Patent ID: 9654054
Date: 2017-05-16
CPC Classifications: G01R,H03C,H03F,H03K

Claim:
1. A signal conditioning circuit, comprising: a forward module having a forward input to receive a forward input electrical signal and a forward output to output a forward output electrical signal, the forward module being configured to have a substantially instantaneous response and an inverting forward gain defined as a ratio of magnitudes of forward output electrical signals to forward input electrical signals; an input summation module including a first sum input coupled to a source of an input electrical signal, a second sum input, and a total sum output coupled to the forward input of the forward module to produce the forward input electrical signal; and a reverse module including a reverse input to receive a reverse input electrical signal and a reverse output to output a reverse output electrical signal, the reverse module being configured in anti-parallel with the forward module by coupling the reverse input to the forward output and by coupling the reverse output to the second sum input, and to have a substantially instantaneous response and a non-inverting reverse gain defined as a ratio of magnitudes of reverse output electrical signals to reverse input electrical signals; wherein the forward output electrical signal represents an analogue of the forward input electrical signal multiplied by the inverting forward gain when a magnitude of the forward output electrical signal is within a predetermined region of a linear operating range of the forward module, and wherein the first sum input exhibits an impedance of substantially zero ohms if the input electrical signal is an input electrical current signal, and of substantially infinite ohms if the input electrical signal is an input voltage signal.