news@flash.UUCP (News System Admin.) (10/26/89)
In a recent discussion, a friend mentioned that the klystrons in microwave ovens can degrade (somehow) over time, putting out less power. I went and measured the output of our oven (I'd suspected it's been low for some time) and found we were getting about 250 - 300 watts out, for an oven rated to draw (under) 900 watts from the line. Do klystrons in fact degrade? Is there anything else could cause this? -- News
arnief@tekgvs.LABS.TEK.COM (Arnie Frisch) (10/26/89)
1. Getting 250 to 300 watts of RF from an oven that draws 900 watts from the line is probably par. 2. They're Magnetrons, not Klystrons. 3. They degrade with time - sloooowly! Arnold Frisch Tektronix Laboratories
kleemann@vms.macc.wisc.edu (Brad Kleemann) (10/27/89)
In article <238@flash.UUCP>, news@flash.UUCP (News System Admin.) writes... >In a recent discussion, a friend mentioned that the klystrons in microwave >ovens can degrade (somehow) over time, putting out less power. I went and >measured the output of our oven (I'd suspected it's been low for some time) >and found we were getting about 250 - 300 watts out, for an oven rated to ^^^^^^^^^^^^^^^^^^^ Interesting. How did you measure the output? >draw (under) 900 watts from the line. > >Do klystrons in fact degrade? Is there anything else could cause this? At my previous job, we had a microwave that cooked food more and more unevenly, leaving some of it frozen at times. I noticed that the door latch was a little loose. I took the thing to the bench, took it apart, tightened the latch screws, and it worked fine. Check if this may be your problem. Incidenty I never stand in front of a microwave when it is cooking. Now you know why. > -- Brad Kleemann (WB9WHI)
yahoo@unix.cis.pitt.edu (Kenneth L Moore) (10/27/89)
In article <6233@tekgvs.LABS.TEK.COM> arnief@tekgvs.LABS.TEK.COM (Arnie Frisch) writes:
==>2. They're Magnetrons, not Klystrons.
==>3. They degrade with time - sloooowly!
==>Arnold Frisch
==>Tektronix Laboratories
Unless you heat a pot of water in them like my son did, then
they degrade quickly.
--
yahoo@unix.cis.pitt.edu (Kenneth L Moore)
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ Ken @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@