[CCTECH] ancient transistors found!

From: jpero_at_sympatico.ca <(jpero_at_sympatico.ca)>
Date: Sat Jun 8 15:13:11 2002

> > What era that transistors were used? 1960's?
> >
> > This one is way before MY TIME. :-( )
> >
> > Cheers,
> >
> > Wizard
>
> Bolt stud?? sounds like a TO36 . . looks like a big round doorknob with
> emitter and base leads in a straight line with the stud
> (case=collector).

Bolt stud is big pin, two golden solder lugs, and smaller case pin in
a "T" arranagement w/ stud and gold pins in straight line.

Yes, that what this case style you had described. The unusual case
style that I ever first saw strikes me as rather odd design
especially that welded seam. Very "russian-like" style.

> Most of that case style were PNP germanium
> transistors, used in car radio output stages, and some old two-way radio
> T-power B+ supplies. Being Ge, they usually weren't too reliable, and
> quite prone to failure.

True. I heard that germanium transistors quits functioning when too
hot even hot water before boiling point is enough. But germanium
diodes IS still in use in automotive alternators.

What would put in that certain years range when that ADY26
transistors commonly used back then when products were in production
using that ADY26 transistors? Not counting the years for those
as repair parts in production even that equipment using them is not
in production.

> Gary Hildebrand
> St. Joseph, MO

Cheers,

Wizard
Received on Sat Jun 08 2002 - 15:13:11 BST