Re: [CAD_CAM_EDM_DRO] Re: Stepper power supplies, unregulated or regulated? Switched or linear?

Could you possibly build me a power supply that would operate up to 12
motors? I would need to be able to turn off any output not in use.

Smoke

-----Original Message-----
From: Mariss Freimanis <geckohall@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Friday, December 01, 2000 8:17 PM
Subject: [CAD_CAM_EDM_DRO] Re: Stepper power supplies, unregulated or
regulated? Switched or linear?

>Hi,
>
>Bob, it makes no difference. You can use a single supply if you want
>or use individual ones; it is mostly a question of price and space.
>
>A single big supply should be a little cheaper per Watt than several
>supplies that add up to the same wattage.
>
>However with multiple supplies you have the ability to tailor the
>voltage to the paricular motor rather than having a one size fits all
>situation.
>
>The drives are perfectly happy to run from an unregulated supply,
>coincidentaly the cheapest as well.
>
>Use a regulated supply if your operating voltage will be near the
>maximum voltage limit of the drive. Unregulated supplies "track" the
>input voltage and thus can exceed the drive limit if your electric
>company is feeling particularly frisky on any paricular day. Your
>115VAC voltage is +/- 15%. Watchout for the +15%!
>
>For regulated supplies, it makes no difference if a supply is a
>switcher or linear. Go with the best deal. Do use a large (10,000uF)
>capacitor on the output though. Regulators tend go crazy when current
>gets returned to them. Think of the big cap as Prozac for a power
>supply.
>
>Low cost suggestions. Roll your own. All it takes is a transformer,
>bridge rectifier and filter capacitor. The drives love it and it is
>simple and cheap.
>
>Mariss
>Geckodrive Inc.
>
>
>
>--- In CAD_CAM_EDM_DRO@egroups.com, Robert Allen & Marsha Camp
><mcamp@t...> wrote:
>> Can anyone tell me what the ins and outs of power supplies
>> are? I am planning on buying a couple of Gekko g201 stepper
>> drives and 720 in. oz. motors.
>> Should I get a power supply for each drive or one big power
>> supply? Unregulated or regulated? Switched or linear?
>> Any low cost suggestions?
>> Bob
>
>
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