What does the Miller effect mean?

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dozy_walia

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I have read and searched google a lot about miller effect but could not find out 1 thing?
i.e.
The capacitance doubles when there is opposite swing or opposite polarity?
I mean capacitance doubles at the tranistion or level?
 

Re: Miller effect?

ur question is not clear?
In electronics, the Miller effect describes the fact that a capacitance between input and output of an amplifier is multiplied by a factor of (1 − Av), where Av is the voltage gain of the amplifier.

Since, intuitively, a gain represents a voltage multiplication between points, any capacitor across these points will charge and discharge with a current which is multiplied by (1 − Av). In an amplifier with a negative gain, this effectively increases the apparent capacitance by a factor of (1 + | Av | ).
 

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