the rsg is set up.
http://flickr.com/photos/25967047@N07/2778479246/sizes/l/ Here is a pic of
my whole setup. The orange thing attached to the left side of the variac
box is the dc motor controller.
http://flickr.com/photos/25967047@N07/2777622579/sizes/l/ I hope this
On Thu, Sep 18, 2008 at 10:02 PM, bartb <bartb at classictesla.com> wrote:
> Hi John,
> I just got back on emails tonight after a day or two outage, so I'm
> probably late on my reply (ignore if you've found the problem).
> I find pulsing odd in your case. This is likely a simple asynchronous
> rotary? I realize you specified 1800 rpm, but I assume that is just a rated
> rpm for the DC motor? Can you give cap size, power source (MOT's?), and gap
> electrode arrangement and spacing? Also, is it a constant pulse or
> intermittent? I'm probably not much help with this as I've never encountered
> a problem like this with a rotary, but I wonder if the MOT's are affecting
> the motor on the mains circuit. You mentioned 30% on the variac and both
> coil and rotary pulse. So I'm wondering if it pulsed at less voltage. I
> expect it pulsed right when the coil began operating (but wanted to be
> Take care,
> John Forcina wrote:
>> Ok tonight i took my big coil out for a run since i havent really got a
>> chance to tune it yet. I noticed that as soon as i got it to 30% or
>> on the variac the spark gap and coil started pulsing really bad. it would
>> shoot 6' streamers for about 1/2 second and then stop for about 1/2
>> The rsg is a dc 1800rpm 240bps. I still have no pfc so that may be a
>> problem. Anyway why is this doing this? Any tips or suggestions would be
>> greatly appreciated.
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