Re: DC? was: mechanical bridge rectifier

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

Original poster: "Finn Hammer by way of Terry Fritz <twftesla-at-qwest-dot-net>" <f-h-at-c.dk>



Tesla list skriver:
 >
 > Original poster: "J Dow by way of Terry Fritz <twftesla-at-qwest-dot-net>" 
<jdowphotography-at-hotmail-dot-com>
 >
 > Good evening folks
 > Recently I asked about rectifying AC on the low side of the mane
 > transformer in a TC.
 > The answers from the list were a resounding NO it can’t be dun.  So then if
 > DC is bad for transformer action why is it ok for HV TC work? The TC (pri ­
 > sec) is just a transformer.
 > Why is DC bad for one kind of transformer and not for another?

This is because the charging of the cap is a DC event, even in an AC
coil. Although the polarity changes at regular intervals in an AC coil.
Even though the current that charges the cap passes the primary of the
coil, it`s inductance is too low to have any effect at the time
constants involved at this stage.

However, as soon as the gap fires, things change. Now we have
_ringdown_. That`s AC, suited to transfer energy btwn. coils, due to
magnetic coupling.

Wonderfull!
Snip.

Cheers, Finn Hammer