A afirmação descreve um arranjo experimental composto
por um amplificador operacional utilizado como subtrator.
“An ideal operational amplifier acting differentially as a
subtractor, has an unitary gain. In this case, the output signal is
given by the difference from the voltage signal connected to the
negative terminal of the op-amp to the voltage signal connected
to the positive one. When the voltage signal connected to the
negative terminal is fifty volts (positive) and the voltage signal
connected to the positive terminal is one hundred and fifty volts
(negative), the output signal is two hundred volts (positive).”
O texto descreve um arranjo experimental composto por um
amplificador operacional na configuração