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Old 17th February 2013, 03:16 PM   #11
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Location: UK
SMPS - Switch Mode Power Supply.

The AC voltage applied is often very high frequency, 100KHz is not unusual these days. At these frequencies the core material ceases to be iron and is usually a ferrite compound, but more importantly, the number of turns per volts are drastically reduced.

Such a transformer cannot be used at 50/60Hz.
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Old 20th February 2013, 01:42 AM   #12
ehous is offline ehous  United States
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Join Date: Jul 2006
Follow up: it requires 50vac @ 20khz...

I am hoping they can either come up with a supply for me to buy or a schematic of what they use. I imagine designing this my self is nearly impossible from Internet data sheets. Everything I can find is dc output...
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Old 20th February 2013, 02:45 PM   #13
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Designing a 20kHz SMPS is not too difficult, especially at the low voltage of 50V.

They become very difficult to design at higher frequencies, higher power and higher voltages.

Try looking at the TL494 datasheet for ideas.

Last edited by KatieandDad; 20th February 2013 at 02:48 PM.
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