-----Original Message-----
From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of=
 Olin Lathrop
Sent: Thursday, March 10, 2011 7:16 AM
To: Microcontroller discussion list - Public.
Subject: Re: [EE] Generating Nano-Scale AC voltages

Yigit Turgut wrote:
> For some boring reasons, I need to have 10^-9 AC Volts (nV) on my=20
> desktop and I am seeking ideas for implementation.
> ...
> The circuit can run from any kind of source and frequency is can vary=20
> between 1-100 Hz.

Look up something called a "resistor divider".  See attached.


While there is no problem with your circuit, I would advise caution if conn=
ected directly to the line, observing polarity where the low side is connec=
ted to neutral and the hot side connected to the 1meg resistor.  Ideally, p=
erhaps, use a transformer and adjust the resistors accordingly.

Joe


--=20
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