Smitty Two wrote in message
news
In article ,
"Arfa Daily" wrote:

"Smitty Two" wrote in message
news
Please tell me whether this is an inverter or a bridge rectifier, if
you
recognize it out of circuit context.

http://members.cox.net/prestwich/51.jpg

Selenium stack bridge, by the looks of it. Equipment it's in ?

Arfa

Ancient European slide projector with rotary carousel. Trying to help a
friend get the thing going again, via email since he lives in another
city.

Problem with it is that this motor:

http://members.cox.net/prestwich/52.jpg

turns very slowly.

It didn't make sense to me that a rectifier would be fed by a motor
winding, but there you go. So now it seems the motor is 240, but there's
a secondary winding in there putting out about 17, and he's getting
about 12 VDC out of the bridge, so that part seems OK now.

Is there anything on that type (shaded pole?) of motor to fix, or is it
an R & R job? (remove and replace)


Combined motor and "transformer" very common for "Dansette" type record
players of the Selenium rectifier era. When higher power amps came in then
they had to split apart.



--
Diverse Devices, Southampton, England
electronic hints and repair briefs , schematics/manuals list on
http://home.graffiti.net/diverse:graffiti.net/