Question Pool -- Category E5I

What characteristic of optoisolators is often used in power supplies?
A.
They have a low impedance between the light source and the phototransistor
B.
They have a very high impedance between the light source and the phototransistor
C.
They have a low impedance between the light source and the LED
D.
They have a very high impedance between the light source and the LED

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