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RetroCalculators (November 30, 1999 at 12:00 am)
Yes the tube is a resistor, just as you guessed. BobL provided me with a basic circuit diagram, which I posted on the site. I really appreciate your suggestions! thanks again
RetroCalculators (November 30, 1999 at 12:00 am)
Thanks! Yes you are right about the regulator - they call it a 'governor' but the concept is exactly right - it keeps the rpm steady.
My final conclusion is that it seems there is a short circuit within the brass rectangular cube (with 3 wires going in - perhaps a transformer?) causing the motor spin always. I couldn't easily get inside the brass cube, but I did isolote one wire and it seemed to 'solve' the problem.
HifiCentret (November 30, 1999 at 12:00 am)
Took a look at your site. Images from inside are not very clear. Too close to see the meaning if you understand. A greather overview would help (click on a picture to see a nice big one etc.). But the "tube" thing to me looks more like an old style high power resistor.
HifiCentret (November 30, 1999 at 12:00 am)
Without knowing about the specific calc. But just some thoughts. What's the purpose of the spinning contact on the "flywheel"? It looks like the regulator also found on some cassette recorders. When motor reaches a certain RPM power is cut and so it spins at a certain speed. Don't know if anything has been done originally to reduce the unavoidable sparking but a small appropriate capacitor parallel with the switch should remove or heavily reduce sparking and prolong life if the switch.
rregister (November 30, 1999 at 12:00 am)
Hello citroen2cv, sorry about the spoken english (just mumbling on this video).
I'm having a problem with the electrical wiring of this Friden C10. I posted some questions on a Friden related yahoo group, and this video is to show them the issue. (You can see more deatails at RetroCalculators/Friden.aspx) Best Regards
-rich
citroen2cv (November 30, 1999 at 12:00 am)
Thanks. I dont't understand spoken English quite well, but reading your text comment I can understand your video with no problem. A good idea!
rregister (November 30, 1999 at 12:00 am)
Temporary video
On the video you can see the continuous spinning and sparking. And, at the very end of the video, you can see the stepped gears performing an add -- which works properly.
(Please fogive the poor lighting) |
