A 60Hz transformer on 50Hz will heat up more and the current rating will be reduced by 20% but the voltage out will not be affected. A 50Hz transformer used on 60Hz will run cooler but otherwise normal operation. As far as power supplies, most switching power supplies will work on both 120 & 230 V, some have switches, some are automatic. All multi voltage power supplies will work with 50 or 60 Hz I have an Astron 20 amp switcher, very RF quiet. Light weight, work on both voltage & Hz.
_____ From: BVARC [mailto:[email protected]] On Behalf Of Michael Monsour via BVARC Sent: Sunday, February 21, 2016 7:50 AM To: BRAZOS VALLEY AMATEUR RADIO CLUB Cc: Michael Monsour; Kevin Thornsberry Subject: Re: [BVARC] Power Supply for Overseas Use This is an interesting question... For 35 years I worked on equipment made in Australia and later France For a transformer made for 60Hz operation and using it on 50Hz the output will be approximately 80% A 50Hz transformer will see a voltage increase of approximately 120% using 60 Hz. Which is what I experienced on Australian built equipment. On Astron linear power supplies the voltage spec does not say anything about frequency. Before purchasing anything , one needs to see what the factory spec says. M Monsour AC0TX On Sun, Feb 21, 2016 at 2:16 AM, Jon Noxon via BVARC <[email protected]> wrote: Elecraft now sells the PowerWerx switcher after recommending them to any who asked (I did when I ordered my K3), which has switched adjustment for 120/240 V input. Line Frequency is not relevant. This is an RF quiet PS and uses the IEC power cord which you would get locally (standard desktop computer power cable). The PS is available from the usual sources. Mine is the one with the meters, but they are not really needed. I've owned it for almost three years without a hint of trouble. An equivalent linear PS will be much larger and heavier. See http://www.powerwerx.com/power-supplies/powerwerx-30-amp-desktop-switching-p ower-supply-powerpoles.html Jon KF5TFJ On Sat, Feb 20, 2016 at 11:23 PM, Scott Mckee via BVARC <[email protected]> wrote: Kevin, I lived in Germany 1989-91. I didn't find any problems using appropriate voltage transformers. Many power supplies now have a wide input range so you only need to get the correct plug for that area. The frequency difference might cause a problem with some time based devices. Have a great trip! Scott, nt5sm On Feb 20, 2016, at 22:31, Kevin Thornsberry via BVARC <[email protected]> wrote: I would like to find a power supply for overseas use (Angola). Voltage there is 220v 50 Hz. I will have a step down transformer which will drop the line voltage to 110v but I believe it will still be at 50 Hz. Will this be an issue for most power supplies built for use in the US (110v 60 Hz)? Thanks. -- Kevin Thornsberry (W5KLT) (832) <tel:%28832%29%20370-6996> 370-6996 _______________________________________________ BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org _______________________________________________ BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org _______________________________________________ BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
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