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-power-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) 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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