استعرض تاريخ النشر
الآن تُعرض المواد 1  20 من 3085

Thermal degradation of epoxidized polydienes III. Thermal behaviour of some crosslinked epoxidized polydienes
(Kluwer Academic Publishers, 1982)DTA and TG has been used to study the thermal stability of crosslinked epoxidized polydienes. Crosslinking has been achieved using some derivatives of hydroxycarbostyrils, triazines and phthalimide. The new properties ... 
Approximate method for hand computation of nonlinear distortion performance of varactor tuning circuits
(1986)The nonlinear distortion performance of varactor tuning circuits excited by an arbitrary number of input sinusoids with arbitrary amplitudes is analysed using an exponential series representation of the charge/voltage ... 
A Family of Second Order Methods for Variable Coefficient Fourth Order Parabolic Partial Differential Equations
(1987)A family of second order methods is developed for the numerical solution of variable coefficient fourth order parabolic partial differential equations in one space variable. The methods arise from a three point recurrence ... 
Two new minimumcomponent wienbridge oscillators using currentconveyors
(1987)Two new Wienbridge oscillator circuits are presented. The circuits use the minimum number of active and passive components. The circuits enjoy low sensitivities, and are attractive for integration. Experimental results ... 
Two Minimum Component CCIIBased RC Oscillators
(1987)Two minimumcomponent RCsinusoidal oscillator Circuits using current conveyors are proposed. Each circuit uses a single current conveyor, two resistors, and two capacitors. The two circuits enjoy low sensitivity ... 
Hard limiter amplitude modulators and demodulators
(1987)The response of an ideal hard limiter to an input consisting of a multisinusoidal signal plus gaussian noise is considered. The feasibility of using devices exhibiting the ideal hard limiter characteristic for amplitude ... 
Fusion temperature effects on the annealing behaviour of 45V2O5 � 55GeO2 glass
(1987)The effects of a thermal treatment at a temperature Tina = 50�C for a series of binary V2O5 GeO2 glasses fused and equilibrated at various temperatures (T) in air were measured. T ranged from 1000�C to 1350�C. During the ... 
Identification of twoamplifier activeR sinusoidal oscillators
(1987)Using a unified representation for the 2amplifier activeR oscillators, new circuits of this class of oscillators can be discovered systematically. The experimental results obtained from six new circuits are presented in ... 
Phonon Combination Bands in the Far?Infrared Spectrum of K0.5Rb0.5I Mixed Crystals
(1987)[No abstract available] 
Saturation effects in threephase induction motors
(1987)An analytical method for the calculation of the effect of magnetic saturation on the leakage reactance of threephase induction motors is developed and confirmed by experiment. The method is based on assuming an equivalent ... 
Research note: A new OTAbased activeC oscillator
(1987)A new resistorless activeC OTAbased oscillator is presented. The circuit uses four OTAs and two capacitors. The oscillation frequency can be electronically tuned without affecting the condition of oscillation. The circuit ... 
Modules with locally linearly ordered distributive hulls
(1987)Let R be a commutative ring with identity and M, N are Rmodules with M ? N. Then M ? N is said to be distributive if M?(X + Y)=(M ? Y) + (M ? Y), for all submodules, X, Y of N. The extension M ? N is said to be supporting ... 
Modelling DC characteristics of MOSFET
(1987)An empirical formula is presented for the currentvoltage characteristics of the metal oxide semiconductor field effect transistor (MOSFET). The three parameters of the formula can be calculated easily from separate regions ... 
Twominimumcomponent single current conveyor RC oscillators
(1987)Two minimumcomponent RCsinusoidal oscillator circuits using current conveyors are presented. Each circuit uses a single current conveyor, two resistors and two capacitors. The two circuits enjoy low sensitivities. � 1987, ... 
Optical properties of GaAs
(Kluwer Academic PublishersPlenum Publishers, 1987)The optical absorption coefficient and complex dielectric response function of pure GaAs is measured at ambient temperature in the range of 10020000cm1 using two different techniques. The results reported here are in ... 
Nonlinear distortion performance of narrow stripegeometry lasers
(Kluwer Academic PublishersPlenum Publishers, 1988)Using the theoretical normalised currentlight characteristic of a narrow stripegeometry laser, an empirical formula is developed for the normalised lightcurrent characteristic. Using this formula, closedform expressions, ... 
Research note two novel voltage(current) controlled integrable oscillators
(1988)Two novel voltage(current) controlled oscillator circuits are presented. Each circuit uses a single operational amplifier, a single operational transconductance amplifier, and either a single resistor or a single capacitor. ... 
A note on the intermodulation performance of SCPC satellite links using a dominant carrier
(1988)The intermodulation performance of satellite links using a dominant carrier sidebyside with many small SCPC/FDMA carriers is considered. Closedform expressions which are easy to evaluate are obtained for the amplitudes ... 
On the Prediction of Transmission Errors of MOSFET Switches
(1988)A simple formula is presented for the impedance error of a MOSFETresistor transmission gate. Using this formula, closedform expressions are derived for the output products resulting from switching sinusoidal input signals. ...