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Re: Beginner Measurements
At 04:25 AM 10/25/96 +0000, you wrote:
>> Subject: Beginner Measurements
>> Subject: Quick and Dirty resonance check
>
>From bert.hickman-at-aquila-dot-comThu Oct 24 22:17:25 1996
>Date: Thu, 24 Oct 1996 06:33:24 -0700
>From: Bert Hickman <bert.hickman-at-aquila-dot-com>
>To: tesla-at-pupman-dot-com
>Subject: Re: Beginner Measurements
>
>Tesla List wrote:
>>
>> Quick and Dirty resonance check
>>
>> >From jparisse-at-ddlabs-dot-comWed Oct 23 21:37:51 1996
>> Date: Wed, 23 Oct 1996 10:49:27 -0700
>> From: "Jeff W. Parisse" <jparisse-at-ddlabs-dot-com>
>> To: tesla-at-pupman-dot-com
>> Subject: Beginner Measurements
>>
>> All,
>>
>> I just started using a tip from Richard Hull to measure the resonant
>> freqs of our tesla coils and I feel as if I've discovered the "next
>> level" (a self realization... I know you guys already know this stuff).
>> I'll repost the tip at the bottom of my post...
>>
>> My questions are... Now hungry for more actual readings (instead of
>> computer projections or forumlae) I want to know if there is a way to
>> measure primary resonance with a VOM, Frequency Counter and Frequency
>> Generator (old Heathkit 1Hz - 1MHz, 10V)? Can one use measurement
>> techniques to pinpoint the tap point? Is ther a way to measure the mH of
>> a particular primary coil. Since inductance increases as one moves a tap
>> along the primary and the resistance of the primary conductor increases
>> too, wouldn't it be possible to somehow relate the two in an effort to
>> measure resistance to infer inductance?
>>
>> Jeff W. Parisse
>> www.ddlabs-dot-com/tesla/
>>
>> PS Thanks Richard...
>>
>> Subject: Quick and Dirty resonance check
>>
Big snip --------------------------------------------------------------
>>Hi All -
I have found that quick and dirty resonant checks are one of the reasons
that tests, theory, calculations, etc. do not agree.
To show what I have found I have designed, built, and thoroughly tested a
small Tesla coil and made a report of the results. The report consists of
the values found in the tests and also shows the calculations and wiring
schematics I used. The report also includes a computer printout from the
JHCTES Ver 2.3 program plus other information relevant to the tests.
The testing procedure that I recommend in this report will guarantee that
your tests will agree with your calculations. The calculations can be done
on a standard computer spreadsheet and you do not need the program unless
you want automatic tuning and other features.
>>
I will send the report free to the first 25 coilers who will send me a self
addressed stamped envelope. After that the report will go into one of my books.
I was not going to post this at this time because I would like to check it
further. However, it appeared the report could be used by some coilers now.
I do not have a large coil to check the test procedure so I would be
particularly interested in having the large coil builders give it a try.
Jack Couture
10823 New Salem Point
San Diego, CA 92126