Corby A time constant is calculated from R and C.
If 50 milliseconds is the correct number, R for 5 mfd is 10,000 ohms. You could use an aluminum electrolytic for the capacitor. Can you tell us where the 50 ms number came from? Regards, Bill Hawkins -----Original Message----- From: time-nuts [mailto:[email protected]] On Behalf Of [email protected] Sent: Saturday, February 24, 2018 5:45 PM To: [email protected] Subject: [time-nuts] Replacement A9 boards for the HP 5065A Hi, I'm working to make some replacement A9 boards for the HP 5065A to the new style schematic. Will share the Gerber file when done. The integrator capacitor is a 1986 vintage TRW 5.0ufd 50V 10% .42"DX1.0"L axial. Of course it has an HP part number and no manufactures #. Any guess as to what type it is? Polycarbonate, polypropylene, ??????? Just wanting to find a good modern replacement for its use. (Integrator with a 50ms time constant.) Thanks, Corby _______________________________________________ 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. _______________________________________________ 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.
