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In Reply to: RE: Frequency problem (50Hz & 60Hz) posted by chiauran@yahoo.com on November 15, 2010 at 00:53:04
The issue is the power supply transformer in your amps. The coupling across a transformer varies directly with the frequency so your transformer will be running at 50/60 or 83% efficiency. So with 240 in it will output about 90 volts. You may have a problem. Ask the manufacturer.
We'll have to agree to disagree about global warming until the next global cooling scare comes along
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Transformers don't care about line frequency unless the core is too small to support the line voltage at the line frequency. 50 Hz requires the core to swing more magnetic domains to support the line voltage compared to 60 Hz. This takes a more expensive core alloy, or more mass of the same core alloy.
Note that this is why there are so many switching power supplies. The very high switching frequency means much smaller (and cheaper) transformers can be used.
Most line transformers these days are made to work at 50 Hz so that manufacturers do not have to have parallel inventories for 50 and 60 Hz applications.
What I wrote would only be true if the core was at the edge of saturation. The coupling issue really only rears its head with RF air core stuff. Sorry.
We'll have to agree to disagree about global warming until the next global cooling scare comes along
The only thing that will happen is the transformers will run hotter at 50hz vs. 60hz. There output voltages will basically not be affected
Alan
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