RE: POPULAR ELECTRONICS, Jul. 1964, p29, 250KV TESLA COIL [voltage gain]

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "alfred erpel" <alfred@xxxxxxxxx>



[stuff snipped]

Bart, Antonio,

	I see where I was thinking wrongly.  Thanks.

Regards,

Al Erpel



>Original poster: "Barton B. Anderson" <bartb@xxxxxxxxxxxxxxxx>
>
>But Al,
>
>Your two coils don't have the same geometry so they don't meet the
requirement. (150mm and 300mm?).
>
>Take care,
>Bart
>


>>Original poster: "alfred erpel" <alfred@xxxxxxxxx>
>>
>>
>>[edits for clarity]
>>
>>
>>Take a helical wound 150mm diameter primary with 15 turns positioned
>>around a helical wound 75mm secondary with 1500 turns.
>>
>>This will have a different square root of ratio of inductances from a
>>helical wound 300mm diameter primary with 15 turns wound positioned
>>around the same 75mm secondary with 1500 turns.
>>
>>These two conditions meet your geometry and turns requirement, but
>>because the inductances of the two primaries are different the [square
>>root of ratio of secondary/primary] gains ratio will be different.
>>What is missing from your explanation?
>>
>>Regards,
>>
>>Al Erpel