Bob, I need some education. For a low-pass filter I think series L and shunt C. For two inductors that normally means 2-3 capacitors. If you use only one shunt capacitor is the second L in series with it (as a harmonic trap)? Can you point me to a design tool (or equation set) somewhere that shows how to choose values best to match the impedances?
thanks, Bob LaJeunesse >________________________________ > From: Bob Camp <[email protected]> >To: Discussion of precise time and frequency measurement <[email protected]> >Sent: Friday, August 9, 2013 4:57 PM >Subject: Re: [time-nuts] Modified Extron DA [WAS: Rb video] > > >I still think that a distribution amp based on logic ic's is cheaper / simpler >/ lower power / higher performance. A pair of NC7SZ125's will dump 20 dbm into >50 ohms all day long running at 5.5 volts. Good isolation as well. Do the >lowpass filter right and the harmonics are not an issue. Two coils / one cap >plus dc blocking does it quite nicely. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
