I have been given two transformers of identical VA and voltage ratings.But one of them is 10 khz transformer and the another is 100 hz transformer. Just by inspection how would u identify which one is the high frequency transformer?
2007-02-03 18:13:05 · 2 answers · asked by rishi 1 in Science & Mathematics ➔ Engineering
The high frequency one would be a great deal smaller and/or lighter. That's because the secondary voltage is dependent on the rate of change of the magnetic field through the secondary coil. If the frequency is high, the amplitude of the magnetic field's waveform doesn't have to be very great. That means that you don't have to move a lot of flux from primary to secondary, which means that you don't need a core of big, saturation-resistant iron plates to carry it.
This is one reason we like high-frequencies for lots of things. It's not much fun to transmit power at any but short distances with, though.
2007-02-03 18:27:08 · answer #1 · answered by 2n2222 6 · 0⤊ 0⤋
The high frequency transformer is very small. You can drop them both on your foot and the one that hurts is the low frequency one.
2007-02-03 18:18:27 · answer #2 · answered by Ron H 6 · 0⤊ 0⤋