Reinforcing your first point. It is also worth noting that the sweet spot
for switching regulators is about the same frequency as the AM band. Cars
have had both switching regulators and AM radio for a while now.
On Sun, Oct 16, 2016 at 12:06 AM, Perry Sandeen via time-nuts <
time-nuts@febo.com>
On Tue, 18 Oct 2016 11:27:05 +0200, you wrote:
>On Fri, 14 Oct 2016 22:25:55 -0500
>David wrote:
>
>> I have done this and it works great; the breakpoint between the
>> chopper amplifier and the low noise amplifier can be adjusted to
>> combine the wideband noise from the
On Fri, 14 Oct 2016 22:25:55 -0500
David wrote:
> I have done this and it works great; the breakpoint between the
> chopper amplifier and the low noise amplifier can be adjusted to
> combine the wideband noise from the low noise amplifier and the 1/f
> noise and drift of
List,
Two Points
1. Switching regulator power supplies are here to stay and will replace most
transformer types as the are cheaper, smaller, and more energy efficient. They
have improved to the point of being used in medical equipment for patient
monitoring equipment that picks up milli-volt
I have done this and it works great; the breakpoint between the
chopper amplifier and the low noise amplifier can be adjusted to
combine the wideband noise from the low noise amplifier and the 1/f
noise and drift of the chopper amplifier.
Jim Williams wrote a couple of different application notes
On Fri, 14 Oct 2016 12:00:08 -0600
"Cube Central" wrote:
> How would one go about testing power supplies and seeing how noisy they
> are? I have the standard suite of tools, an oscilloscope and a little
> (dangerous) know-how. I am just not sure what to look for or how