Minimum component SRCO and VFO using a single DVCCC

Abstract

Two oscillator topologies each employing a single differential voltage complementary current conveyor (DVCCC) are presented. The first oscillator uses a single active element, five passive components, grounded capacitors, has independent control of frequency and condition of oscillation. It has a current mode output and can be extended to provide a voltage mode output. It combines all the features of the current state-of-art oscillators. The second oscillator uses a single DVCCC, four passive elements, grounded capacitors and provides independent control of frequency. This oscillator not only has all the desired oscillator features, but requires lesser passive components. Theoretical analysis of these oscillators was verified with SPICE simulations.

Voltage-mode quadrature sinusoidal oscillator with current tunable properties

“…Single DDCC based SRCOs (invented using genetic algorithm) in [14] and [15] (Circuits 1-5) employ floating capacitors and which are not favorable from integration point of view. Aggarwal et al later proposed a differential voltage current conveyor (DVCC) [16] based SRCO in [17], which was canonic and used two grounded capacitors, however, the circuit along with other aforementioned DDCC/DVCC/DDCCCFA based oscillators lack any inherent electronic tunability to the circuit parameters. On the other hand, a minimal SRC realization of QO with current tunable oscillation frequency is proposed in this letter.…”

Dual-Mode Controlled Pulse Width Monostable Multivibrator Using DVCCs

“…By substituting (9) into (6), the pulse width T VCM for the VCM can be derived using (10) and the voltage-tuned parameter V TU can be de¯ned as (11). Equation (10) indicates that the proposed circuit provides a voltage-controlled solution in which the pulse width can be changed by adjusting the voltage-tuned parameter V TU .…”

On the "Evolvable Hardware" Approach to Electronic Design Invention

“…This is so far the only work with results published on their own merit in analog design journals. The authors have invented 18 new oscillators, which have been spread over 3 publications [2,3,13] in analog journals.…”