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Article #1023

Re: An unusual Oscilloscope phenomenon

#1023
From: Joerg
Date: Thu, 25 Jun 2009 20:40
51 lines
2850 bytes
Spehro Pefhany wrote:
> On Thu, 25 Jun 2009 19:38:11 +0800, "Dennis" <dennis@nowhere.com>
> wrote:
> 
>> "Spehro Pefhany" <speffSNIP@interlogDOTyou.knowwhat> wrote in message 
>> news:psm645hcft91v992v67lovmj2fmp4ocr9d@4ax.com...
>>> On Thu, 25 Jun 2009 03:49:50 +0100, Dirk Bruere at NeoPax
>>> <dirk.bruere@gmail.com> wrote:
>>>
>>>> David L. Jones 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.
>>>> Got it immediately, because I once worked in lab that had cheap plastic
>>>> chairs that generated 1cm sparks when you stood up!
>>> Back in the old days, they used to generate 1/2" sparks.
>>>
>> Nasty stuff that Bakelite. 
> 
> Goes nicely with wood cases: 
> 
> http://ip.co.za/shop/images/wheatstone.jpg
> http://www.surplussales.com/Images/Equipment/TestEquipment/Leeds-Northrup/eqp-wbm-119828/eqp-wbm-119828_lg.jpg
> 

Bad focus but shows the concept, when I was a teenager I made almost 
everything in wood, nicely polished, several layers of laquer, some more 
polishing:

http://www.analogconsultants.com/ng/images/oak2.jpg

I usually spent a lot more time on the enclosures than on the 
electronics but the stuff is still working.

-- 
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.
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From: Joerg <invalid@invalid.invalid>
Newsgroups: sci.electronics.design,aus.electronics
Subject: Re: An unusual Oscilloscope phenomenon
Date: Thu, 25 Jun 2009 13:40:20 -0700
Organization: Consultant
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