Hi Bob.

30-Nov-03 10:16:04, Bob Lawrence wrote to Jasen Betts


 JB>> a transistor with the base drive not shown and the collector and
 JB>> emitter not labeled, pretty much how you'd use on of thise ic
 JB>> based DC-DC converters to drop a voltage. ( WWWW is an inductor )

 BL> ROFL! I thought WWWWWW was a resistor! I won't even ask you what
 BL> the ~T~ with a hat on, is. Dr Who's Tardis?

it's  part of a  diode...

When I post crap like that in ELECTRONICS people seem to understand me mostly
and now an engineer cant figure out my doodles. I guess ascii schematics are
a sort of foreign languageor mayne I'm talking bullshit and people just agree
to not look like a fool (ala Emperor's New Clothers).  OTOH I probably could
have drawn it better.

The diagram I saw afew years back said basically ... take the high voltage
and run it through some fancy switching regualtor chip then through an
inductor to the device to be powered,

stick a reverse biased diode from ground to the output of the regulator
(input of the inductor). and a capacitor across the output of the inductor.

so the regulator switches the "12V" on and off to maintain approx 6.30v in
the capacitor...

it seemed to me that something like that should be atleast 70% efficient...
given a decent inductor...

 BL> You still didn't tell me what it's meant to be, if it isn't a
 BL> series regulator with the good bits missing.

Yeah, there's a number of similarities.

 -=> Bye <=-

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