🚀 go-pugleaf

That will do me.
Great to have you on board,thanks again Frank.
>From A.T.

Franc Zabkar wrote:
> On 16 May 2005 05:20:33 -0700, "alitonto" <alitonto@hotmail.com> put
> finger to keyboard and composed:
>
> >Hello Frank,
> >That's the direction I was thinking but wasn't sure if anything in
> >particular needed to be observed. For example the schematics I
obtained
> >from DSE, thnks for your previous reply, indicate that the volts to
the
> >base of the HOT needs to be 0.34; therefore would I be correct in
> >thinking that the existing circuit board will produce that if I
select
> >a close enough match for the driver transformer?
> >Cheers
> >A.T.
>
> AFAICS, any 12V HDT that is designed to drive an NPN transistor
should
> be suitable. That's just about all of them. One caveat may be that
> some HOTs have a lower hfe than others, which would mean they would
> require more base current. A symptom of low drive would be a hot HOT.
> Just to be safe, I'd run the set for a minute or so and then check
the
> HOT temperature.
>
> >Franc Zabkar wrote:
> >> On 15 May 2005 06:15:10 -0700, "alitonto" <alitonto@hotmail.com>
put
> >> finger to keyboard and composed:
> >>
> >> >I have  Digitor 12 volt TV Model G7200 year 1993 from Dick Smith
> >> >Electronics for which the H.D.Transformer is no longer available
> >from
> >> >spare parts. (Checked with DSE).
> >> >I am thinking what specs to look for if I was to find a spare
part
> >in
> >> >my parts box.
> >> >Would this be possible at all?
> >> >It drives the HOT which is a BU407 and the chip on the board is
an
> >> >LA7680 where pin 27 supplies the signal.
> >> >Any expertize here will be welcome.
> >> >Thks
> >> >A.T.
> >>
> >> Try adapting a transformer from a current model 12V TV. I would
> >> imagine they would be mechanically different but electrically
similar
> >> (same B+, same frequency, similar output).
> >>
> >>
> >> - Franc Zabkar
> >> --
> >> Please remove one 's' from my address when replying by email.
>
>
> - Franc Zabkar
> -- 
> Please remove one 's' from my address when replying by email.