Increasing AC frequency

[eromlignod]

Guys:

I'm looking at an application where it would be advantageous to have
an AC mains frequency of around 500 Hz (120 V), rather than the
standard 60Hz. Is there a simple/economical way to convert from 60 to
500? It doesn't have to be variable.

Don

 

[Rich Webb]

On Mon, 15 Aug 2011 08:41:20 -0700 (PDT), eromlignod
<eromlignod@aol.com> wrote:

Guys:

I'm looking at an application where it would be advantageous to have
an AC mains frequency of around 500 Hz (120 V), rather than the
standard 60Hz. Is there a simple/economical way to convert from 60 to
500? It doesn't have to be variable.

Static inverters and motor generators are the usual industrial ways,
although 500 Hz is (AFAIK) rather rarer than 400 Hz.

--
Rich Webb Norfolk, VA

 

[Phil Allison]

"eromlignod"

I'm looking at an application where it would be advantageous to have
an AC mains frequency of around 500 Hz (120 V), rather than the
standard 60Hz. Is there a simple/economical way to convert from 60 to
500?

** Lotsa roos loose in this guy's top paddock.

It doesn't have to be variable.

** Thank god for that.



..... Phil

 

[Tim Wescott]

On Mon, 15 Aug 2011 08:41:20 -0700, eromlignod wrote:

Guys:

I'm looking at an application where it would be advantageous to have an
AC mains frequency of around 500 Hz (120 V), rather than the standard
60Hz. Is there a simple/economical way to convert from 60 to 500? It
doesn't have to be variable.

Don

400Hz is a common frequency on airplanes, because the distances are
shorter and the transformers cheaper.

"Simple" and "economical" are slippery words -- compared to a line cord,
no, there is no simple and economical way. Compared to the cost and
complexity of what you need to power? How should we know, you haven't
said!

--
www.wescottdesign.com

 

[Phil Allison]

"Tim Wescott"

400Hz is a common frequency on airplanes, because the distances are
shorter and the transformers cheaper.

** That explanation makes no sense to anyone.



..... Phil

 

[Tim Wescott]

On Tue, 16 Aug 2011 02:21:35 +1000, Phil Allison wrote:

"Tim Wescott"

400Hz is a common frequency on airplanes, because the distances are
shorter and the transformers cheaper.


** That explanation makes no sense to anyone.

Thank you, anyone. I'm sorry that you don't understand. Some knowledge
of basic electromagnetic theory would go a long way to alleviating your
problems in this regard.

--
www.wescottdesign.com

 

[petrus bitbyter]

"eromlignod" <eromlignod@aol.com> schreef in bericht
news:e2b0dbfd-4e1e-4d6a-a5dd-f9848763ba01@h14g2000yqd.googlegroups.com...

Guys:

I'm looking at an application where it would be advantageous to have
an AC mains frequency of around 500 Hz (120 V), rather than the
standard 60Hz. Is there a simple/economical way to convert from 60 to
500? It doesn't have to be variable.

Don

Get a 500Hz oscillator, an audio amplifier and an (audio) transformer.

petrus bitbyter

 

[Michael Black]

On Mon, 15 Aug 2011, eromlignod wrote:

Guys:

I'm looking at an application where it would be advantageous to have
an AC mains frequency of around 500 Hz (120 V), rather than the
standard 60Hz. Is there a simple/economical way to convert from 60 to
500? It doesn't have to be variable.

Explain what you really want to do.

Switching supplies are an example of using higher frequencies so that the
transformer can be much smaller (because it is handling a higher
frequency).

Note that any switching supply converts existing AC to DC, which then
powers a power oscillator that feeds the transformer at a higher
frequency.

But until you explain what you really want, the solution isn't there.

If you're thinking it would be nice to have a smaller transformer in the
power supply, it's already done.

If you hope to get timing off the AC line, but think a higher frequency
makes more sense, then you do the timing from some internal standard
rather than using the AC line for timing.

Michael

 

[Phil Allison]

"Tim Wescott the TROLL "

Phil Allison wrote:

"Tim Wescott"

400Hz is a common frequency on airplanes, because the distances are
shorter and the transformers cheaper.


** That explanation makes no sense to anyone.

Thank you, anyone. I'm sorry that you don't understand.

** My god you are an illiterate fuckhead.




..... Phil

 

[Sjouke Burry]

eromlignod wrote:

Guys:

I'm looking at an application where it would be advantageous to have
an AC mains frequency of around 500 Hz (120 V), rather than the
standard 60Hz. Is there a simple/economical way to convert from 60 to
500? It doesn't have to be variable.

Don
Simple:60Hz motor driving a 500 Hz generator.

Better:60Hz motor driving a 400 Hz generator, combo to be found
in army surplus trade.

 

[m II]

Tim Wescott wrote:

400Hz is a common frequency on airplanes, because the distances are
shorter and the transformers cheaper.

Airplanes use(d) 400Hz because the associated equipment is LIGHTER.
Transformer/etc. cores can be made smaller.


mike

 

[Tim Wescott]

On Mon, 15 Aug 2011 19:47:18 -0600, m II wrote:

Tim Wescott wrote:

400Hz is a common frequency on airplanes, because the distances are
shorter and the transformers cheaper.


Airplanes use(d) 400Hz because the associated equipment is LIGHTER.
Transformer/etc. cores can be made smaller.

Dangit! I was _thinking_ lighter! Really!

(they're sure as heck not cheaper!).

--
www.wescottdesign.com

 

[John Fields]

On Mon, 15 Aug 2011 08:41:20 -0700 (PDT), eromlignod
<eromlignod@aol.com> wrote:

Guys:

I'm looking at an application where it would be advantageous to have
an AC mains frequency of around 500 Hz (120 V), rather than the
standard 60Hz. Is there a simple/economical way to convert from 60 to
500? It doesn't have to be variable.

---
Power out?

Sinusoidal output?

--
JF

 

[Uwe Hercksen]

Tim Wescott schrieb:

400Hz is a common frequency on airplanes, because the distances are
shorter and the transformers cheaper.

Hello,

the weight of the transformers is important for airplanes and this is
much smaller using 400 Hz instead of 50 or 60 Hz. Transformers for the
use in airplanes are not cheap.

Bye

 

[Cydrome Leader]

eromlignod <eromlignod@aol.com> wrote:

Guys:

I'm looking at an application where it would be advantageous to have
an AC mains frequency of around 500 Hz (120 V), rather than the
standard 60Hz. Is there a simple/economical way to convert from 60 to
500? It doesn't have to be variable.

Don

simple but not economical would be get an AC power supply from California
Instruments.