[time-nuts] Totally unrelated, but..

[Joe Leikhim]

Could the low noise parts actually be counterfeit, relabeled as such?

Is the circuit the regulator feeds sensitive to a narrow band of voltage 
that the "good regulator" is outside of?

Try replacing the regulator with a battery supply and resistor divider 
to attain the working voltage. Move the voltage around. A good 
potentiometer and stiff filter capacitors are recommended so as not to 
introduce "pot noise".

Is something corrupting your test procedure?  I had a circuit that 
misbehaved due to floating logic pins reacting to static electricity on 
the work bench. Another time a diode was photosensitive.



-- 
Joe Leikhim


Leikhim and Associates

Communications Consultants

Oviedo, Florida

JLeikhim at Leikhim.com

407-982-0446

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