Bibliography on Nullors and Their Applications in Circuit Analysis, Synthesis and Design

A bibliography on research work related to nullors and their applications in circuit analysis, synthesis and design, covering the period 1961–2000, is given.     

Floating ideal FDNR using only two current conveyors

A new floating ideal FDNR realisation is presented which requires only two current conveyors (CC) as opposed to previously known schemes which require three or more CCs.     

Systematic generation of OTA-C sinusoidal oscillators

The authors outline a method for generating all possible, canonic, linearly tunable, OTA-C sinusoidal oscillators systematically.<>     

Two new canonic single-CFOA oscillators with single resistor controls

Although a number of single current feedback op-amps (CFOA)-based single-resistance-controlled oscillators (SRCO) have appeared in earlier literature, only six of them are canonic (i.e., requiring only two capacitors and only three resistors). The object of this brief is to add to this list two new canonic single-CFOA-based SRCO configurations. An evaluation of these two new circuits has been carried out and their workability of has been confirmed by experimental results based upon AD844 CFOAs.     

Single op-amp sinusoidal oscillators suitable for generation ofvery low frequencies

The authors present some op-amp-based single-element controlled sinusoidal oscillator structures which can generate very low frequencies (VLF). In contrast to earlier VLF oscillators which have large frequency of the oscillations sensitivities and/or require two to five op-amps, the proposed circuits make it possible to generate VLF oscillations in a minimally sensitive manner while requiring only a single op-amp. The experimental results prove the validity of the theoretical formulations     

Active simulation of inductors using current conveyor

Some new active networks are proposed for the simulation of grounded and floating inductors, employing only one capacitor, two or three resistors and the second-generation current conveyor as the active element.     

New voltage controlled oscillators using CFOAs

In this paper, some new current feedback operational amplifier (CFOA)-based voltage-controlled oscillators (VCOs) have been introduced. The proposed circuits offer a number of advantageous features over previously known CFOA-based VCOs. The workability of the presented circuits has been demonstrated using AD844 CFOAs and BFW10 FETs.     

Inverse active filters employing CFOAs

New configurations for realizing inverse lowpass, inverse bandpass, inverse highpass and inverse bandreject filters using commercially available current feedback op-amps (CFOA) with an accessible z-terminal such as AD844 are presented. The workability of the proposed circuits has been confirmed by experimental results employing AD844 type CFOAs.