Please send information pertaining to a commercially available device
which not only converts 110v to 220v (i.e. a step-up converter), but
ALSO converts 60 MHz to 50 MHz, and how it could be obtained?
N.B. - please don't just tell me about step-up converters those are
readily available - it's the cycle conversion aspect that I must have
and I've found impossible to find - the reason is that it's for an
application that is extremely sensitive to the sound the motor makes
(i.e. and instrument for classical music).

---

Request for Question Clarification by vinods-ga on 21 Oct 2002 03:27 PDT

Hello kevinjngalie,

Do you mean 60Hz to 50 Hz? 

warm regards
vinods-ga

---

Request for Question Clarification by vinods-ga on 21 Oct 2002 03:30 PDT

Hello again, kevinjngalie

Could you give me some more specifications of the motor yo uare trying to run? 

warm regards
vinods-ga

Hi kevinjngalie-ga,

If a two-step (convert voltage and frequency separately) procedure is
not acceptable, please request a clarification and I will look for an
all-in-one product for you.

As you mentioned, it is pretty easy to find transformers to convert
between 110 and 220V.  I will leave the selection of one up to you, as
they vary in capacity and price and you should select one best suited
to your application.

As to the frequency conversion, you also have a number of options. 
Visicomm Industries has a number of solid state frequency converters (
http://www.50hz.com/1kssdata.html and
http://www.50hz.com/1_2_3kva.html ) ranging in capacity from 700W to
2100W.

You can find competing products offering a wider range of load
capacity by searching on Google for '60 to 50Hz frequency converter'.


If this is not an acceptable answer, please request a clarification
and specify the following:
What power outlet do you have available to plug a transformer into? 
(eg NEMA-15R)
What power plug do you want to plug into the transformer?  (eg
NEMA-15P)
What load do you anticipate?  (eg 1000W)
Do you have any other criteria that should be met?  (eg size, weight,
etc.)

-Haversian

Hello kevinjngalie, 

While I was working on an answer to your question, I was looking at
two aspects:

1. Unit Size and weight - since you may travel with your instrument,
one would prefer having a power unit that is compact - 1 unit - and
does not weigh a ton!

2. International support options in case you want to use it in other
countries. I always make it a point to look for this when it comes to
electronic devices.


I found one company, BEHLMAN that not only makes AC step-up converters
with frequency conversion within one unit but also claims it can
provide custom-made solutions.

They have some ready-made products. One that seemed not too heavy and
was also compact:

AC POWER SUPPLY FREQUENCY CONVERTER / INVERTER P1350 Power Passport
[ http://www.behlman.com/powpass.htm ]

Printable Specifications Sheet (PDF) [
http://www.behlman.com/p1350_ss.pdf ]

Power: 1350VA 
Dimensions: 3.5" H x 17"D x 17"W 
Weight: 39lbs 
Input Voltage: 120, +/-10% Frequency: 47-440Hz  
Output Voltage: Dual Range; 0 - 135 & 0 -270VAC, full isolation from
input.
Output Frequency: 50Hz, 60Hz or 400Hz
  
This product is actually meant for providing power for testing
devices, and therefore should be quite accurate.


BEHLMAN also offers to build custom products. They may be able to
build one to meet your specific requirements.
[ http://www.behlman.com/products.htm#custom ]

They have a number of US & International representatives. 
[ http://www.behlman.com/domrep.htm ]
[ http://www.behlman.com/intrep.htm ]


- BEHLMAN CONTACT INFORMATION -
East Coast Address:
80 Cabot Ct.
Hauppauge, NY 11788
TEL (800) 874-6727   (631) 435-0410
FAX (631) 951-4341 West Coast
4532 Telephone Rd. / Suite 103 
Ventura, CA 93003
TEL (800) 456-2006   (805) 642-0660
FAX (805) 642-0790 

West Coast Address: 
West Coast
4532 Telephone Rd. / Suite 103 
Ventura, CA 93003
TEL (800) 456-2006   (805) 642-0660
FAX (805) 642-0790

Email: sales@behlman.com

From all the above, this company seems like a good option. 

Warm regards
vinods-ga

----
Search criteria - key words:
"60 Hz to 50 Hz"  frequency converters 
"60 Hz to 50 Hz"  frequency converters power supply
----

Hi, 

Another company making such a power supply:

HOKETECH
[ http://www.hotektech.com/EPSAA_F.htm ]

150 Watt power supply weighs 18.5 kilograms, similar to the BEHLMANN unit. 

warm regards
vinods-ga

Hi kevinjngalie, 

I wanted to know what was the musical instrument you mentioned in your
question, if you don't mind...

warm regards

vinods-ga