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2 Annals of Computer Science and Information Systems

2 2017

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Realization of Colpitts Oscillator using second generation current controlled current conveyor

Joshi Manoj, Bhatt Vivek, Ranjan Ashish, Benjwal Pramod

Annals of Computer Science and Information Systems

2017

Vol. 10

49--52

An inductor-less tunable Colpitts oscillator using second generation current controlled current conveyor (CCCII) is implemented. The circuit uses a CCCII and three grounded capacitors. The passive inductor has been replaced by an active inductor [14] connected to the ground. Thus the absence of external resistor and an inductor in the circuit makes it more complacent for IC Design. The frequency of oscillation can easily be electronically adjusted. The PSPICE simulation results have been deduced. The theoretical results are verified with the parameters of BJT PR100N (PNP) and NR100N (NPN) using PSPICE simulation tool.

OTRA Based Second Order Universal Filter and its optimization like Butterworth, Chebyshev and Bessel

Bhatt Vivek, Benjwal Pramod, Joshi Manoj

Annals of Computer Science and Information Systems

2017

Vol. 10

143--150

This research work brings operational transresistance amplifier (OTRA) based second order universal filter, with three main filter optimizations like Butterworth, Chebyshev and Bessel. The universal filter offers all five sections of filter responses likes: Low-Pass, High-Pass, Band-Pass, Band-Rejection and All-Pass. Design is based on the RC-RC decomposition technique. Finally, simulation results are performed to verify the theoretical results using ORCAD 10.5 circuit simulator.