An accurate CCII-based voltage controlled current source

In this paper, a voltage controlled current source (VCCS) providing low distortion in output signal and wide output current range is introduced. In order to obtain the high accuracy, the proposed technique employs the designed scheme to connect in feedback loop of the basic VCCS based on second generation current conveyor (CCII). This scheme consists of instrumentation and differential amplifiers and one resistor. The performances of the proposed circuit were studied through the use of PSPICE simulation program. Simulation results are agreed with the expected values.