[time-nuts] Re: +1/f of transistors

[Bob kb8tq]

Hi

As noted in many posts, 1/F noise is dependent on a number of
operating parameters. The first thing to do would be to understand
your use case. Testing under one set of conditions may not be 
useful for use in other conditions.

Bob

> On Apr 10, 2022, at 5:50 AM, Leon Pavlovic <leon.pavlovic at gmail.com> wrote:
> 
> What would be a (very) good lab setup for the 1/f noise evaluation? I'm
> talking about BJTs and JFETs.
> 
> What instrumentation and power supply are needed? How not to measure in a
> wrong way - like 1/f noise in the instrumentation or the power supply
> circuitry? Active collector/drain current sources vs pure resistive...
> 
> I'm quite familiar with the low NF measurements, so I guess the same
> practice would apply: insert your DUT, short its input side, have a
> low-noise post amp and display the noise on FFT SA?
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