27 Dec 2002, 08:20, JIM HOLSONBACK (1:123/140), wrote to JASEN BETTS:

Hi JIM.

 JH> Hello, Jasen.  Thanks for responding.

.................

 JH> Transformer still OK - has 15-0-15 VAC at the secondary.

................

 JH> I'll post diagram later.  There are two small parts there which 
 JH> are clearly cooked.  The bulb think looks to be OK.  The secondary 
 JH> side just has those two small parts (now blown), the bulb thing, and a 
 JH> 4000 mfd capacitor.

I'm curious also!  There was the 0Z2, "cold cathode rectifier",
very common in old car radios, but all the ones I ever came across were in
metal cans, and I never saw the insides of one.  Without the big octal base
and metal cover, it would be 'close' to the size you describe.

I've never seen a 'charger' with a capacitor, but since this thing began
life as a 'car adapter', that would be a HUGH capacitor for something that
old, and would go along with the theory of it being only a half-wave
rectifier circuit.  

OTOH, that 15-0-15 transformer is also a strange find, makes me wonder if
the tube was part of a 'doubler circuit', which there is no apparent need
for.  

Then again, a 15-0-15 would be perfect for a bridge rectifier, those two
"cooked things" could have been the diodes, and the bulb just a
thermal circuit breaker.

Anxious to see what connects where!   :-)


     Good luck...  M.

--- Msged/386 TE 06 (pre)