Re: Flyback Driver PCBs 2 free flybacks left

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Jan Wagner <jwagner-at-cc.hut.fi> 


On Tue, 20 Apr 2004, Tesla list wrote:
 > Original poster: Brett Miller <brmtesla2-at-yahoo-dot-com>
 >
 > Yeah, it's a common misconception based on people
 > taking apart modern monitors and TV's and assuming
 > that the ones with a built in rectifier are all one
 > can come by now.  With a little scrounging and luck
 > you can find old B/W TV's and Monitors, plus of course
 > the current sources Dan mentioned...another one is
 > Information Unlimited.

Besides, with an extensive hacksaw session, you can get down to some wires
and manually short out most diodes from those modern TV flybacks.

For example, saw off the entire side where the adjustment pots are, a few
mm beyond the ceramic plate. Should be a couple of heavier gauge wires /
pins appearing then. Use a DMM to check diode forward voltages on those
pins. With a bit of creativity and luck you can figure out how the diodes
are connected, how they are pointing, and where to solder shorting wires.
The HV AC output is best taken from lowest and highest shorted pins. It's
not optimal (maximum HV out) though.

cheers,
  - Jan

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  Helsinki University of Technology
  Dept. of Electrical and Communications Engineering