how can we change a motor from 220V to 12 V ?

[Bryan Hackney]

how can we change a motor from 220V to 12 V ?

Call up your motor distributor, and ask for a 12V
motor in the same size and power as the existing motor.
You might want to specify AC or DC. Current will go up
by about 10x. Please ask a real engineer for help before
placing the order.

Next question?

[Mylinux]

Post by Bryan Hackney

how can we change a motor from 220V to 12 V ?

Call up your motor distributor, and ask for a 12V
motor in the same size and power as the existing motor.
You might want to specify AC or DC. Current will go up
by about 10x. Please ask a real engineer for help before
placing the order.
Next question?

sorry , poor written computer english; it should be read as:


how can we change a motor from 220V AC to 12 V DC?

[Hans-Bernhard Broeker]

In comp.arch.embedded Mylinux <***@my.com> wrote:

[...]
It's not at all a problem with your English we're facing here, but
with your complete ignorance regarding the subject you're talking
about.

You never seem to have grasped how usenet works, either. I'd say your
question is off-topic in every single one of the 6 newsgroups you
crossposted it to.

The answer to your question is: you can't, period. Odds are you'ld
kill yourself doing anything that involves 220 AC lines. Somebody
else might be able to do it for you, though. So please acquire
professional assistance.

[Boner the Cat]

Hey Mr. Hans-Berky-bobber, try and be a little civil to someone that is
asking for help. If you can't help, move on. no one wants or needs your
sarcasm. if you think it made you look intelligent well...

you know the old adage about keep you mouth closed and let them think you a
fool or open it and confirm you are......

Post by Hans-Bernhard Broeker
It's not at all a problem with your English we're facing here, but
with your complete ignorance regarding the subject you're talking
about.
You never seem to have grasped how usenet works, either. I'd say your
question is off-topic in every single one of the 6 newsgroups you
crossposted it to.
The answer to your question is: you can't, period. Odds are you'ld
kill yourself doing anything that involves 220 AC lines. Somebody
else might be able to do it for you, though. So please acquire
professional assistance.
--
Even if all the snow were burnt, ashes would remain.

[ben williams]

Post by Mylinux

Post by Bryan Hackney

how can we change a motor from 220V to 12 V ?

Call up your motor distributor, and ask for a 12V
motor in the same size and power as the existing motor.
You might want to specify AC or DC. Current will go up
by about 10x. Please ask a real engineer for help before
placing the order.
Next question?

how can we change a motor from 220V AC to 12 V DC?

You want to rewind a 220vac motor to run on 12vdc?
Or just run a 220vac motor on 12vdc?

The first is virtually impossible, or at best a very expensive waste of
time.
The second requires an inverter with a 12vdc input and a 220vac output. Not
too hard to find in european coumtries.
ben

[Bryan Hackney]

Post by Mylinux

Post by Bryan Hackney

how can we change a motor from 220V to 12 V ?

Call up your motor distributor, and ask for a 12V
motor in the same size and power as the existing motor.
You might want to specify AC or DC. Current will go up
by about 10x. Please ask a real engineer for help before
placing the order.
Next question?

how can we change a motor from 220V AC to 12 V DC?

Now for the non-smartass reply. BTW, this is way too much cross-posting.

You cannot change a motor from 220VAC to 12VDC, if you mean using the very
same motor. That just cannot happen.

220VAC sounds like single phase. Single phase AC motors use either capacitive
or inductive starters. DC motors are very different. But the short answer to
your question is : buy a new motor.

Here's a scenario. You have a 220VAC 1/2 HP 1750 RPM capacitor start motor in
frame size X.

You can possibly get a 1/2 HP brush DC motor in the same frame size. The torque-
speed curves may be very different between these, but no matter. Hopefully you
can run it at about 1750 RPM with about 1/2 HP output. Depends.

The next big question is : why in the world do you want to do this?

To drive the DC motor, you will need a very large 12VDC supply, along the lines
of a car battery, and along the lines of current that would drain a car battery
in about 10 minutes (given my examples).

If you just need a prime mover that runs off 12VDC for a particular application,
and someone happened to sneak in an AC motor, forget that last fact and start
again from the basics.

[Ken Lee]

Post by Mylinux

Post by Bryan Hackney

how can we change a motor from 220V to 12 V ?

Call up your motor distributor, and ask for a 12V
motor in the same size and power as the existing motor.
You might want to specify AC or DC. Current will go up
by about 10x. Please ask a real engineer for help before
placing the order.
Next question?

how can we change a motor from 220V AC to 12 V DC?

Basically I would follow Bryan's recommendation. Take the specs of the
220V AC motor to your motor distributor. However if you are asking how
to run a 220V AC motor (system) off a 12V DC supply then I would be
looking at 12 volt to 220V AC inverters.

Ken.

+====================================+
I hate junk email. Please direct any
genuine email to: kenlee at hotpop.com

[René]

Post by Ken Lee

Post by Mylinux
how can we change a motor from 220V AC to 12 V DC?

Basically I would follow Bryan's recommendation. Take the specs of the
220V AC motor to your motor distributor. However if you are asking how
to run a 220V AC motor (system) off a 12V DC supply then I would be
looking at 12 volt to 220V AC inverters.
Ken.

Basically a shunt commutating motor runs off AC as good as DC. If you
connect your vacuum cleaner to e.g. a 24V DC source it might just
turn. (not very hard though)
Theoretically winding down the rotor and rewinding it with a larger
diameter wire should suffice.
Most people do not have *that* amount of spare time however:-)

A RC Model shop may be a good place to pick up a purpose built
hi-performance DC motor.

[Don Kelly]

Post by René

Post by Ken Lee

Post by Mylinux
how can we change a motor from 220V AC to 12 V DC?

Basically I would follow Bryan's recommendation. Take the specs of the
220V AC motor to your motor distributor. However if you are asking how
to run a 220V AC motor (system) off a 12V DC supply then I would be
looking at 12 volt to 220V AC inverters.
Ken.

Basically a shunt commutating motor runs off AC as good as DC. If you
connect your vacuum cleaner to e.g. a 24V DC source it might just
turn. (not very hard though)

------------------
I assume you mean a series motor. A shunt commutator motor won't do. In any
case at 12V a 240V universal motor will very little torque (as you say) and
will be unlikely to start.

Post by René
Theoretically winding down the rotor and rewinding it with a larger
diameter wire should suffice.

--------
Assuming this is the kind of motor that the original poster has, thne by the
time one also modifies the field- why bother? :)

--
Don Kelly
***@peeshaw.ca
remove the urine to answer

Post by René
Most people do not have *that* amount of spare time however:-)
A RC Model shop may be a good place to pick up a purpose built
hi-performance DC motor.
--
- René

[Dave McMahon]

I think the answers are over-complicated in Britain we have 22V AC power
(not 110V) so you just need a standard power adaptor (like one you use to
charge a mobile (cell) phone but with 12V DC output and make sure the power
adaptor has at least 100mA (measure of current) MORE than the motor is rated
at (to prevent overheating of power adaptor)

I might be wrong but this is how I interpreted the question:

How can I run a 12V DC motor from mains power?

[Mylinux]

How can I run a 12V DC motor from mains power?
no
my original question


how can we change a motor from 220 v to 12 V?

[Al Gosselin]

Post by Dave McMahon
How can I run a 12V DC motor from mains power?
no
my original question
how can we change a motor from 220 v to 12 V?

If you've been reading the other replies, there are two ways you can
go here.

1) You can physically remove the 220V motor that you have and replace
it with a 12V motor of the same size. This is like the way you
"change" a tire. Once you've done this replacement, you'll need much
larger power wires, assuming you want the same torque.

2) You can't. A 220V AC motor, generally can't be changed into a 12V
motor, without massive internal changes. The work involved would mean
that choice 1) would be better.

The last time I tried something like this, I was around 7 years old,
and I tried to plug my 3V Erector set motor into a 110V outlet. The
motor never worked again.

[Dave McMahon]

I might be wrong but this is how I interpreted the question:

How can I run a 12V DC motor from mains power?

I think the answers are over-complicated in Britain we have 22V AC power
(not 110V) so you just need a standard power adaptor (like one you use to
charge a mobile (cell) phone but with 12V DC output and make sure the power
adaptor has at least 100mA (measure of current) MORE than the motor is rated
at (to prevent overheating of power adaptor)