-=> Mike Ross said to Greg Mayman
 -=> about "VEHICLE LED'S" on 09-15-03  23:10.....

 MR> No it isn't of use because that isn't how to achieve a maximum AC
 MR> power transfer.

It works well at one frequency ;-)

  To get this condition we must offer a load that is a
 MR> "conjugate" of the AC source impedance. Thus if the source is
 MR> inductive and resistive in series we must supply a load that is
 MR> resistive and capacitive in parallel.

There's notyhing about that in any of my books. Maybe they did it
all the oldfashioned way, just because it worked in practice.

But that "conjugate loading" is a lot different from adding a
shunt capacitor to cancel out the series inductance.

That way, the output would start to increase as the frequency
increased towards resonance, reach a peak at resonance, then fall
off fast at higher frequencies due to the low pass filter action
of series L + shunt C.

 MR> Series capacitance won't work because it doesn't result in the
 MR> required "conjugate" load for a maximum AC power
transfer". When you
 MR> use a series capacitance it will only be possible to have maximum power
 MR> transfer at a single frequency.

Yes, that is exactly what I said.

From Greg Mayman, in beautiful Adelaide, South Australia
   "Queen City of The South"    34:55 S  138:36 E

... Power is much more easily manifested in destroying than in creating.
___ Blue Wave/386 v2.30

--- FLAME v2.0/b