phase sensitive detector described here has two principal applications: a- to produce a d.c out put proportional to- the amplitude of an incoming a,c signal and indicate, by the outut polarity, the phase of the signal with respect to an internal reference. b- to detect the presence of a signal of known phase and frequency which would otherwise be lost in «background noise» and to measure its am...

A simple and novel design for a current comparator is proposed. The proposed current comparator utilizes the concept of adjustment of switching threshold voltage of an inverter employed in the circuit design to develop a reference current for the purpose of current comparison. The proposed circuit was simulated using 0.18 μm TSMC CMOS technology and satisfactory results were obtained.

Residual impedance correction in impedance analyzers when using an asymmetrical test fixture needs three reference measurements, usually open circuit, short circuit, and load (meaning an impedance close to the impedance under test). This paper provides an uncertainty estimate for impedance measurements that apply a simple open/short correction in spite of using an asymmetrical test fixture. Exp...

In this paper we describe a new architecture of a frequcncy-lo-voltage convcrtcr VVC) :md iLs high frequency intcgrated applications. The circuit is of a rcduccd complexity and its CMOS implcmcnlalion requires a very small area. Besides its small integration arca, thc circuit is vcry fast and has many inlcrcsting high frequcncy applications. This FVC is used to build an integrated high-precisio...

LaBerge (1997) proposes that underlying attention and self-awareness is a triangular circuit involving interconnected posterior cortical, thalamic and prefrontal neural ensembles. While the target paper makes only passing reference to it, the reticular nucleus of the thalamus is an integral part of the triangular circuit he posits. Indeed, it is essential to a complete understanding of his model.

In this paper we address the problem of output tracking for a Chua’s circuit. The reference waveform is generated by another Chua’s circuit. This problem is of interest in chaos communications. The tracking problem can be formulated in the well–known frame of output regulation, allowing also the rejection of a modelled disturbance acting on the system. Copyright c ©2005 IFAC

This work proposes a fully-digital interface circuit for the measurement of inductive sensors using a low-cost microcontroller (μC) and without any intermediate active circuit. Apart from the μC and the sensor, the circuit just requires an external resistor and a reference inductance so that two RL circuits with a high-pass filter (HPF) topology are formed. The μC appropriately excites such RL ...

The paper derives a generalised operational equivalent circuit for induction machines starting from fundamental principles in any arbitrary rotating reference frame. Directly measurable parameters are used in this equivalent circuit From this generalised model, the equations for any reference frame are derivable as particular cases. The model presented is versatile as it can be used for any ope...

Experimental observations of an almost symmetric electronic circuit show complicated sequences of bifurcations. These results are discussed in the light of a theory of imperfect global bifurcations. It is shown that much of the dynamics observed in the circuit can be understood by reference to imperfect homoclinic bifurcations without constructing an explicit mathematical model of the system.

This paper describes the design of a bandgap reference, implemented in 32 nm FinFET technology. The paper introduced new method for increasing stability of output voltage of bandgap circuit. In the proposed architecture extra feedback is used for setting the output voltage in fixed voltage. This feedback makesbandgap circuit more stable and speedy employing back gate biasing of the FinFET devic...