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LM317 with heat sink. The LM317 is an adjustable positive linear voltage regulator.It was designed by Bob Dobkin in 1976 while he worked at National Semiconductor. [1]The LM337 is the negative complement to the LM317, which regulates voltages below a reference.
The following is a list of LM-series integrated circuits. Many were among the first analog integrated circuits commercially produced since late 1965; [1] some were groundbreaking innovations [opinion]. As of 2007, many are still being used. [2] The LM series originated with integrated circuits made by National Semiconductor.
Often, an equivalent circuit is sought that simplifies calculation, and more broadly, that is a simplest form of a more complex circuit in order to aid analysis. [1] In its most common form, an equivalent circuit is made up of linear, passive elements. However, more complex equivalent circuits are used that approximate the nonlinear behavior of ...
A simple transistor regulator will provide a relatively constant output voltage U out for changes in the voltage U in of the power source and for changes in load R L, provided that U in exceeds U out by a sufficient margin and that the power handling capacity of the transistor is not exceeded.
Single-chip AM radio integrated circuit from 1972. LM317: Adjustable 1.5 A positive voltage regulator (1.25 V-37 V) [8] LM13700: Two current controlled operational transconductance amplifiers (OTA), each having differential inputs and a push-pull output. LM393 No Dual Differential Comparator [9] LM358: No Low power, wide supply range dual op ...
[7] [10] He also contributed significantly to early work in electronic ignition circuits at Ford Sci. Labs, found in all modern-day vehicles. He authored or co-authored the following books: RCA Laboratories Transistor I Book. RCA Laboratories, 1956. Differential Amplifiers. New York, Wiley-Interscience, 1970, ISBN 0-471-29724-0.
Because the output voltage is by definition fixed around 1.25 V for typical Si bandgap reference circuits, the minimum operating voltage is about 1.4 V, as in a CMOS circuit at least one drain-source voltage of a field-effect transistor (FET) has to be added. Therefore, recent work concentrates on finding alternative solutions, in which for ...
Size comparison of BJT transistor packages, from left to right: SOT-23, TO-92, TO-126, TO-3 3D model of TO-3 package. In electronics, TO-3 is a designation for a standardized metal semiconductor package used for power semiconductors, including transistors, silicon controlled rectifiers, and, integrated circuits.
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