Hi, Anyone know what the power requirements (DC current) for the 48V and 24V nominal HP Z3805A GPS receivers are. Cheers, Corby

   There are at least three different versions of power supplies for

Greetings to the Group, There are at least three different versions of power supplies for the Z3801A, each with different input voltage requirements. The required voltage for each unit can be found on the back of the chassis, in very small letters, near the power plug. I strongly recommend not using a current limited power supply as the peak start-up current will probably shut the power supply down, especially if the Z3801A has been unpowered for some time. A surplus transformer, two diodes, and an electrolytic capacitor are all that is needed. It will fit nicely inside the box. Enjoy. 73 de Lon, K5JV 281-795-1335 On Wed, Jan 17, 2024 at 10:32 PM cdelect--- via time-nuts < time-nuts@lists.febo.com> wrote: > Hi, Anyone know what the power requirements (DC current) for the 48V and > 24V nominal HP Z3805A GPS receivers are. Cheers, > Corby > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com >

Corby, You can find the complete user manual with a quick Google search. Here's the power requirements from the manual: Power Requirements DC Power: +27 Vdc nominal (19 Vdc ± 0.5 Vdc to 30 Vdc ± 0.5 Vdc operating range). Greater than 23 Vdc ± 0.5 Vdc starting. -54 Vdc nominal (-60 Vdc ± 0.5 Vdc to -37 Vdc ± 0.5 Vdc operating range). Less than -46 Vdc ± 0.5 Vdc starting. Input Power: < 25 Watts (nominal) Cheers, DaveM ----- Original Message ----- From: "Time-Nuts" <time-nuts@lists.febo.com> To: "Time-Nuts" <time-nuts@lists.febo.com> Cc: cdelect@juno.com Sent: Wednesday, January 17, 2024 10:05:48 PM Subject: [time-nuts] Need power requirements for the Z3805A Hi, Anyone know what the power requirements (DC current) for the 48V and 24V nominal HP Z3805A GPS receivers are. Cheers, Corby _______________________________________________ time-nuts mailing list -- time-nuts@lists.febo.com To unsubscribe send an email to time-nuts-leave@lists.febo.com

Hi I seem to recall 1A and 2A respectively. That’s going from decades ago memory so maybe not 100% accurate. Bob > On Jan 17, 2024, at 11:05 PM, cdelect--- via time-nuts <time-nuts@lists.febo.com> wrote: > > Hi, Anyone know what the power requirements (DC current) for the 48V and 24V nominal HP Z3805A GPS receivers are. Cheers, > Corby > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com

Hi That last line is the gotcha. If 25W is the “nominal” …. what’s the max? Is the 25W after the 10811 warms up? (I believe it is ….). Bob > On Jan 18, 2024, at 11:10 AM, DM via time-nuts <time-nuts@lists.febo.com> wrote: > > Corby, > You can find the complete user manual with a quick Google search. Here's the power requirements from the manual: > Power Requirements > DC Power: > +27 Vdc nominal (19 Vdc ± 0.5 Vdc to 30 Vdc ± 0.5 Vdc operating range). Greater than 23 Vdc ± 0.5 Vdc starting. > -54 Vdc nominal (-60 Vdc ± 0.5 Vdc to -37 Vdc ± 0.5 Vdc operating range). Less than -46 Vdc ± 0.5 Vdc starting. > Input Power: < 25 Watts (nominal) > > Cheers, > DaveM > > > ----- Original Message ----- > From: "Time-Nuts" <time-nuts@lists.febo.com> > To: "Time-Nuts" <time-nuts@lists.febo.com> > Cc: cdelect@juno.com > Sent: Wednesday, January 17, 2024 10:05:48 PM > Subject: [time-nuts] Need power requirements for the Z3805A > > Hi, Anyone know what the power requirements (DC current) for the 48V and 24V nominal HP Z3805A GPS receivers are. Cheers, > Corby > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com

I was assuming Lon's question was re the *EXTERNAL *power supplies for Z3805As. I have four Z3805As, and they all take a 24VDC input via an XLR connector, which IIRC was a standard factory configuration. I use Meanwell GS60A24-P1J desktop power supplies <https://www.jameco.com/z/GS60A24-P1J-MEAN-WELL-60W-24V-2-5A-3-Wire-Table-Top-Power-Supply-with-2-1mm-Plug_1952214.html>, "50W max" (with the stock plug replaced with a female XLR connector, of course). They work great. --Andrew -------------------------------- Andrew E. Kalman, Ph.D. On Thu, Jan 18, 2024 at 2:01 PM Bob Camp via time-nuts < time-nuts@lists.febo.com> wrote: > Hi > > That last line is the gotcha. If 25W is the “nominal” …. what’s the max? > Is the 25W after the 10811 warms up? (I believe it is ….). > > Bob > > > On Jan 18, 2024, at 11:10 AM, DM via time-nuts <time-nuts@lists.febo.com> > wrote: > > > > Corby, > > You can find the complete user manual with a quick Google search. > Here's the power requirements from the manual: > > Power Requirements > > DC Power: > > +27 Vdc nominal (19 Vdc ± 0.5 Vdc to 30 Vdc ± 0.5 Vdc operating range). > Greater than 23 Vdc ± 0.5 Vdc starting. > > -54 Vdc nominal (-60 Vdc ± 0.5 Vdc to -37 Vdc ± 0.5 Vdc operating > range). Less than -46 Vdc ± 0.5 Vdc starting. > > Input Power: < 25 Watts (nominal) > > > > Cheers, > > DaveM > > > > > > ----- Original Message ----- > > From: "Time-Nuts" <time-nuts@lists.febo.com> > > To: "Time-Nuts" <time-nuts@lists.febo.com> > > Cc: cdelect@juno.com > > Sent: Wednesday, January 17, 2024 10:05:48 PM > > Subject: [time-nuts] Need power requirements for the Z3805A > > > > Hi, Anyone know what the power requirements (DC current) for the 48V and > 24V nominal HP Z3805A GPS receivers are. Cheers, > > Corby > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe send an email to time-nuts-leave@lists.febo.com > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe send an email to time-nuts-leave@lists.febo.com > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com

The killer is the inrush current at turn-on, which is not specified. I mitigated this for my Z3801 with an ICL. Simple and cheap. On Thu, Jan 18, 2024, 5:26 PM Bob Camp via time-nuts < time-nuts@lists.febo.com> wrote: > Hi > > That last line is the gotcha. If 25W is the “nominal” …. what’s the max? > Is the 25W after the 10811 warms up? (I believe it is ….). > > Bob > > > On Jan 18, 2024, at 11:10 AM, DM via time-nuts <time-nuts@lists.febo.com> > wrote: > > > > Corby, > > You can find the complete user manual with a quick Google search. > Here's the power requirements from the manual: > > Power Requirements > > DC Power: > > +27 Vdc nominal (19 Vdc ± 0.5 Vdc to 30 Vdc ± 0.5 Vdc operating range). > Greater than 23 Vdc ± 0.5 Vdc starting. > > -54 Vdc nominal (-60 Vdc ± 0.5 Vdc to -37 Vdc ± 0.5 Vdc operating > range). Less than -46 Vdc ± 0.5 Vdc starting. > > Input Power: < 25 Watts (nominal) > > > > Cheers, > > DaveM > > > > > > ----- Original Message ----- > > From: "Time-Nuts" <time-nuts@lists.febo.com> > > To: "Time-Nuts" <time-nuts@lists.febo.com> > > Cc: cdelect@juno.com > > Sent: Wednesday, January 17, 2024 10:05:48 PM > > Subject: [time-nuts] Need power requirements for the Z3805A > > > > Hi, Anyone know what the power requirements (DC current) for the 48V and > 24V nominal HP Z3805A GPS receivers are. Cheers, > > Corby > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe send an email to time-nuts-leave@lists.febo.com > > _______________________________________________ > > time-nuts mailing list -- time-nuts@lists.febo.com > > To unsubscribe send an email to time-nuts-leave@lists.febo.com > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com

Hi The original question from Corby was about max input current on the Z3805. 50W at 24V is pretty much right at 2A …. Is the real answer 1.83? Who knows ... Bob > On Jan 18, 2024, at 6:34 PM, Andrew Kalman via time-nuts <time-nuts@lists.febo.com> wrote: > > I was assuming Lon's question was re the *EXTERNAL *power supplies for > Z3805As. > > I have four Z3805As, and they all take a 24VDC input via an XLR connector, > which IIRC was a standard factory configuration. > > I use Meanwell GS60A24-P1J desktop power supplies > <https://www.jameco.com/z/GS60A24-P1J-MEAN-WELL-60W-24V-2-5A-3-Wire-Table-Top-Power-Supply-with-2-1mm-Plug_1952214.html>, > "50W max" (with the stock plug replaced with a female XLR connector, of > course). They work great. > > --Andrew > > -------------------------------- > Andrew E. Kalman, Ph.D. > > > On Thu, Jan 18, 2024 at 2:01 PM Bob Camp via time-nuts < > time-nuts@lists.febo.com> wrote: > >> Hi >> >> That last line is the gotcha. If 25W is the “nominal” …. what’s the max? >> Is the 25W after the 10811 warms up? (I believe it is ….). >> >> Bob >> >>> On Jan 18, 2024, at 11:10 AM, DM via time-nuts <time-nuts@lists.febo.com> >> wrote: >>> >>> Corby, >>> You can find the complete user manual with a quick Google search. >> Here's the power requirements from the manual: >>> Power Requirements >>> DC Power: >>> +27 Vdc nominal (19 Vdc ± 0.5 Vdc to 30 Vdc ± 0.5 Vdc operating range). >> Greater than 23 Vdc ± 0.5 Vdc starting. >>> -54 Vdc nominal (-60 Vdc ± 0.5 Vdc to -37 Vdc ± 0.5 Vdc operating >> range). Less than -46 Vdc ± 0.5 Vdc starting. >>> Input Power: < 25 Watts (nominal) >>> >>> Cheers, >>> DaveM >>> >>> >>> ----- Original Message ----- >>> From: "Time-Nuts" <time-nuts@lists.febo.com> >>> To: "Time-Nuts" <time-nuts@lists.febo.com> >>> Cc: cdelect@juno.com >>> Sent: Wednesday, January 17, 2024 10:05:48 PM >>> Subject: [time-nuts] Need power requirements for the Z3805A >>> >>> Hi, Anyone know what the power requirements (DC current) for the 48V and >> 24V nominal HP Z3805A GPS receivers are. Cheers, >>> Corby >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@lists.febo.com >>> To unsubscribe send an email to time-nuts-leave@lists.febo.com >>> _______________________________________________ >>> time-nuts mailing list -- time-nuts@lists.febo.com >>> To unsubscribe send an email to time-nuts-leave@lists.febo.com >> _______________________________________________ >> time-nuts mailing list -- time-nuts@lists.febo.com >> To unsubscribe send an email to time-nuts-leave@lists.febo.com > _______________________________________________ > time-nuts mailing list -- time-nuts@lists.febo.com > To unsubscribe send an email to time-nuts-leave@lists.febo.com