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LTspice is a SPICE-based analog electronic circuit simulator computer software, produced by semiconductor manufacturer Analog Devices (originally by Linear Technology). [2] It is the most widely distributed and used SPICE software in the industry. [ 6 ]
Schematic of Spice Gummel–Poon model NPN. The Gummel–Poon model is a model of the bipolar junction transistor.It was first described in an article published by Hermann Gummel and H. C. Poon at Bell Labs in 1970.
The group delay and phase delay properties of a linear time-invariant (LTI) system are functions of frequency, giving the time from when a frequency component of a time varying physical quantity—for example a voltage signal—appears at the LTI system input, to the time when a copy of that same frequency component—perhaps of a different physical phenomenon—appears at the LTI system output.
2008 – LTspice IV released. [2] It ran on Windows 2K, XP, Vista, 7. A native macOS 10.7+ application was introduced in 2013. 2016 – LTspice XVII released. [2] It ran on 32 or 64-bit Windows 7, 8, 8.1, 10; and macOS 10.9+. 2023 – QSPICE beta released. [4] Initially, it is designed to run on Windows 10 and 11.
An LTSpice simulation of the non-linearized VCR design verifies that the JFET resistance changes with a change in gate-to-source voltage (V GS). In the simulation (below), a constant input voltage is applied (the VDC supply is set to 4 volts), and the gate-to-source voltage is reduced in steps, which increases the JFET drain-to-source resistance.
CircuitLogix electronics simulation software.. Electronic circuit simulation uses mathematical models to replicate the behavior of an actual electronic device or circuit. . Simulation software allows for the modeling of circuit operation and is an invaluable analy
In the forward active region the Early effect modifies the collector current and the forward common-emitter current gain (), as typically described by the following equations: [1] [2]
Three 1N4148 diodes in glass DO-35 axial package. The black band on the right is the cathode side. Diode schematic symbol vs cathode marking on the package.. The 1N4148 is a standard silicon switching signal diode.