[TCML] Primary Coil Simulator for Safe Primary Circuit
pslawinski at gmail.com
Mon Jul 26 06:28:18 MDT 2010
I've run my coils DRSSTC, and VTTC off the k-a-w several times with no
problems. Your mileage may vary.
On Sun, Jul 25, 2010 at 21:56, Paul Brodie <pbbrodie at bellsouth.net> wrote:
> I would be scared to death to put a Kill-a-watt meter on the same circuit
> driving a Tesla Coil. I am pretty sure it would quickly go the way of garage
> door openers that are near running Tesla Coils!
> Think Positive
> ----- Original Message ----- From: "Gary Lau" <glau1024 at gmail.com>
> To: "Tesla Coil Mailing List" <tesla at pupman.com>
> Sent: Sunday, July 25, 2010 10:11 PM
> Subject: Re: [TCML] Primary Coil Simulator for Safe Primary Circuit
> Hi Phillip,
>> Thanks for your thoughts on this.
>> I think a thermocouple would be better suited than an optical sensor,
>> because when using a static gap, there are surprisingly low frequency
>> variations in power. This is evident if you've ever viewed the mains
>> current on an analog meter movement. I think thermal equilibrium would be
>> achieved in a few tens of seconds, and this would smooth out the
>> due to the static gap chaos.
>> I worry about the accuracy of monitoring the input power. When pushing
>> into the NST, I'd be concerned with core saturation giving misleading
>> results. Does a Kill-a-watt meter not register saturation? Doesn't
>> though - I have a thermocouple meter and I don't have a Kill-a-watt meter!
>> With the bulbs, all the power going to the bulb is real processed power.
>> Regards, Gary Lau
>> MA, USA
>> On Sun, Jul 25, 2010 at 9:08 PM, Phillip Slawinski <pslawinski at gmail.com
>> On Sun, Jul 25, 2010 at 18:40, Gary Lau <glau1024 at gmail.com> wrote:
>>> > However, if you replace the primary with the dummy load, one can >
>>> > change the cap size and nothing else, and gauge the amount of power
>>> > processed by the brightness of the lamps. For a more quantitative
>>> > you can mount a thermocouple on the lamp and see with what capacitor >
>>> > causes the lamps to get the hottest. I believe that this would give a
>>> > accurate determination of the optimum capacitor size. I'll have to
>>> > resurrect my coil and try this!
>>> I think a photo sensor of some type would be better suited to this. The
>>> thermocouple would work, but it will not be able to react to changes very
>>> quickly, like adjusting the voltage on the variac.
>>> This makes me think, do we even care about what the bulbs are doing? Why
>>> just measure the actual power coming from the wall? The power coming from
>>> the wall is proportional to the power going out of the NST. Any increase
>>> the output side will show up on the input side. The Kill-a-watt would be
>>> perfect for this task, and provides those quantitative measurements you
>>> -Phillip Slawinski
>>> Tesla mailing list
>>> Tesla at pupman.com
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