The paper presents a completely new realization of peak detector/full-wave rectifier of input sinusoidal signals, employing four CCCIIs (controlled current conveyors), metal-oxide-semiconductor transistors and single grounded capacitor, without any external resistors and components matching requirements. The circuit gives a DC output voltage that is the peak input voltage over a wide frequency range, with a very low ripple voltage and low harmonic distortion. The proposed circuits use an all-pass filter as a 90° phase shifter of the square value of the processed input signal. The proposed circuit is very appropriate to further develop into integrated circuits. To verify the theoretical analysis, the circuit PSpice simulations has also been included, showing good agreement with the theory.
Keywords:
Controlled current conveyor (CCCII), controllable all-pass filter, harmonic distortion, precision peak detector, ripple voltage
