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When more accuracy is desired in modelling the diode's turn-on characteristic, the model can be enhanced by doubling-up the standard PWL-model. This model uses two piecewise-linear diodes in parallel, as a way to model a single diode more accurately. PWL Diode model with 2 branches. The top branch has a lower forward-voltage and a higher ...
Diode logic (or diode-resistor logic) constructs AND and OR logic gates with diodes and resistors. An active device ( vacuum tubes with control grids in early electronic computers , then transistors in diode–transistor logic ) is additionally required to provide logical inversion (NOT) for functional completeness and amplification for voltage ...
For example, inversion-layer mobility modeling, or the modeling of mobility and its dependence on physical parameters, ambient and operating conditions is an important topic both for TCAD (technology computer aided design) physical models and for circuit-level compact models. However, it is not accurately modeled from first principles, and so ...
Still, teams of designers following a systematic approach with intelligently guided computer simulation are becoming increasingly common for more complex designs. In integrated circuit design automation , the term "circuit design" often refers to the step of the design cycle which outputs the schematics of the integrated circuit.
The Shockley equation doesn't model this, but adding a resistance in series will. The reverse breakdown region (particularly of interest for Zener diodes) is not modeled by the Shockley equation. The Shockley equation doesn't model noise (such as Johnson–Nyquist noise from the internal resistance, or shot noise).
A noise model that is used in telecommunications to model the effects of various random processes. adjustable-speed drive Control for a motor that allows more than one speed to be selected. advanced z-transform A mathematical technique used to model and analyze digital systems. affinity laws
The first documented computer architecture was in the correspondence between Charles Babbage and Ada Lovelace, describing the analytical engine.While building the computer Z1 in 1936, Konrad Zuse described in two patent applications for his future projects that machine instructions could be stored in the same storage used for data, i.e., the stored-program concept.
The term description is used as a reserved technical term to mean records of empirical observations; that is, descriptions record knowledge that originates in or is based on observations or experience. The term model is used to mean an idealization of an entity or state of affairs. That is, a model constitutes an idealized system of objects ...