Re: [volt-nuts] Fwd: Old resistors

2013-07-30 Thread Marvin Gozum

These look like resistance demonstrators for physics labs; slide
potentiometers.  Those devices were made very hardy back then, and
while they can easily be replaced by a precision bournes pot or a
used Tegam resistance box, you have it why not use it?

Just make sure the contacts are clean and be wary with the conductors
exposed, its a shock hazard.  Given the printed rating its rated for
425 Watts, when it was new.

At 05:03 PM 7/28/2013, Joseph Gray wrote:

I know someone who has several of these old style resistors. Can anyone
tell me anything about them? Are they of any use?

https://dl.dropboxusercontent.com/u/19599147/Resistor%20-%20side.jpg

https://dl.dropboxusercontent.com/u/19599147/Resistor%20-%20front.jpg

Joe Gray
W5JG
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Re: [volt-nuts] Fwd: Old resistors

2013-07-28 Thread Didier Juges
They can be useful to test power supplies, at least the lower value ones. This 
one looks fairly high value (small wire) so probably useless unless you have a 
museum.

Didier KO4BB

Joseph Gray jg...@zianet.com wrote:
I know someone who has several of these old style resistors. Can anyone
tell me anything about them? Are they of any use?

https://dl.dropboxusercontent.com/u/19599147/Resistor%20-%20side.jpg

https://dl.dropboxusercontent.com/u/19599147/Resistor%20-%20front.jpg

Joe Gray
W5JG
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