An electrical device that amplifies voltage between 2 input leads.

A particular type of operational amplifier where the output voltage is in proportion to the difference between the inputs. Unlike the comparator, which can based on exactly the same IC, the Op-Amp has two individual inputs instead of one input and one reference value. This use is sometimes called a proportional amplifier or subtractor.

One that has two input signal connections and zero signal reference lead. The output is the algebraic sum of the instantaneous voltages appearing between the two input signal connections.

An amplifier in which the output is in proportion to the differences between voltages applied to its two inputs.

A circuit that amplifies the difference between two input signals. The example circuit is an Op-Amp configured as a Differential Amplifier, producing an output [Vout] which is the difference between i [..]