Loss-compensated active gyrator using differential-input operational amplifiers

Prescott, Andrew

doi:10.1049/el:19660239

Cited by 65 publications

(6 citation statements)

References 3 publications

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“…Also, the circuits of [19,20] are composed of a single CCII-which can be realized by using two AD844s. OA based lossless grounded inductors [21][22][23] do not use a canonical number of passive components whereas the circuits of [21][22][23] do not need passive component matching constraints. One of [24] consists of a minimum number of passive components without requiring passive component matching conditions while it has a large-valued frequency dependent parallel resistor whose value decreases with increasing frequency.…”

Section: Comparison Of the Proposed Circuits With Previously Publishementioning

confidence: 99%

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Novel lossless and lossy grounded inductor simulators consisting of a canonical number of components

Yüce

2008

Analog Integr Circ Sig Process

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In this paper, four series lossy inductor simulators including a minimum number of active and passive components, a current feedback operational amplifier (CFOA), two resistors and a capacitor, are proposed. Also, four lossless simulated inductors using a canonical number of elements, a new CFOA, two resistors and a capacitor, are developed. All the introduced circuits do not need critical component matching constraints. Simulations achieved by means of SPICE program are added so as to demonstrate the performance.

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Section: Comparison Of the Proposed Circuits With Previously Publishementioning

confidence: 99%

“…In addition, many lossless positive grounded simulated inductors [21][22][23][24][25][26][27][28][29][30][31] and floating positive inductor simulators [32,33] were previously presented.…”

Section: Introductionmentioning

confidence: 99%

Novel lossless and lossy grounded inductor simulators consisting of a canonical number of components

Yüce

2008

Analog Integr Circ Sig Process

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“…The first circuit, suggested by Berndt and DuttaRoy (1969); DuttaRoy and Nagarajan (1970) was chosen for its simplicity since it uses only one operational amplifier and three other components. The second circuit, suggested by DuttaRoy and Nagarajan (1970); Prescott (1966) was discarded because of certain difficulties, which will be discussed below.…”

Section: Implementation Of a Pseudo-inductormentioning

confidence: 99%

Actuator Power Reduction Using L-C Oscillator Circuits

Sirohi

Chopra

2001

Journal of Intelligent Material Systems and Structures

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Piezoelectric actuators are widely used in smart structural systems to actively control vibration and noise, and to enhance performance. Because of the highly capacitive nature of these actuators, special power amplifiers, capable of delivering large currents, are required to drive these systems. The large currents result in excessive heat generation, and are a cause of concern in designing rotating actuation systems with sliprings for power transmission. In this paper, a means of reducing the current drawn from the power amplifier is investigated. This is accomplished by incorporating the actuator in a tuned L-C oscillator circuit. Non-ideal circuit performance is addressed, along with theoretical limits to possible power savings and practical difficulties in achieving them. The practical limitation of the size of a physical inductor needed for this purpose is recognized and the use of an active pseudo-inductor is investigated. This pseudo-inductor is connected in parallel with a commercially available power amplifier and reduction in current drawn from the amplifier is demonstrated.

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“…Several single-amplifier circuits have been proposed. 3 " 7 The circuit in Reference 3 realises, ideally, a lossy inductor. The circuits due to Orchard and Willson 4 and Schmidt and Lee s realise, ideally, lossless inductors and use only one capacitor (the theoretical minimum).…”

Section: Introductionmentioning

confidence: 99%

Highpass and bandpass filters using a new single-amplifier simulated inductor

Ramsey

1978

IEE J. Electron. Circuits Syst. UK

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A new single-amplifier single-capacitor circuit simulating a grounded inductor, for use in active RC highpass and bandpass filters, is discussed, and a method of compensating for the nonideal behaviour of simulated inductors of this type is presented. In contrast to known compensation methods, the compensation procedure proposed here does not seek to improve the nonideal simulated inductors, but deliberately designs the simulating circuit to have a specific biquadratic impedance function and then modifies the filter circuit so as to produce the required loss/frequency response using these biquadratic impedances instead of the original inductors. For bandpass filters the compensation is only approximate. However, for highpass filters, complete compensation can be achieved over the entire frequency range in which the gain of the amplifier can be adequately described by a single-pole model; the cost of achieving this is some increase in sensitivity. The new design procedure has been applied successfully to a 5th-order Cauer-type highpass filter; computed incremental sensitivities and some measured results are presented.

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Loss-compensated active gyrator using differential-input operational amplifiers

Cited by 65 publications

References 3 publications

Novel lossless and lossy grounded inductor simulators consisting of a canonical number of components

Novel lossless and lossy grounded inductor simulators consisting of a canonical number of components

Actuator Power Reduction Using L-C Oscillator Circuits

Highpass and bandpass filters using a new single-amplifier simulated inductor

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