Take a look at the Maxim DS32KHZS 32.768kHz Temperature-Compensated Crystal Oscillator TCXO Available in 14 pin dip, needs +5 (you have), batt (you have, ground. Supplies 32,768 that you feed into pin 17 of the clock chip after removing the existing Xtal. Supposed to hold 1 min per year over the full temp range with no adjustment.
This guy says he has them in the 14 pin dip: <https://www.ebay.com/itm/DS32KHZS-32-768kHz-Temperature-Compensated-Crystal-Oscillator-TCXO-SOIC-16-USA/231767038534?epid=1801717048&hash=item35f6645a46:g:ZXgAAMXQUY1Q-BXP> Regards -----Original Message----- From: D. Resor <organli...@pacbell.net> To: 'Tom Van Baak' <t...@leapsecond.com>; 'Discussion of precise time and frequency measurement' <time-nuts@febo.com> Sent: Mon, Mar 5, 2018 10:02 am Subject: Re: [time-nuts] WWV or Net Clock controlled oscillator The unit has an external switching power supply which provides 5+ VDC. In addition there is a 24VAC transformer which provides the power for the bell solenoids. This where the AC reference is "sampled" I cannot completely cut out the AC transformer as it is essential to other operations of the DCBI. A lot to study..... _______________________________________________ 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.
