The capacitance value of the caps is right on the mark per the meter, but
as you said under load they may not hold up. I'm still going to check out
the NST later today. My plan is to go ahead and assemble the complete coil
this weekend and see what happens. I hate the thought of throwing out a new
NST because of stupid.
Another lesson learned.
Tim
On Thu, Mar 27, 2014 at 8:36 AM, Teslalabor <teslalabor@xxxxxxxxxxx> wrote:
> The chances are very low because the symptoms you are telling us, are
> typical for blown caps or transformers, when the SRSG suddenly stop working
> well, the timing gets incorrect... Which is caused by blown transformers /
> caps. Remember that only checking the capacitance of the caps is not very
> "useful" because capacitance could be fine but the caps are failing under
> load conditions...
>
>
> ----- Original Message ----- From: "Tim Flood" <tfloodrr@xxxxxxxxx>
> To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
> Sent: Wednesday, March 26, 2014 11:46 PM
> Subject: Re: [TCML] Sputtering Gap
>
>
> Thanks guys for the input. Sounds like I'm the dummy!
>
> I hope I didn't run long enough to due permanent damage. It was run that
> way for only a few seconds, three times. The caps were not warm nor had any
> visible anomalies. I'll check the MMC value tomorrow and the transformer
> output using a jacobs ladder. Everything is at work so I'll have to wait
> until tomorrow.
>
> Thanks again. What are the chances Imay not have done permanent damage?
>
> Tim
>
>
> On Wed, Mar 26, 2014 at 5:02 PM, teslalabor@xxxxxxxxxxx <
> teslalabor@xxxxxxxxxxx> wrote:
>
> Very Bad idea. When doing such Experiments you have to use at least a
>> dummy load in Form of halogen bulbs, which replaces the primary. When you
>> simply Run it without secondary, you kill your caps and neon, i think
>> thats
>> what happened in Your case.
>>
>> Gesendet mit meinem HTC
>>
>> ----- Reply message -----
>> Von: "Tim Flood" <tfloodrr@xxxxxxxxx>
>> An: "tesla@xxxxxxxxxx" <tesla@xxxxxxxxxx>
>> Betreff: [TCML] Sputtering Gap
>> Datum: Mi., Mär. 26, 2014 21:25
>>
>> Could really use some help.
>>
>> Just completed a new 15/60 NST powered coil with a SRSG. With the tank
>> circuit completely wired and the secondary removed I thought why not check
>> the operation of the rotary gap. The first time I powered up it ran fine,
>> firing smoothly up to the max variac setting.
>>
>> Subsequent power-ups resulted in the gap sounding like gun fire. The
>> safety
>> gap on the SRSG is firing, the arcs at gap alignment vary in intensity and
>> there are smaller arcs running around the conductor ring on the disc.
>>
>> The rotor is 5" diameter with four 1/8" carbide electrodes turning at 1800
>> RPM.. There are two stationary electrodes on the front side. Electrode
>> spacing is .030" per gap.
>>
>> Thank you,
>>
>> Tim Flood
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