Topic
Circuit diagram
About: Circuit diagram is a research topic. Over the lifetime, 2236 publications have been published within this topic receiving 16175 citations. The topic is also known as: electrical diagram & elementary diagram.
Papers published on a yearly basis
Papers
More filters
••
TL;DR: A hybrid modeling approach is proposed that integrates conventional biochemical kinetic modeling within the framework of a circuit simulation for in vivo behavior of phage lambda.
Abstract: Genetic networks with tens to hundreds of genes are difficult to analyze with currently available techniques. Because of the many parallels in the function of these biochemically based genetic circuits and electrical circuits, a hybrid modeling approach is proposed that integrates conventional biochemical kinetic modeling within the framework of a circuit simulation. The circuit diagram of the bacteriophage lambda lysislysogeny decision circuit represents connectivity in signal paths of the biochemical components. A key feature of the lambda genetic circuit is that operons function as active integrated logic components and introduce signal time delays essential for the in vivo behavior of phage lambda.
538 citations
••
TL;DR: A new synthesis strategy that can automate fully the path from an analog circuit topology and performance specifications to a sized circuit schematic and relies on asymptotic waveform evaluation to predict circuit performance and simulated annealing to solve a novel unconstrained optimization formulation of the circuit synthesis problem is presented.
Abstract: We present a new synthesis strategy that can automate fully the path from an analog circuit topology and performance specifications to a sized circuit schematic. This strategy relies on asymptotic waveform evaluation to predict circuit performance and simulated annealing to solve a novel unconstrained optimization formulation of the circuit synthesis problem. We have implemented this strategy in a pair of tools called ASTRX and OBLX. To show the generality of our new approach, we have used this system to resynthesize essentially all the analog synthesis benchmarks published in the past decade; ASTRX/OBLX has resynthesized circuits in an afternoon that, for some prior approaches, had required months. To show the viability of the approach on difficult circuits, we have resynthesized a recently published (and patented), high-performance operational amplifier; ASTRX/OBLX achieved performance comparable to the expert manual design. And finally, to test the limits of the approach on industrial-sized problems, we have synthesized the component cells of a pipelined A/D converter; ASTRX/OBLX successfully generated cells 2-3/spl times/ more complex than those published previously.
347 citations
••
07 Nov 1988TL;DR: The results show that binary decision diagrams (BDD) with the proposed ordering method can verify almost all benchmark circuits in less than several central processor unit (CPU) minutes, which is one hundred times faster than times reported in the literature.
Abstract: R.E. Bryant proposed a method to handle logic expressions (IEEE Trans. Comp., vol.25, no.8, p.667-91, 1986) which is based on binary decision diagrams (BDD) with restriction; variable ordering ix fixed throughout a diagram. The method is more efficient than other methods proposed so far and depends heavily on variable ordering. A simple but powerful algorithm for variable ordering is developed. The algorithm tries to find a variable ordering which minimizes the number of crosspoints of nets when the circuit diagram is drawn. This is applied to the Boolean comparison of ISCAS benchmark circuits for test pattern generation. The results show that binary decision diagrams (BDD) with the proposed ordering method can verify almost all benchmark circuits in less than several central processor unit (CPU) minutes, which is one hundred times (or more) faster than times reported in the literature. Some techniques for circuit evaluation ordering are also mentioned. >
278 citations
••
TL;DR: It is shown that a computer analysis based upon a contour-integral solution of the wave equation offers an accurate and efficient tool in the design of the planar circuit.
Abstract: Three principal categories have been known in electrical circuitry so far. They are the lumped-constant (0-dimensional) circuit, distributed-constant (1-dimensional) circuit, and waveguide (3-dimensional) circuit. The planar circuit to be discussed in general in this paper is a circuit category that should be positioned as a 2-dimensional circuit. It is defined as an "electrical circuit having dimensions comparable to the wavelength in two directions, but much less thickness in one direction." The main subject of this paper is the computer analysis of an arbitrarily shaped, triplate planar circuit. It is shown that a computer analysis based upon a contour-integral solution of the wave equation offers an accurate and efficient tool in the design of the planar circuit. Results of some computer calculations are described. It is also shown that the circuit parameters can be derived directly from Green's function of the wave equation when the shape of the circuit is relatively simple. Examples of this sort of analysis are also shown for comparison with the computer analysis.
207 citations