Re: LM317LZ Regulator Circuit on ProgRock
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Thanks for all the inputs.
3.73V & 5.20V is what I ended up with, operating conditions, I'm satisfied.
No, my meter(s) aren't out of calibration...they agree on the measurements.
On Sun, Sep 24, 2017 at 5:50 AM, Hans Summers <hans.summers@...>
Hi Alan, all
The LM317 components were chosen to produce a "3.3V" voltage somewhat on the high side, because it helps get a little more power output out of the Ultimate3S PA circuit.
In the QCX transceiver kit the "3.3V" for the Si5351A comes from two 1N4148 in series to 5V! A little approximate... but it does work just fine!
73 Hans G0UPL
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