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Old 19th March 2012, 10:55 AM   #2111
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Quote:
Originally Posted by padamiecki View Post
Your opinion about this waveform?
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Old 19th March 2012, 11:33 AM   #2112
sonnya is offline sonnya  Denmark
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Originally Posted by Lazy Cat View Post
Hi guys

Anyone some comments about this plot?

P.S. Fish in the scope?
Looks like on the edge ( of the sea If you ask the viking Hagar) of oscillations.

Does input cable cross outputwires?
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Last edited by sonnya; 19th March 2012 at 11:37 AM.
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Old 19th March 2012, 11:37 AM   #2113
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Nice thinking, but it's not even near hehe

This waveform is very stable, always the same (repeatable).

BTW viking Hagar not needed at this case

Last edited by Lazy Cat; 19th March 2012 at 11:41 AM.
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Old 19th March 2012, 11:39 AM   #2114
sonnya is offline sonnya  Denmark
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Ok:

1) switchemode in idle.
2) bridge rectifiers oscillating.
3) Relay coil
4) RFID reader pulse on/off
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Old 19th March 2012, 11:42 AM   #2115
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Quote:
Originally Posted by Lazy Cat View Post
Your opinion about this waveform?
the sample of moog synthetizer wave?
honestly I do not know
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Old 19th March 2012, 11:43 AM   #2116
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Quote:
Originally Posted by sonnya View Post
Ok:

1) switchemode in idle.
2) bridge rectifiers oscillating.
3) Relay coil
4) RFID reader pulse on/off
Which one will it be than?
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Old 19th March 2012, 11:47 AM   #2117
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Looks like a burst of an oscillation.
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Old 19th March 2012, 11:49 AM   #2118
sonnya is offline sonnya  Denmark
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2) Bridge rectifiers oscillating
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Old 19th March 2012, 11:54 AM   #2119
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Complete pic of the plot will explain it all, I'm sure

P.S. It's not Marlin swordfish
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Old 19th March 2012, 12:00 PM   #2120
sonnya is offline sonnya  Denmark
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The timebase and frequence.

Tells me that we are talking softstart circuit.

The oscillation represent the current (Which has a frequence of 50Hz).

You will see the current build up to certain level (PTC heating up?) and the current will start falling as we get closer to the rectified voltage the capacitor bank will settle on.
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