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Novel Implementation of Bistable SwitchesAuthor: Apuroop kumar Reddy Anyam Date: 2019-08-20 Report no: IIIT/TH/2019/94 Advisor:Azeemuddin Syed AbstractBistability is a well-known phenomenon and is a widely applied concept in electronic switches. This is due to the fact that it has exactly two stable outputs irrespective of the range of input given. Bistability along with hysteresis is proven to be very useful concepts in building a noise immune stable circuits. But hysteresis is defined as a phenomenon where effect lags behind the applied force, hence it adds delay to the system. This work explores the possibility of building a system, followed by a circuit which can possess both bistability and noise immunity without any delay or if possible an advancement in transition time compared to a hysteretic circuit or a basic inverter. This newly mentioned phenomenon is also seen in a good number of the natural process, and it is called as proteresis. Both proteresis and hysteresis are greek origin words where proto means ahead and hyste means late. The main motivation for this work is that in nature we observe that most of the things exist in pairs like high, low; Negative logic, positive logic; cause, effect; clockwise spin, anticlockwise spin; etc. And this work explores the possibility of the opposite pair of hysteresis and it’s a possible contribution in electronics. A detailed proteretic system model is built and is electronically verified by using OP-AMPs. A similar proteretic circuit is also built in CMOS technology using 16 transistors and also a possibility of CMOS one-stage hysteretic and proteretic circuit is proposed. This thesis also proposes a new type of switch which can possess the two states as proteresis and hysteresis similar to clockwise and anticlockwise spins or low and high. And a detailed system model and circuit show how we can shift between these two states. The simulation and experimental results of this switch support each other Full thesis: pdf Centre for VLSI and Embeded Systems Technology |
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