[sdiy] Analog Delay Lines

[Tony Clark]

> Afaik, the voltage representing the input signal is placed on the drum by
> the "record" wiper, then discharged and converted to the output signal by
> the "playback" wiper.  What I don't understand is why doesn't the can
> conduct making the electrostatic charge equal all over.  Any ideas??

   Perhaps the can is grounded?  Depending on the electrical properties 
of the oil inside, I would guess that it dampens the electrostatic field 
and keeps it localized to the rotating disks.  This must be why it's used 
on high power transformer caps.

   Tony

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