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Re: along those lines
Tesla List wrote:
>
> Subscriber: s002cgs-at-discover.wright.edu Tue Jan 28 23:04:15 1997
> Date: Tue, 28 Jan 1997 16:34:35 -0500
> From: CURTIS SANDOVAL <s002cgs-at-discover.wright.edu>
> To: tesla-at-pupman-dot-com
> Subject: along those lines
>
> Okay, if very low frequencies are not feasible or if you cannot match
> frequencies of primary to secondary, is it possible to use secondary
> harmonics (or lower)?? Like, if i had a 300 MHz primary would it couple
> well with a 150 MHz secondary? Seems like as long as you are in phase
> you should experience no power loss... Is that very far off?
>
> cgs
Curtis,
You can couple at harmonics... however, you wouldn't want to use a
primary operating at twice the secondary frequency since the you'd get
two voltage peaks - one at the top of the coil, and the other in the
middle. The latter one would destroy the coil.
Running the primary at half the secondary will work (sort-of), but not
nearly as well as running at or near the same frequency. The secondary
does not "ring up" properly since every other half cycle the primary and
secondary will be "out of phase" and secondary energy will couple back
into the primary. As a result the secondary energy doesn't build up as
it does in the case where the frequencies are the same. This is one of
those cases where the transient situation is markedly different than the
steady-state one.
Safe coilin' to you!
-- Bert --