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This op amp was based on a descendant of Loebe Julie's 1947 design and, along with its successors, would start the widespread use of op amps in industry. GAP/R model P45: a solid-state, discrete op amp (1961). 1961: A discrete IC op amp. With the birth of the transistor in 1947, and the silicon transistor in 1954, the concept of ICs became a ...
Description: A circuit diagram of an instrumentation amplifier made using operational amplifiers.Combines very high input impedance, high common-mode rejection, low DC offset, and other properties used in making very accurate, low-noise measurements
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English: A Diagram of the internal structure of an simple op-amp model, showing the input and output resistances and the controlled voltage source. Note that the voltage source is connected to a possibly variable voltage, used for offset nulling .
Date/Time Thumbnail Dimensions User Comment; current: 04:14, 26 January 2009: 300 × 125 (26 KB): Inductiveload {{Information |Description=A circuit diagram of a en:non-inverting amplifier made using an en:operational amplifier.
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Referring to the above diagram, if the op-amp is assumed to be ideal, then the voltage at the inverting (-) input is held equal to the voltage at the non-inverting (+) input as a virtual ground. The input voltage passes a current V in / R 1 {\displaystyle V_{\text{in}}/{R_{1}}} through the resistor producing a compensating current flow through ...