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I am having trouble getting this.

I have been introduced to common mode and differential mode signals.

I assumed the inputs to a differential amplifier is an ac signal...

my instructor gave instruction on how to input such a signal to a circuit using SPICE, he used DC.

is the common mode dc while the diff mode is ac? can the diff mode be dc as well

I have been introduced to common mode and differential mode signals.

I assumed the inputs to a differential amplifier is an ac signal...

my instructor gave instruction on how to input such a signal to a circuit using SPICE, he used DC.

is the common mode dc while the diff mode is ac? can the diff mode be dc as well

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