IEEE 165:1977 pdf download.IEEE Standard Definitions of Terms for Analog Computers.
INTRODUCTORY NOTE: Boldface is used for alphabetical entries and in the body of the essay at the point where the boldface term is being defined.
Italics are used only where the meaning and context may not be clear and where the terms are defined elsewhere.
absolute-value circuit. A transducer or circuit that produces an output signal equal in magnitude to the input signal but always of one polarity.
accuracy. (1) Conformity of a measured value to an accepted standard value. (2) A measure of the degree by which the actual output of a device approximates the output of an ideal device nominally performing the same function. accuracy, dynamic. Accuracy determined with a time-varying output.
accuracy, static. Accuracy determined with a conitant output.
amplifier. A device that enables an input signal to control a source of power and thus is capable of delivering at its output a reproduction r analytic modification of the essential characteristics of the signal (see Ref Ill).
amplifier, buffer. An amplifier in which the reaction of the output-load-impedance variation on the input circuit is reduced to a constant for isolation purposes on the input circuit (see Ref (21). See also unloading amplifier.’
amplifier, high-gain dc. An amplifier that is capable of amplification substantially greater than required for a specified operation throighout a frequency band extending from zero to some maximum. Also, an operational amplifier without feedback circuit elements. See also operational amplifier.
amplifier, integrating. An operational amplifier that produces an output signal equal to the time integral of a weighted sum of the input signals.
amplifier, relay. An amplifier that drives an electromechanical relay.
amplifier, servo. An amplifier, used a part of a servomechanism, that supplies power to the electrical input terminals of a mechanical actuator.
amplifier, summing. An operational amplifier that produces an output signal equal to a weighted sum of the input signals.
NOTE: In an analog computer, the term summer is synonymous with summing amplifier.
amplifier, unloading. An amplifier that is capable of reproducing or amplifying a given voltage signal while drawing negligible current from the voltage source.
NOTE: In an analog computer, the term buffer amplifier is sometimes used as a synonym for unloading amplifier. in an incorrect sense, since a buffer amplifier draws sig nificant current, but at a constant load impedance (seen at the input).
analog (ADJ). Pertaining to representation by means of continuously variable physical quantities, for example, to describe a physical quantity, such as voltage or shaft position, that normally varies in a continuous manner, or devices such as potentiometers and synchros that operate with such quantities.IEEE 165 pdf downlolad.