Japanese 100V/60Hz soldering iron w/ transformer in 230V/50Hz country? - diyAudio
Go Back   Home > Forums > Design & Build > Equipment & Tools

Equipment & Tools From test equipment to hand tools

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 19th May 2012, 01:26 PM   #1
diyAudio Member
 
Join Date: Apr 2006
Location: Reykjavík
Default Japanese 100V/60Hz soldering iron w/ transformer in 230V/50Hz country?

Hi,

I was in Japan recently and was doing some soldering work there. Picked up two really nice soldering irons for cheap - there's lots of good soldering gear in standard DIY stores over there.

The irons are designed for use in West Japan, and so take 100V, 60Hz. Where I now live, the electricity is 230V, 50Hz. Ignoring the cost-benefit ratio, could I use them over here with a transformer?

Would it then be an 230-to-100V transformer, to adjust the voltage without consideration to the frequency, or should I take a 230-to-120V to keep the voltage-to-frequency ratio the same as out East? (I understand this is appropriate when there's a transformer inside the equipment - link.)

Thank you!
-kd
  Reply With Quote
Old 20th May 2012, 08:10 PM   #2
Simon B is offline Simon B  United Kingdom
diyAudio Member
 
Join Date: Dec 2011
Location: North-East England
Voltage to frequency ratio is relevant in consideration of the possibility of the transformer core saturating - it's the reason that hifi and bass guitar valve amp output transformers need to be much bigger than similarly rated guitar amp output transformers - lower frequencies involved.

You don't say where you're now living, or what the supply frequency is, but presumably locally available transformers will be designed for the local supply frequency.

Use a 230 to 100v transformer.
__________________
Engineer: One who can do for 10 shillings what any fool can do for 10 pounds.
  Reply With Quote
Old 20th May 2012, 09:26 PM   #3
diyAudio Member
 
Join Date: Jul 2010
Location: Stewartsville, NJ
Frequency is irrelevent to a soldering iron. As long as you get the voltage close it will work fine. Too much voltage will make it run hotter and also possibly burn out but if you can get 230-110 or 115 volt step down you will be fine. It is just a resistive load.
  Reply With Quote
Old 20th May 2012, 11:53 PM   #4
Simon B is offline Simon B  United Kingdom
diyAudio Member
 
Join Date: Dec 2011
Location: North-East England
Quote:
Originally Posted by Simon B View Post
...You don't say......what the supply frequency is...

My mistake, you do say it's 50 Hz, and 230v. As Brian says, frequency is not a concern for a soldering iron.

Voltage however is, and in Europe there is monkey business afoot that has wider bearing than just the likely lifespan of your nice Japanese soldering irons.

The UK's supply was traditionally 240v, much of the rest of Europe, 220v. The UK still has a 240v supply, but officially, it's "230v +10%, -6%". Other European countries have "230v +6%, -10%"....so in reality 220v! But now, on a politician's desk, we all have "230v supply" Hooray! (It gets better...)

Some countries within the EEA (European Economic Area) are choosing to shift to the +10% tolerance, and with it, 240v supply. Why? Because by shifting to a higher voltage, quite surreptitiously, the increasing demand for power can be met whilst delaying upgrading infrastructure, thus saving the power companies some money.

So possibly worth exercising some care with a "230v to 115v" transformer.

On the plus side the situation is still better than it was in the UK 100 years ago. I once had a list of domestic supply standards here. There were about 400 of them. Including 600v DC.
__________________
Engineer: One who can do for 10 shillings what any fool can do for 10 pounds.
  Reply With Quote
Old 21st May 2012, 09:58 AM   #5
diyAudio Member
 
Join Date: Apr 2006
Location: Reykjavík
Huh!, Interesting.

THANK YOU for the information! I'll dig up something
  Reply With Quote
Old 21st May 2012, 02:44 PM   #6
diyAudio Member
 
Join Date: Nov 2010
Location: N.E. PA
Frequency is an issue. Although the soldering iron itself does not care, the transformer (I assume that the soldering iron assembly has a transformer in it) can have a problem on 50 Hz. As mentioned earlier, if the transformer is designed "close to the edge", it could magnetically saturate at 50 Hz. This could cause excess heating and possible failure. If you lower the voltage to 5/6 of 100 volts, or 83 volts, you are 100% safe, but then you will be low on voltage to the iron itself. Most transformers have enough iron to tolerate 50 Hz operation, but may run a bit warmer. But this assumes that you will feed it 100 volts. So make sure that the output of your 220/240 stepdown transformer is rated for 100 volts out.

paul
  Reply With Quote
Old 21st May 2012, 08:33 PM   #7
Simon B is offline Simon B  United Kingdom
diyAudio Member
 
Join Date: Dec 2011
Location: North-East England
Given that East Japan, including Tokyo & Yokohama run on 50Hz, I'd be very surprised if irons on sale in West Japan (60Hz) were incompatible. The OP's question implies, but doesn't state that there might be a transformer in the irons, or rather, presumably, their base stations?

Wrt a step-down transformer for using them on 230v supply, virtually all the world's 230v supplies run at 50Hz. Antigua and Montserrat being the main exceptions at 60Hz.

A few countries, Brazil, Peru, The Philipines and North Korea do use a 220v 60Hz supply, so your worst option would be a 220v to 115v transformer from one of these countries, plugged into a British socket -

Happy soldering!

__________________
Engineer: One who can do for 10 shillings what any fool can do for 10 pounds.
  Reply With Quote
Old 19th July 2012, 03:48 PM   #8
diyAudio Member
 
Join Date: Aug 2009
Sorry for OT. I need help.
Please advise how I should rewire the transformer terminals Accuphase P-3000 from supply 100V to 230V. It isn´t a chart or a table near the transformer. Any photo?
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Converting 50Hz to 60Hz??? Antripodean Parts 26 18th April 2009 07:39 AM
from 120V 50hz to 230v 50hz? testarossa2k Power Supplies 16 13th March 2007 01:32 PM
Looking for 230V >1KVA variac and 230V-230V mains isolation transformer offers Eva Swap Meet 1 28th July 2005 03:00 PM
Linn 50hz to 60hz? protos Analogue Source 3 24th June 2005 07:35 PM
50hz on 60hz lawbadman Power Supplies 10 21st April 2005 01:26 AM


New To Site? Need Help?

All times are GMT. The time now is 04:20 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2