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23 Nov 2019
A transformer is to be used to provide power for a computer diskdrive that needs 5.4 V (rms) instead of the 120 V (rms) from thewall outlet. The number of turns in the primary is 395, and itdelivers 500 mA (the secondary current) at an output voltage of 5.4V (rms).
(a) Should the transformer have more turns in the secondarycompared to the primary, or fewer turns?
There should be fewer turns in the secondary.
(b) Find the current in the primary.
22.5 mA
(c) Find the number of turns in the secondary.
turns?
A transformer is to be used to provide power for a computer diskdrive that needs 5.4 V (rms) instead of the 120 V (rms) from thewall outlet. The number of turns in the primary is 395, and itdelivers 500 mA (the secondary current) at an output voltage of 5.4V (rms).
(a) Should the transformer have more turns in the secondarycompared to the primary, or fewer turns?
There should be fewer turns in the secondary.
(b) Find the current in the primary.
22.5 mA
(c) Find the number of turns in the secondary.
turns?
30 Jun 2023
