Re: DC Reso Charging

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

Original poster: "Crow Leader by way of Terry Fritz <teslalist-at-qwest-dot-net>" <tesla-at-lists.symmetric-dot-net>

It's likely your meter did not supply enough voltage to switch on the
internal diodes in the flyback.

KEN
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, May 25, 2003 4:50 PM
Subject: DC Reso Charging


 > Original poster: "Jolyon Vater Cox by way of Terry Fritz
<teslalist-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>
 >
 > Dear List,
 > Would it be possible to implement DC Resonant Charging for a TC with a
dual
 > ignition-coil power supply, by using the secondaries of a couple of the
 > more modern flyback transformers (the cylindrical models with integral
 > rectification) as charging chokes? Using flybacks in this way, would it
not
 > be possible to integrate all the rectifiers, charging chokes plus de-Q-ing
 > diodes into two small units?
 >
 > BTW, I did once try to measure resistance of the HT winding of a flyback
 > -it is so high that practically impossible to read on a normal multimeter,
 > so the current flowing through it in normal operation must be very low -a
 > milliamp or two at most.
 >
 > I would imagine the inductance of the secondary winding of a flyback
 > transformer must be fairly high although the Q might not be
 > -due to high resistance of the winding might although this might not be a
 > bad thing considering the de-Q-ing diode normally included in DC reso
 > setups/ what do you think?.
 >
 > Is it at all likely the current from the ignition coil will damage the
 > flyback winding when it is used in this way, and would the total PIV of
all
 > the diodes in diode-split winding be likely to be sufficient to withstand
 > the reverse voltage?
 >
 > If it is possible for a flyback secondary to provide the services of a
high
 > inductance coil capable of withstanding high voltages
 > with the bonus of the diodes to provide rectification and de-Q-ing, are
 > there likely to be any other problems which could prevent these coils
being
 > successfully used as charging chokes in  small DC-reso charging schemes,
 > for example, in mini TCs?
 >
 >
 >