Hi My advice: Pull out the nicads and run the device on a normal UPS if you actually need power backup. When the UPS bites the dust … replace it. Much easier than keeping the batteries in these devices happy.
Bob > On Apr 24, 2019, at 11:53 AM, Roy Thistle <[email protected]> > wrote: > > Hi Time Nuts: > > I've been lurking for a while now... reading the posts. > > I have just got an HP 105B, which is in good shape, and has a new/replaced > NiCad battery pack, and was calibrated against a rubidium oscillator > (standard?). > > NiCads don't like me... does anyone have recommendations/commiserations, > concerning their care. > > Best regards and wishes. > > Roy > > ________________________________ > From: time-nuts <[email protected]> on behalf of > [email protected] <[email protected]> > Sent: April 24, 2019 12:00:02 PM > To: [email protected] > Subject: time-nuts Digest, Vol 177, Issue 29 > > Send time-nuts mailing list submissions to > [email protected] > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > or, via email, send a message with subject or body 'help' to > [email protected] > > You can reach the person managing the list at > [email protected] > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of time-nuts digest..." > > > Today's Topics: > > 1. OSC value with Lady Heather (Giuseppe Marullo) > 2. Re: Z3801 Power Supply Schematic (RICHARD GOLDING) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 24 Apr 2019 08:51:44 +0200 > From: Giuseppe Marullo <[email protected]> > To: [email protected] > Subject: [time-nuts] OSC value with Lady Heather > Message-ID: <[email protected]> > Content-Type: text/plain; charset=utf-8; format=flowed > > Is it possible to display the actual OSC value instead of ppt? I tried > /tx but surely I am doing something wrong. > > Yes, I am European, lol. > > TIA. > > Giuseppe Marullo > IW2JWW - JN45RQ > > > > > > ------------------------------ > > Message: 2 > Date: Wed, 24 Apr 2019 14:46:06 +0000 (UTC) > From: RICHARD GOLDING <[email protected]> > To: [email protected] > Subject: Re: [time-nuts] Z3801 Power Supply Schematic > Message-ID: <[email protected]> > Content-Type: text/plain; charset=UTF-8 > > Many thanks to those who took the trouble to send me schematics of the Z3801a > PSU. > I'm pleased to report that, using, the schematic, I was able to trace and fix > the fault and that GPS lock led is glowing again. > The problem was a faulty regulator IC (U2 LM317) that had decided to produce > 1.8V instead of 2.5V, which resulted in the PSU thinking that the input > supply voltage was out of range. > It does seem a very complicated circuit for what could be straightforward > voltage window comparator. i.e. 24R's, 8 Diodes, 3 regulators, a comparator > and logic IC + a handful of Mosfets! > Thanks again for those that helped. > 73 Richard, G3VZG > ? ?? > > ------------------------------ > > Subject: Digest Footer > > _______________________________________________ > time-nuts mailing list > [email protected] > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > > > ------------------------------ > > End of time-nuts Digest, Vol 177, Issue 29 > ****************************************** > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
