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Re: Calculating Sec. Voltage
HI Rod,
What is the peak primary cap voltage, primary cap value,
secondary inductance and resonant frequency (NB - turns ratio does
*not* count)?
Malcolm
> Question: Wouldn't it be nice to know how many volts a TC will produce
> before it's actually built?
>
> I'm searching for some formulas that may give results close to actual
> values, when calculating the secondary's output voltage.
>
> For now, I've been using a silly little formula I retrieved from my old
> high school physics book which is an ideal (I mean for an "ideal"
> xformer) equation -
>
> Vs Vp Ip
> -- = -- = --
> Ns Np Is
>
> (I think the 3rd part is the right way up)...
> Anyway,
> Vs - Voltage of the secondary
> Vp - Voltage of the primary
> Ns - Number of turns of the secondary
> Np - Number of turns of the primary
>
> Rearranging -
>
> Vs = Ns x Vp
> -------
> Np
>
> To calculate the secondary voltage.
>
> Now, I've applied this formula to a known coil (Yup, the Super Model 9
> from Bill Wysock, yet again...fine coil system too I might add!)..
>
> Ok, specs -
> Ns = 800
> Np = 4.5
> Vp = 20,000v
>
> So, Vs = 800 x 20000
> -----------
> 4.5
> = 3,555,555.556 volts
>
> The coil is actually noted in the gallery (Questacon Nat. Sci. & Tech.
> Centre, Canberra) as being a 3.5 MV coil...
> Although, most of the time it's only running on about 103v on the
> primary of the xformer as apposed to 250v.
>
> Well, this formula is a little too "easy" so to speak, so does anyone
> have any formulas, preferably of the "hairy" type which one could use for
> this problem?
>
> Thanks All,
>
> Have fun..
> Rod
>