I just won:
http://www.ebay.co.uk/itm/Power-Supply-X-Din-Rail-Series-Power-One-Convert-Select-/261129435636
The chap says he has more. (24V 500W DIN-mount, £632 list price,
though I don't know if he knows that)
Anyone interested?
--
atp
If you can't fix it, you don't own it.
http://www.ifixit.c
It is hard to beat a properly sized linear power supply for reliability.
The cost difference compared to a switcher is not that great. However,
I've used both.
For big switchers, I have bought several from this company:
http://www.powersupplyemporium.com/
It is not obvious from their website
On Thursday 22 November 2012 01:07:50 cogoman did opine:
> On 11/20/2012 11:28 AM, Gene Heskett wrote:
> > But I wanted something at about 40 volts for the lathe & wound up
> > making an unregulated linear for 10% of the cost of a switcher at the
> > time. Loaded up, its doing about 37 volts so I
On 11/20/2012 11:28 AM, Gene Heskett wrote:
> But I wanted something at about 40 volts for the lathe & wound up making an
> unregulated linear for 10% of the cost of a switcher at the time. Loaded
> up, its doing about 37 volts so I missed my target, but it gets the job
> done, moving the lathe at
On Wednesday 21 November 2012 15:46:42 Peter Blodow did opine:
> Gene Heskett schrieb:
>
> /snip/
>
> > But I wanted something at about 40 volts for the lathe & wound up
> > making an unregulated linear for 10% of the cost of a switcher at the
> > time. Loaded up, its doing about 37 volts so I
Gene Heskett schrieb:
/snip/
> But I wanted something at about 40 volts for the lathe & wound up making an
> unregulated linear for 10% of the cost of a switcher at the time. Loaded
> up, its doing about 37 volts so I missed my target, but it gets the job
> done, moving the lathe at very good
An alternative I spotted on eBay some time ago (and there seem to
always be several)
http://www.ebay.co.uk/itm/STADIUM-5-2V-12V-12V-24V-34V-TRANSFORMER-POWER-SUPPLY-/261124905065?
(look at his other items)
He had some 10A 50V supplies a few weeks ago (with a bunch of other
voltages too)
--
atp
I
On 11/20/2012 03:44 PM, Bruce Layne wrote:
> If you want to eliminate the high frequency noise from a switching power
> supply, you could use ferrite beads on the output of the switching power
> supply, or wrap that output wire several times around a ferrite toroid
> core to act as an RF choke.
For my servo CNC lathe conversion, I bought a linear power supply with a
toroidal transformer from AnTek.
http://www.antekinc.com
They're a little pricy, but nothing like the prices I've seen in this
thread. The AnTek power supplies provide the higher voltage needed for
the stepper or servo m
On Tuesday 20 November 2012 14:15:44 Viesturs Lācis did opine:
> 2012/11/20 andy pugh :
> > On 20 November 2012 11:23, wrote:
> >> I see a great many lower priced switching supplies
> >
> > Possibly because a motor power supply contains too few components to
> > bother selling as a unit.
> > A
On Tue, 2012-11-20 at 19:08 +0200, Viesturs Lācis wrote:
> 2012/11/20 andy pugh :
> > On 20 November 2012 11:23, wrote:
> >
> >> I see a great many lower priced switching supplies
> >
> > Possibly because a motor power supply contains too few components to
> > bother selling as a unit.
> > A tran
wer
supply, and feed all the drives off that as a DC link.
Hope that helps
Ben
-Original Message-
From: kqt4a...@gmail.com [mailto:kqt4a...@gmail.com]
Sent: 20 November 2012 11:24
To: emc-users@lists.sourceforge.net
Subject: [Emc-users] power supplies
Would y'all comment a bit power
2012/11/20 andy pugh :
> On 20 November 2012 11:23, wrote:
>
>> I see a great many lower priced switching supplies
>
> Possibly because a motor power supply contains too few components to
> bother selling as a unit.
> A transformer, rectifier and capacitor is all that is needed. And the
> transfo
On Tuesday 20 November 2012 11:17:54 kqt4a...@gmail.com did opine:
> Would y'all comment a bit power supplies, linear or switching
> Pro's and con's
> Do's and don't
> I see a great many lower priced switching supplies
>
> Richard
>
It depends on the supply whether it can be used with steppers o
linear PSUs can be momentarily overloaded quite a bit. That's what I've
heard make them preferable for stepper/servo PSUs. The servo/stepper drive
will contain more or less circuits for voltage and/or current control, so
it's not that important to have a well-regulated DC-rail for the drive.
If you
On Tue, Nov 20, 2012 at 11:23 AM, wrote:
> Would y'all comment a bit power supplies, linear or switching
> Pro's and con's
> Do's and don't
> I see a great many lower priced switching supplies
Some switchers need a minimum load to work
I use a switcher for my stepper driven mill, worksforme
Just
On 20 November 2012 11:23, wrote:
> I see a great many lower priced switching supplies
Possibly because a motor power supply contains too few components to
bother selling as a unit.
A transformer, rectifier and capacitor is all that is needed. And the
transformer may be optional.
--
atp
If yo
Would y'all comment a bit power supplies, linear or switching
Pro's and con's
Do's and don't
I see a great many lower priced switching supplies
Richard
--
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