comparateur
Device that compares two voltages or currents
Nº Q1164179 ★★★
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comparateur
Device that compares two voltages or currents
In electronics, a comparator is a device that compares two voltages or currents and outputs a digital signal indicating which is larger. It has two analog input terminals V + {\displaystyle V_{+}} and V − {\displaystyle V_{-}} and one binary digital output V o {\displaystyle V_{\text{o}}} .
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In electronics, a comparator is a device that compares two voltages or currents and outputs a digital signal indicating which is larger. It has two analog input terminals V + {\displaystyle V_{+}} and V − {\displaystyle V_{-}} and one binary digital output V o {\displaystyle V_{\text{o}}} . The output is ideally V o = { 1 , if V + > V − , 0 , if V + < V − . {\displaystyle V_{\text{o}}={\begin{cases}1,&{\text{if }}V_{+}>V_{-},\\0,&{\text{if }}V_{+}<V_{-}.\end{cases}}} A comparator consists of a specialized high-gain differential amplifier. They are commonly used in devices that measure and digitize analog signals, such as analog-to-digital converters (ADCs), as well as relaxation oscillators.
Texte : Wikipédia en anglais, CC BY-SA 4.0. · Image : Raimond Spekking (CC BY-SA 4.0) ·
