Changing the line frequency in the power supply

[raydavis1]

Most circuit get powered by 115vac at 60hz. If I change the line frequency from 60hz to 400hz or 800hz, what will happen to the circuit board?

Would have to bypass the internal power supply to apply an external power supply to change the line frequency to test the circuit board.

The line frequency sets what for a design?

 

[Vbase]

The transformer will be cooler.
The DC will drop more at high currents.
Might be audible in audio circuits.
The line frequency effects the transformer and the smoothing caps.

 

[KlausST]

Hi,

The transformer will be cooler.

Why?

Klaus

 

[Vbase]

Higher inductance; less current. Less current less copper and core loses (core loses isn't always true).
Same reason transformer for 20KHz will get hot on 50Hz.