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Power supply needed on pier.

Thomas Glynn All Messages By This Member #59488 I'm trying to figure out the power requirements needed for my pier.? In the description of the mount it says? "Dual 12~18 VDC input/output (3.0 A)"? is that the requirement or the output from the dual connection?? The other items on the pier are: SBig stt-8300 with filter wheel? (3.5a) zwo120mm ____? Canon 6D? (8v, 3a)? ?????? USB 3.0 powered hub? (3 amps) QHY polemaster camera? (0.35W, 70 mA (approx.) I'm looking for a power supply to have enough amperage to run through a KMTronic usb 8 channel relay board.?? The Canon is another problem.? ?Any help would be appreciated.?? ?I'm trying to manage my cable system to a "WATCH OUT FOR THE WIRES" resolve.? On my old G-11 I was running a 16v power supply.? Is 16 volt better than 12 for my new G-11, or is that not the issue the amperage is the issue??? My scopes on the mount are piggybacked? ES127CF WO 81GTF Stellarvue SX50 Thomas Glynn Happy astronomer?? Springfield MO
Michael Herman All Messages By This Member #59490 Thomas, Some of the power could be from one power supply, but you might find more noise in your images if your camera shares a "noisy" power supply -- where the noise comes from some other gadget taking supply current in pulses.? ?I think your cameras might work better with their own clean power supply...nothing shared.? The other thing we now know about the G11 or other Losmandy mounts is that the motors have more torque and fewer "Lags" warnings if you use the higher end voltage like 16, 17, 18V, instead of like 12V.? ?(I recently made a 12V to 17V regulated converter box to boost the supply to the Gemini1,? and that also protects the unit from high voltage glitches too. ) Other than that.... you need to make up a spreadsheet to sum up the current demand at each voltage supply.? Tgen get power supplies at least 1 amp bigger than that..you cant trust today's suppliers to tell the truth (if you ever could).? My USB hubs have AC/DC supplies rated either 12V 1 amp for my USB3, or 5V 1 amp for my USB2. Yours could be different...be careful. Have fun, Michael? toggle quoted message Show quoted text On Nov 5, 2017 3:40 AM, "tglynn72@... [Losmandy_users]" <Losmandy_users@...> wrote: ? I'm trying to figure out the power requirements needed for my pier.? In the description of the mount it says? "Dual 12~18 VDC input/output (3.0 A)"? is that the requirement or the output from the dual connection?? The other items on the pier are: SBig stt-8300 with filter wheel? (3.5a) zwo120mm ____? Canon 6D? (8v, 3a)? ?????? USB 3.0 powered hub? (3 amps) QHY polemaster camera? (0.35W, 70 mA (approx.) I'm looking for a power supply to have enough amperage to run through a KMTronic usb 8 channel relay board.?? The Canon is another problem.? ?Any help would be appreciated.?? ?I'm trying to manage my cable system to a "WATCH OUT FOR THE WIRES" resolve.? On my old G-11 I was running a 16v power supply.? Is 16 volt better than 12 for my new G-11, or is that not the issue the amperage is the issue??? My scopes on the mount are piggybacked? ES127CF WO 81GTF Stellarvue SX50 Thomas Glynn Happy astronomer?? Springfield MO
Brian Valente Member Profile All Messages By This Member #59492 Hi Thomas The G11 will be happiest with a voltage somewhere between 15-18v. I use a standard 12v battery and use a 12v upconverter (lots available on amazon, etc.)? As for power on the pier for the other items, you can look at something like an anderson powerpole distributor you have to end up building or modifying a lot of your own cables, but I end up with just one cable from the telescope to the ground (where the battery is).? Canon camera is more tricky, since it isn't really geared for external batteries, the canon accessories are for external AC power.? B
Les Niles All Messages By This Member #59493 Does the G-11 have the 492 digital drive or a Gemini? If it’s the 492, I’ve measured the power consumption at 250mA when tracking and 400mA slewing at 16x. Nowhere near 3A. And there’s no reason to run a higher voltage on the 492, as the “12V” input is regulated down to 5V. That USB powered hub doesn’t consume 3A. That rating must be based on powering a bunch of other USB devices from the hub. The hub itself will use an insignificant amount of power, so just add up the the current requirements of whatever is powered from the hub. For the Canon, you could use a switching regulator to convert 12V to 8V, something like this: <> It would need less than 2.5A at 12V input to produce 3A/8V output. -Les On 5 Nov 2017, at 3:40, tglynn72@... [Losmandy_users] <Losmandy_users@...> wrote: I'm trying to figure out the power requirements needed for my pier. In the description of the mount it says "Dual 12~18 VDC input/output (3.0 A)" is that the requirement or the output from the dual connection? The other items on the pier are: SBig stt-8300 with filter wheel (3.5a) zwo120mm ____? Canon 6D (8v, 3a) ????? USB 3.0 powered hub (3 amps) QHY polemaster camera (0.35W, 70 mA (approx.) I'm looking for a power supply to have enough amperage to run through a KMTronic usb 8 channel relay board. The Canon is another problem. Any help would be appreciated. I'm trying to manage my cable system to a "WATCH OUT FOR THE WIRES" resolve. On my old G-! 11 I was running a 16v power supply. Is 16 volt better than 12 for my new G-11, or is that not the issue the amperage is the issue? My scopes on the mount are piggybacked ES127CF WO 81GTF Stellarvue SX50 Thomas Glynn Happy astronomer Springfield MO [Non-text portions of this message have been removed]
Brian Valente Member Profile All Messages By This Member #59496 开云体育 I think amperage also depends on the load. When I slew a really heavy setup, I see the amps much higher - 2-3Amp ? Thanks ? Brian ? ? Brian Valente Brianvalentephotography.com ? toggle quoted message Show quoted text From: Losmandy_users@... [mailto:Losmandy_users@...] Sent: Sunday, November 5, 2017 8:21 AM To: Losmandy_users@... Subject: Re: [Losmandy_users] Power supply needed on pier. ? ? Does the G-11 have the 492 digital drive or a Gemini? If it’s the 492, I’ve measured the power consumption at 250mA when tracking and 400mA slewing at 16x. Nowhere near 3A. And there’s no reason to run a higher voltage on the 492, as the “12V” input is regulated down to 5V. That USB powered hub doesn’t consume 3A. That rating must be based on powering a bunch of other USB devices from the hub. The hub itself will use an insignificant amount of power, so just add up the the current requirements of whatever is powered from the hub. For the Canon, you could use a switching regulator to convert 12V to 8V, something like this: <> It would need less than 2.5A at 12V input to produce 3A/8V output. -Les > On 5 Nov 2017, at 3:40, tglynn72@... [Losmandy_users] <Losmandy_users@...> wrote: > > > > I'm trying to figure out the power requirements needed for my pier. In the description of the mount it says > > "Dual 12~18 VDC input/output (3.0 A)" is that the requirement or the output from the dual connection? The other items on the pier are: > > SBig stt-8300 with filter wheel (3.5a) > > zwo120mm ____? > > Canon 6D (8v, 3a) ????? > > USB 3.0 powered hub (3 amps) > > QHY polemaster camera (0.35W, 70 mA (approx.) > > > > I'm looking for a power supply to have enough amperage to run through a KMTronic usb 8 channel relay board. > > > > The Canon is another problem. Any help would be appreciated. > > > > I'm trying to manage my cable system to a "WATCH OUT FOR THE WIRES" resolve. On my old G-! 11 I was running a 16v power supply. Is 16 volt better than 12 for my new G-11, or is that not the issue the amperage is the issue? > > > > My scopes on the mount are piggybacked > > ES127CF > > WO 81GTF > > Stellarvue SX50 > > > > Thomas Glynn > > Happy astronomer > > Springfield MO > > > > [Non-text portions of this message have been removed]
Thomas Glynn All Messages By This Member #59505 My mount is the G11-G.?? I beleive I can manage my power needs with a 10a supply.? Just to have a little extra.? ? Les, thanks for the link for the Canon switching regulator.?? Thanks for your responses, I am now closer to achieving a better pier set-up Thomas Glynn Springfield, MO??

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