A Novel Versatile Precision Full-Wave Rectifier

A New Precision Peak Detector/Full-Wave Rectifier

“…From Figures 7(a) and (b) we can conclude that the signal at the output of the proposed circuit contains less ripple voltage in comparison with wave form of the previously reported circuits [13,21,22,30], especially at a higher frequency range. This improvement is due to the absence of peak-value-to-minimum-value variation taking place twice in the output waveform for one cycle, in which one diode conducts for one half cycle and other diode conducts for the other half cycle.…”

“…For better performance of a rectifier, the value of the ripple should be very low [21,22]. Based on the obtained results, Figure 9, the ripple voltage of the proposed circuit is much lower than in previously reported circuits of rectifiers [13,22,23,30,32].…”

“…It was taken R = 1.59 M and C = 0.002 F at f = 50 Hz, and R = 796  and C = 0.002 F at f = 100 kHz to maintain a 90˚ phase shift of the all-pass filter [21,22]. Based on Figure 8, it can be concluded that the proposed circuit retains a linear character in a wide frequency range, much better that circuits reported in [13,15,31].…”

“…The THD of the proposed circuit is −16.5 dB at 50 Hz and −21 dB at 1 MHz with an input signal of 1 V. The THD is much lower than in [21,22,32] (the THD of previously reported circuit slowly increases with frequency), because for higher frequency ranges, the switching ON and OFF of diodes becomes sluggish due to its higher impendence and more distortions. …”

“…The circuit consists of five diode-connected MOS transistors, phase shifter, together with two dual-output CCs [18][19][20] The phase shift of the input signal is realized using an all-pass filter [21,22]. The phase of the input sinusoidal signal:…”