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Article #538Re: How can I match a horizontal driver transformer.
From: alitonto
Date: Mon, 16 May 2005 12:20
Date: Mon, 16 May 2005 12:20
37 lines
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2557 bytes
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. 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.
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