Just a little note : When you wideband amp oscillates at 200KHz and you dont know why - diyAudio
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Old 31st July 2003, 08:42 AM   #1
sonnya is offline sonnya  Denmark
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Angry Just a little note : When you wideband amp oscillates at 200KHz and you dont know why

It will not dissappear and everything else behaves well!?!?!?!?

Start Turn off you METCAL solder station! AAARRRRRRRRGGGGHHHHH ....

I have used a whole day on this!!!!
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Old 31st July 2003, 11:20 AM   #2
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Any idea why????

My solder/desolder station puts some really nasty stuff on the AC line. You ought to see what it does to a circuit without good regulation.

Jocko
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Old 31st July 2003, 12:22 PM   #3
sonnya is offline sonnya  Denmark
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The metcal works by generating a HF in to a coil mounted in the soldertip the metal then generates heat at a very precise temperature..

For the same reason the cable to the solder tip is some RG-type coaxial cable....

Maybe a defect in the screen...
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Old 1st August 2003, 12:36 PM   #4
subwo1 is offline subwo1  United States
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Sounds kike inductive heating of the tip.
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Old 1st August 2003, 01:13 PM   #5
sonnya is offline sonnya  Denmark
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Yes that's right! It is a pretty good solder station....
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Old 1st August 2003, 01:36 PM   #6
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Default this belongs in the "Engineering Humor" section

like the guy who had to get a project done, working at 3:00 a.m. with the soldering iron placed on the schematic rather than the PCB.
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Old 1st August 2003, 06:08 PM   #7
PMA is offline PMA  Europe
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Sonny,

could you describe your problem a little bit more exactly
You can send an e-mail.

Cheers, Pavel
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