Dr;
I have from the scrap and in repair a old Kenwood TL922 amplifier.
I will do some demonstration and technical test for a school educational
=
object in electronics.
But I only have obtained one old and used 3-500Z tube.
Question is can I made some modifications to use this old TL922 with =
only one 3-500Z tube. =20
I see in first order that the filaments of both 3-500z tubes are =
originally supplied in series with a 12 VAC transformer.
That means in first place I already have to change the filament =
transformer into one of 5 VAC.
But what you think about the rest of the RF-circuit should I have to =
change also many of the values of the PI-filter network and so on.
I really appreciate to receive your ideas around this subject and of it
=
is usefull to do sutch modification.
Regards Jean OP4F.
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