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Sprague TO-3 Tel-Ohmike
5/16/2007 2:50:36 PMRadiodoc
Guys & Gals,

Would someone have the schematic for the Sprague TO-3? Or at least may know the resistance value of the VOLTAGE adjust potentiometer.

Radiodoc
**********

5/16/2007 6:38:38 PMEdd
:Guys & Gals,

Weeeeelll I guess that Guy bit would go all right , just as long as you don't sweep up right beside me and drape your arm over my shoulder and come out with.......H i i i i i i Guuuuuyyyyy.....
...Used to know a LARGE Pvt...like very ..Too Tall Jones type of physiqueish..... in the Army, who liked to drift into the USO clubs rest room and rapidly have a candidate rushing out from the rest room in midstream.

In referencing to the pot:
Hey feller...got a "spot" on your pot ? It being the one just under the meter on the right top quadrant of the instrument.
If your unit has the part numbers designated on its casing , will the following info help you..also included is its adjunct series "brother" in the divider string.
Tech Ref:
http://img522.imageshack.us/img522/3050/voltageadjustpotfy4.jpg

73's de Edd

5/16/2007 7:26:32 PMRadiodoc
::Guys & Gals,
:
:Weeeeelll I guess that Guy bit would go all right , just as long as you don't sweep up right beside me and drape your arm over my shoulder and come out with.......H i i i i i i Guuuuuyyyyy.....
:...Used to know a LARGE Pvt...like very ..Too Tall Jones type of physiqueish..... in the Army, who liked to drift into the USO clubs rest room and rapidly have a candidate rushing out from the rest room in midstream.
:
:In referencing to the pot:
:Hey feller...got a "spot" on your pot ? It being the one just under the meter on the right top quadrant of the instrument.
:If your unit has the part numbers designated on its casing , will the following info help you..also included is its adjunct series "brother" in the divider string.
:Tech Ref:
:http://img522.imageshack.us/img522/3050/voltageadjustpotfy4.jpg
:
:73's de Edd
:

Edd,

The TO-3 doesn't have the series brother resistor. The pot had been replaced some time with a 50K 5 Watt one. It was getting way too hot. In fact I will have to wear a bandaid on my hand a few days until the burn heals. The pot has approximately 670 volts across it. Ohms law figured it should be rated considerably more than 5 Watts. Since I didn't have the schematic handy, thought someone on here could look at the schematic or know the resistance of the pot. As for the "Guys & Gals", I realize now that perhaps "Ladies & Gentlemen" would have been more appropriate.

Radiodoc
************

5/16/2007 7:35:28 PMEdd
I researcherd wrong pot, then....no contest on ID if it's that HEFTY of a unit...

73's de Edd

5/16/2007 8:13:42 PMRadiodoc
Edd,

In another post here Alan Douglas advised that the pot is a 50K Ohm at 15 Watts. Whew!! THANKS for your help.

Radiodoc
**********

:I researcherd wrong pot, then....no contest on ID if it's that HEFTY of a unit...
:
:73's de Edd

5/16/2007 6:39:36 PMAlan Douglas
:Guys & Gals,
:
:Would someone have the schematic for the Sprague TO-3? Or at least may know the resistance value of the VOLTAGE adjust potentiometer.

50k 15 watt. That's going to be very difficult to find.

5/16/2007 7:30:23 PMRadiodoc
::Guys & Gals,
::
::Would someone have the schematic for the Sprague TO-3? Or at least may know the resistance value of the VOLTAGE adjust potentiometer.
:
:50k 15 watt. That's going to be very difficult to find.

Alan,

Thanks very much. The pot had been replaced at one time and not having a schematic for the TO-3, I was not sure if the resistance was right. The pot that was installed is a 50K 5 Watt one. With approximately 670 volts across it, it gets very hot. Again thanks.

Radiodoc
**********



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