[Heathkit] HP-23 Mystery 6.3 volt Green Wire???

[Kim Herron]

Hi dan,
>OK, I have another mystery on this HP-23 I am modifying.
>This if for the list and for Ed if he reads this.
>I have gone nuts today trying to find the green wire from the transformer  of
>my HP-23.
>This is the wire that should go to lug #8 so as to supply 6.3  volts to the
>filaments.
>Nothing is connected now to lug #8 now.
>Now according to the paperwork I got a hold of the HP-23 and HP-23A have
>provisions for 6.3 volts and 12 volts.
>Schematic shows a green wire to lug #8 and construction manual  shows to
>connect green wire to lug #8 for 6.3 volts filament.

         Yes.  Heath actually made FOUR versions of that supply.  The power 
transformer was not the same between them.
It sounds as though you have either a HP-23B or C.  You may even have a 
PS-23 which was very similar but different again.
Look carefully at the supply and find the model number.  The later supplies 
didn't have adjustable low voltage or heater voltages.
I'm betting that's what'cha got.







>Any help with this Heathkit mystery?
>Thanks,
>Dan/N4VET
>
>
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Thanks!!

Kim Herron  W8ZV
1-616-677-3706
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