Body
I stated that the "condenser" value was .026mfd "NOT" .026uf
On 3/19/2018 9:22 PM, [email protected] [EVGRAY] wrote:
>
> The output can be designed to fit whatever voltage and current (and
> power) that is needed. Of course some physical limits exist depending
> on how good materials are available. Less capacitance gives higher
> impedance which means higher voltage and power but lasting for a
> shorter period of time. This is with the initial magnetic energy held
> constant. The flyback pulse is a half period of a full oscillation.
>
> Here are some values of the inductance of the primary coil depending
> on how long the cycle time is with a 26nF = .026uF capacitor:
>
> The length of the arc can give a clue of the output voltage. But then
> we have to know the windings ratio between the primary and secondary
> coils to be able to calculate the inductance of the coils.
>
> Regards
> Ole
>
>
>
> ---In [email protected], <nwootan@...> wrote :
>
> At the time that I worked on these "beast",(1956-63) I did not have a
> LCR meter! For $17 bucks on EBay you can buy one and measure it!
>
>
> On 3/19/2018 8:02 PM, onielsen@... <mailto:onielsen@...> [EVGRAY] wrote:
>
>> Hi Norman,
>>
>> At least one more parameter is needed for such a calculation. If
>> knowing the capacitance and the time of the pulse or perhaps the
>> energy of the pulse the inductance can be calculated.
>>
>> Regards
>> Ole
>>
>>
>>
>> ---In [email protected] <mailto:[email protected]>,
>> <nwootan@...> <mailto:nwootan@...> wrote :
>>
>> The .026 mfd condenser was a perfect "L/C" match so do your math
>> and solve the impedance of the iron core coil!
>>
>>
>> On 3/19/2018 7:12 PM, 'S.friedrich' s.friedrich@...
>> <mailto:s.friedrich@...> [EVGRAY] wrote:
>>
>>> Hello Norm, that means this vote could not reach with any
>>> other LC!?!. For me that seems to be an ignition coil with
>>> breaker contact like the old Vw beetle. But this capacitor
>>> is very small, how big was the inductance of the coil in Henry?
>>>
>>>
>>> Von Samsung Mobile gesendet
>>>
>>>
>>> -------- Ursprüngliche Nachricht --------
>>> Von: "Norman Wootan nwootan@... <mailto:nwootan@...> [EVGRAY]"
>>> Datum:20.03.2018 01:02 (GMT+01:00)
>>> An: [email protected] <mailto:[email protected]>
>>> Betreff: Re: [EVGRAY] Sven, this is old style 3 pole magneto
>>> coils for Outboard Marine outboards!
>>>
>>> Sven, this 3 pole coil design was used for many years by
>>> Outboard Marine Corp 40s up to the 70s in the two cylinder
>>> magnetos. I had a magneto test bench where I could
>>> experiment with the careful timing adjustments of the
>>> breaker points (before breakerless solid state
>>> commutation). by careful adjustment of breaker gap/timing
>>> you could get magneto operating at peak of resonant curve in
>>> the "Ultra high Q" region! At idle, (300 RPM) a very well
>>> tuned magneto of this design would yield a good one inch
>>> bright blue arc. The condenser for this type of coil was
>>> .026mfd which was a "perfect match" to the impedance of the
>>> iron core coil. I had various values of condensers
>>> (capacitors) but only the proper value would yield maximum
>>> performance!
>>>
>>>
>>> On 3/19/2018 6:02 PM, Norman Wootan nwootan@...
>>> <mailto:nwootan@...> [EVGRAY] wrote:
>>>> https://m.ebay.com/itm/Ignition-Coil-for-Some-Early-Model-Johnson-Evinrude-2-Cylinder-Replaces-584477-/220888888795
>>>>
>>>> Sent from Yahoo Mail on Android
>>>> <https://overview.mail.yahoo.com/mobile/?.src=Android>
>>>
>>
>
>