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Re: Measuring the output power


 

> 1N60 diodes as a peak detector.

Germainium diode voltage drop drifts with temperature, that's why
we don't use them anymore.

Use a decent Shottky diode with ultra low capacitance like a BAS70
with only 1pf.

They will be good for measuring down to 1mw with a simple power meter.

For sub 1mw levels you can use add some forward DC bias to the device
and recalibrate.

You'll then get a stable 0.35v drop like a Germanium that is more constant
with temperature.

Anyone remember the old AM broadcast receivers from the 60's/70's ?

On a hot day the those old Germanium trannys wilted and lost the plot.

- Andy -


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