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Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: North Texas
Posts: 1040
ok, so yesterday was the second day of the cowtown hamfest in Fort Worth, and I ended up buying some new toys to play with (such as a kenwood tribander, and a phone patch but also, I got a LOT of stuff for free, since no one wanted to carry them out with them, and they were "as-is"... so I used a dolley to get them to my car...
after giving most of the surfaces a good clean (so my mom would not freak out), I decided to plug the tube-based General Electric Sweep Generator (which was a freebie) into my oscilloscope and fire it up... and it still works great!!
so now i am wondering what number of things I could/should do with this large, old, but useful piece of hardware... and hope fully find someone here who might have information on the thing, as I did not find much online...
I will try to get the tubes out safely to see what they are... but since I have no experience pulling out a tube from something like this, I fear I will break it...
EDIT: I forgot to ask, since the sweep generator has a metal case, and uses a two prong cord, should I replace the power cord with a three prong, with the ground prong connected to the case?
Registered Member #540
Joined: Mon Feb 19 2007, 07:49PM
Location: MIT
Posts: 969
Tubes are not all that easy to break when pulling them out. Just pull them strait out from their sockets. If they are hard to pull out then have something over your hand when pulling it out so the tube doesn't go flying.
For the metal case, first check to see if the case is floating above ground with a low wattage 120V lamp. If it lights up then that means there is a short to the case so you should open it to see where the short is. If it doesn't light then you can ground the case.
Registered Member #96
Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4061
Why take it apart? Just because it is old doesen't mean it is no good. For certain (audio etc) applications valve equipment is fine and also is virtually indestructible under uhm, high RF field conditions.
Registered Member #902
Joined: Sun Jul 15 2007, 08:17PM
Location: North Texas
Posts: 1040
Conundrum wrote ...
Why take it apart? Just because it is old doesen't mean it is no good. For certain (audio etc) applications valve equipment is fine and also is virtually indestructible under uhm, high RF field conditions.
Regards, -A
who said anything about dismantling it? You cant see the tube names from without taking them out... in this case, which I have yet to get around to
Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
You don't say what sort of sweep generator it is. Many were designed chiefly for aligning IF transformers in superhets - 465kHz and so on. Others are more ambitious.
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spoils from a hamfest...
Just because it is old doesen't mean it is no good. For certain (audio etc) applications valve equipment is fine and also is virtually indestructible under uhm, high RF field conditions.