What is the relationship of frequency with transformers-- step up and step down?

Question

What is the relationship of frequency with transformers-- step up and step down? I think I understand if it's increased it'll lose efficiency, but what happens if it is decreased to 0 Hz?

V1 169.71 Vpkc T1 1000 Hz 200 R1 Circuit 1 V2 169.71 Vplk 1000 Hz 0 T2 Circuit 2 R5 V320 169.71 Vpk 1000 Hz T3 200 R3 0 Circuit 3 Pri Ca R6 V420 T4 +169.71 Vpk ~) 1000 Hz R4 0 Circuit 4 0 Questions: 1. Explain if the results would change if the frequency of the input voltag e was increased e was decreased to 0 Hz ration of the circuit? 3 If the output resistor was shorted to zero ohms, then how would this affect the ope

Explanation / Answer

The transformer works on the principle of magnetic field induction.

The varying current in one circuit creates a varying magnetic field hence a varying flux through the other coil. This induces a varying voltage in the second coil. If the frequency is itself 0 Hz, there is no variation at all. So no voltage will be produced on the second coil.

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