![]() ![]() Instrumentation amplifier’s final output Vout is the amplified difference of the input signals applied to the input terminals of op-amp 3.Let the outputs of op-amp 1 and op-amp 2 be Vo1 and Vo2 respectively. These three op-amps together, form an instrumentation amplifier. The op-amps 1 & 2 are non-inverting amplifiers and op-amp 3 is a difference amplifier. ![]() The instrumentation amplifier using op-amp circuit is shown below.
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