Luciano wrote:
about the C field ten turn pot you write is a low TC pot. Normally a good Vishay pot is 20 PPM/C, This is in conflict with the 1PPM resistors ad voltage reference.
In the schematic Corby posted, the potentiometer (used as a variable resistor) makes up a very small part of the total resistance of the series string, so the overall tempco is dominated by the tempcos of the fixed resistors (2.4k to 4.4k 1ppm/ C, depending on trim). The pot will increase the overall tempco a little bit, but not anywhere near 20ppm.
Best regards, Charles _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
