Re: [MBZ] UPS vs IPS

They all do. At least all the recent ones. Switching mode power supplies promptly turn the AC into DC - at line voltage. That means about 120 VDC. This is then used to drive the DC-to-DC converters that result in +12, +5, +3, -5, etc. Feed it a steady DC in their voltage range and it should

Re: [MBZ] UPS vs IPS

On Sat, 10 Oct 2015 02:32:10 -0500 fmiser via Mercedes wrote: > They all do. At least all the recent ones. Switching mode > power supplies promptly turn the AC into DC - at line > voltage. That means about 120 VDC. This is then used to > drive the DC-to-DC converters

Re: [MBZ] UPS vs IPS

> Meade wrote: > > Are there PC power supplies that accept DC power as well as > AC power? They all do. At least all the recent ones. Switching mode power supplies promptly turn the AC into DC - at line voltage. That means about 120 VDC. This is then used to drive the DC-to-DC converters

Re: [MBZ] UPS vs IPS

G: No, I mean a 110v generator feeding an inverter that converts it to DC. Terminology. That's not an _inverter_! Converting AC to DC is easy, cheap, and common. Inverting the process is not, relatively speaking. The inverter-based generators, like Honda's EU1000i, are DC generators that

Re: [MBZ] UPS vs IPS

> On October 9, 2015 at 1:08 AM archer75--- via Mercedes > wrote: > > G: No, I mean a 110v generator feeding an inverter that converts it to DC. > Then, the inverter feeds the DC to another inverter that produces a 110v sine > wave. Then, if the sine wave is now a steady

Re: [MBZ] UPS vs IPS

On Fri, 9 Oct 2015 10:40:53 -0400 Meade Dillon via Mercedes wrote: > And then your computer takes the 110-240V 50-60Hz and turns it back into > DC... Yup. > A laptop needs a DC input, maybe some efficiency could be gained by > simply converting the AC from the generator

Re: [MBZ] UPS vs IPS

On Oct 7, 2015 11:52 PM, "Jim Cathey via Mercedes" wrote: >> > > Budget is essentially zero, as what we have serves the needs. > We just charge UPS on rope-pull; heat water, cook, dry on BB. May be time for an upgrade, that seems way too complicated. Andrew says solar is

Re: [MBZ] UPS vs IPS

And then your computer takes the 110-240V 50-60Hz and turns it back into DC... A laptop needs a DC input, maybe some efficiency could be gained by simply converting the AC from the generator to DC once, and then only consuming DC on that circuit? Lights and water heaters don't care about

Re: [MBZ] UPS vs IPS

> > Max wrote: > > > > In Jim's case, I don't think I'd want to compete against > > your kid in making > > _anything_! > Jim wrote: > > These are not inherited traits. Kid can't make anything > material. Not interested. True. However, without environment it is less likely for talent to

Re: [MBZ] UPS vs IPS

Jim, Your unit has a mechanical flyweight governor that is either belt or gear driven. It's probably a Hoof, Pierce, or something comparable. You can use the Google to get more information on the Hoof governors, as the operation is pretty common amongst all mechanical governors. You'll have a

Re: [MBZ] UPS vs IPS

On Wed, 7 Oct 2015 19:51:18 -0400 archer75--- via Mercedes wrote: > > I'm thinking two inverters back to back You mean a DC power supply feeding an inverter ... > and a sine wave line conditioner feeding the computer equipment on a > special circuit; assuming that the

Re: [MBZ] UPS vs IPS

But a DC power supply feeding an inverter is exactly what a certain class of UPS is, though I forget the special name. Me too, but all four of our big UPS's are that kind. APC's Smart-UPS x2, and Best Power's FerrUPS x2. We're using the small 2kVA APC. Backups? We gotcher backups right

Re: [MBZ] UPS vs IPS

> > Gerry wrote: > > I'm thinking two inverters back to back > Craig wrote: > You mean a DC power supply feeding an inverter ... G: No, I mean a 110v generator feeding an inverter that converts it to DC. Then, the inverter feeds the DC to another inverter that produces a 110v sine wave. Then,

Re: [MBZ] UPS vs IPS

In Jim's case, I don't think I'd want to compete against your kid in making _anything_! These are not inherited traits. Kid can't make anything material. Not interested. -- Jim ___ http://www.okiebenz.com To search list archives

Re: [MBZ] UPS vs IPS

Not sure if it's in the budget, but it could be retrofitted for an electronic or "isochronous" governor for a few bucks. That keeps it dead nuts at 60Hz no load to full load. Budget is essentially zero, as what we have serves the needs. We just charge UPS on rope-pull; heat water, cook, dry on

Re: [MBZ] UPS vs IPS

from the way things sound. A well adjusted mechanical governor shouldn't vary more than 3Hz at load changes, and that would be heavy loads. If it does, something is not adjusted properly or he's got fuel system issues. Yeah, that mechanical thingy has holes and springs. I have no

Re: [MBZ] UPS vs IPS

I'm thinking two inverters back to back and a sine wave line conditioner feeding the computer equipment on a special circuit; assuming that the inverters can handle a squirrelly sine wave. The DC coming into the second inverter should be converted into reasonable good sine waves, and the line

Re: [MBZ] UPS vs IPS

but they wouldn't recharge on my generator which tended to run outside the 57-63 Hz UPS threshold for OK power. IIRC, that is a bit of an issue. These things need a "Hey, it's not _that_ bad" switch on them or something. Shut up and eat your electrons... Ironically, I have the worst problem

Re: [MBZ] UPS vs IPS

In Jim's case, I don't think I'd want to compete against your kid in making _anything_! - Max Charleston SC On Wed, Oct 7, 2015 at 9:53 AM, Jim Cathey via Mercedes < mercedes@okiebenz.com> wrote: > but they wouldn't recharge on my generator which tended to run >> outside the 57-63

Re: [MBZ] UPS vs IPS

Jim's issue is due to variations in the engine speed. No buck/boost transformer will fix that. He needs to get the sensitivity ("gain") on the governor adjusted properly, from the way things sound. A well adjusted mechanical governor shouldn't vary more than 3Hz at load changes, and that would

Re: [MBZ] UPS vs IPS

You need a "buck booster" in between. basically regulates the power supply. takes crappy waves and makes nice sine waves. Had that problem with helco in Hawaii. had to use a buck booster between the building power and electronics not designed to handle turd world power utilities. but

Re: [MBZ] UPS vs IPS

Jim, You shouldn't be seeing that kind of variation in frequency unless you're running really lightly loaded and/or your governor sensitivity isn't set properly. That unit has a mechanical or "droop" governor. It should be set for around 63Hz at no load, with 60Hz at full load. You can

Re: [MBZ] UPS vs IPS

Jim, You shouldn't be seeing that kind of variation in frequency unless you're running really lightly loaded and/or your governor sensitivity isn't set properly. That unit has a mechanical or "droop" governor. It should be set for around 63Hz at no load, with 60Hz at full load. You can adjust