40 to 100 microF electrolytic will work. On Mon, 30 Sep 2019 12:21:06 +1000, Neville Michie wrote:
>If you have a square wave at .5PPS and you connect a large series capacitor to >the coil of a quartz clock >(less battery) you get alternating seconds pulses drive to an analogue dial. >50 ohms will easily drive the about 1k coil. >Cheap quartz clocks make good slaves. >cheers, >Neville Michie >> On 29 Sep 2019, at 22:56, Gregory Beat via time-nuts >> <[email protected]> wrote: >> >> A new resident arrived at the GTime CaveG this weekend, the >> HP/Symmetricom 58503B. Just the plain front panel (4 LEDs) model, without Option 1 (VFD clock display). >> Acquired in USA, cheaper than current Asian exporter. >> https://accusrc.com/uploads/datasheets/4975_58503b.pdf >> >> Supposedly stored in a closet since 2010 (verified by its diagnostic logs), >> the unit only had 2,000 hours of operation. >> Today, it happily has a GPS Lock and is currently Gre-learningG where >> the 1 PPS and 10 MHz outputs wandered (taming Lazarus). >> G >> One surprise, it has Option 2 (1PP2S) installed on its Rear Panel. >> >> Option 002 : 1 PP2S (One-Pulse-Per-Two-Seconds) connector for outputting a >> pulse every other second, synchronized to the even seconds in GPS time. >> Pulses occur on even-numbered seconds (i.e., 2 seconds, 4 seconds, etc.). >> === >> QUESTION: >> What Specific Applications would use this 1PP2S output regularly?? >> >> greg >> >> Sent from iPhone 6s >> _______________________________________________ >> 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. Bill Beam NL7F
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