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Article #914

Re: An unusual Oscilloscope phenomenon

#914
From: John Larkin
Date: Mon, 29 Jun 2009 01:03
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On Sun, 28 Jun 2009 12:45:41 -0700 (PDT), Richard Henry
<pomerado@hotmail.com> wrote:

>On Jun 24, 7:18�pm, "David L. Jones" <altz...@gmail.com> wrote:
>> Check out a rather unusual phenomenon you can see on your oscilloscope in my
>> latest blog (#14):http://www.alternatezone.com/eevblog/
>> See if you can get it to happen on your scope!
>> I'll offer a free subscription to my blog for the best screen shot posted
>> :->
>>
>> Oh, and the probe doesn't have to be shorted either.
>>
>> Have fun.
>> Dave.
>> --
>> ================================================
>> Check out my Electronics Engineering Video Blog & Podcast:http://www.alternatezone.com/eevblog/
>
>His schematic of the scope probe and scope input are oversimplified to
>the point of incorrectness.  Also, he ignored the low-pass nature of
>the oscilloscope input, which might contribute to the clean
>"sinusoidal" waveform.

Scope vertical amps don't ring.

John
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From: John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com>
Newsgroups: sci.electronics.design,aus.electronics
Subject: Re: An unusual Oscilloscope phenomenon
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Date: Sun, 28 Jun 2009 18:03:59 -0700