Re: [CAD_CAM_EDM_DRO] Power Supply Basics - Question

If you connect them in series, you get 40v @ 2.5 amps. If you connect
them in parallel, you get 20v at 5 amps. If you can use 48v, you can go
here: http://mpja.com/listitems.asp?dept=45 and get two 24v
transformers, or a 24v and a 12v for 36v. If you've got the money, you
can go to http://www.digikey.com/, search for transformer, and use
their parametric search to find the one you want. Try the toroidals,
there are more of those.

On Thursday, December 18, 2003, at 11:21 AM, jharnedy@... wrote:

>
> Hi list,
>
> Hooking up G201s to SanyoDenki 103 H 8221 – 5141
> Motor specs Vdc = 2.4, Phase current 4 amps
>
> Per Gecko white paper, 25 times voltage = 60 Vdc, hence divide by
> 1.414 => 42 Vac
>
> Current is 1/3 per motor (4 wire, bipolar), so for 3 motors PS output
> needs 4 amps
>
> If 4 axis, then 4 motors => 5.3amps
>
> Hope above logic is correct, if not please highlight errors!
>
> Have been looking around for 42Vac output, and best i can find is a
> 230Vac transformer with 2 independent secondaries, both rated at 20
> Vac @ 2.5 amps ( part no RS 805-300 ). Can i hook these up in series
> to get 40Vac @ 5 amps?
> If so, will there be any issues with using just 3 motors (the 4th may
> not be connected up until i can get my head around how to design the
> fourth axis economically!)
>
> TIA
> John
>
>
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