High Quality Content by WIKIPEDIA articles! Three kinds of devices are used in electronics: generators , converters and loads . Most frequently, they use voltage as input/output quantity.In some cases, there is a need for converters having current input and voltage output. A typical situation is the measuring of a current using instruments having voltage inputs. A current-to-voltage converter is a circuit that performs current to voltage transformation. In electronic circuitry operating at signal voltages, it usually changes the electric attribute carrying information from current to voltage. The converter acts as a linear circuit with transfer ratio k = VOUT/IIN, called the transimpedance, which has dimensions of . That is why the active version of the circuit is also referred to as a transresistance or transimpedance amplifier.Typical applications of current-to-voltage converter are measuring currents by using instruments having voltage inputs, creating current-controlled voltage sources, building various passive and active voltage-to-voltage converters, etc.