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Re: [TCML] SRSG "sputter"
Thanks a lot Gary. Do you have any documentation or design source for this on the web anywhere, would you? I'd like to see yours before I try and build my own. Wouldn't want to design something with a novice oversight and end up blowing these things to bits in my face somehow...
On Jul 13, 2010, at 7:32 AM, Gary Lau <glau1024@xxxxxxxxx> wrote:
> Definitely the 6" sticks. As the full bang voltage is applied across the
> lamps, I doubt the screw bases would hold off such voltages. I never tried
> with a 15/30, but I'd use 3 bulbs just the same.
>
> Regards, Gary Lau
>
> MA, USA
>
> On Tue, Jul 13, 2010 at 12:22 AM, Brandon Hendershot <
> brandonhendershot@xxxxxxxxx> wrote:
>
>> Hi Gary,
>> Regarding the halogen flood lamps, are you referring to the little 6"(ish)
>> long stick like bulbs, or the big honking cone shaped lamps? Would it make a
>> difference? Also, do you think a 15/30 could get away with less bulbs/lamps,
>> or should I just play it safe?
>> Thanks a lot,
>> Brandon
>>
>> On Jul 8, 2010, at 1:53 PM, Gary Lau <glau1024@xxxxxxxxx> wrote:
>>
>>> No. One can't run a coil unless there's a safe place for the energy in
>> the
>>> caps to go to. Normally that would be the secondary coil and topload
>>> sparks. If the primary is left open-circuit, the cap won't charge and
>> the
>>> gap won't fire normally. If the primary is replaced with a short
>> circuit,
>>> the cap will charge normally, but each time the gap fires, it will
>> directly
>>> short out the charged cap, and this will be extremely stressful on the
>> cap
>>> (HUGE discharge currents) as well as the gap (all the energy that went
>> into
>>> charging the cap will be dissipated in heat, light, and sound, and the
>> gap
>>> will be a fearsome thing).
>>>
>>> Instead, the primary can be replaced with three series-connected
>> 120V/500W
>>> (for with a 15/60 NST) halogen flood lamps, and these will safely
>> dissipate
>>> the charged cap's energy and permit the cap charging behavior to be more
>>> easily studied.
>>>
>>> Regards, Gary Lau
>>> MA, USA
>>>
>>> On Thu, Jul 8, 2010 at 3:54 PM, Brandon Hendershot <
>>> brandonhendershot@xxxxxxxxx> wrote:
>>>
>>>> Hi Joe,
>>>> Is it possible for you to disconnect you're primary coil and just run
>> the
>>>> gap on you're capacitors alone? That way you could eliminate any issues
>>>> beyond the spark gap if there may be any.
>>>> Brandon
>>>>
>>>>
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