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Basic Op Amp Differential Amplifier

Source: InternetPublisher:风向西瓜 Keywords: Amplifiers power supplies and other power circuits Updated: 2020/07/19

Basic Op Amp Differential Amplifier 

 

In most cases, R1 is equal to R2 and R3, and has the same value as R4. These equations are not always true, but they greatly simplify circuit design in most practical applications. In any case, for a true differential amplifier, the ratios R3:R1 and R2:R4 must be equal.

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