-------- In message <[email protected]>, Adrian writes: >Keep in mind that potentiometer R6 is one of the key components of the >C-field circuit. >Together with R8 and R12, it defines the reference voltage to Q6A/B. >The tempco of that wire-wound potentiometer can certainly not be neglected.
Absolutely not, it's clearly part of the picture, but something has 10x the tempco of that one right now. >I would suggest to check the C-field temperature dependency with an >external precision current source feeding the C-coil directly. That's what I'm doing right now: C-field driven by Fluke 732A through 2.5k resistor. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [email protected] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ 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.
