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Schematic diagram of an opto-isolator showing source of light (LED) on the left, dielectric barrier in the center, and sensor (phototransistor) on the right [note 1]. An opto-isolator (also called an optocoupler, photocoupler, or optical isolator) is an electronic component that transfers electrical signals between two isolated circuits by using light. [1]
English: A diagram of a simple circuit using an optocoupler. When the switch S' 1 is closed, the diode emits light and the transistor conducts. v' out thus goes low. This circuit therefore acts much like a logicalNOT gate.
Opto-isolator: often changed to "U" for IC P: Plug (most-movable connector of a connector pair), plug connector (connector may have "male" pin contacts and/or "female" socket contacts) PD: Photodiode: Q: Transistor (all types) R: Resistor: RN: Resistor network: sometimes simplified to "R" for resistor, or "N" for network RT: Thermistor
Optocoupler schematic diagram. Own work. File usage. No pages on the English Wikipedia use this file (pages on other projects are not listed). Global file usage.
Wire crossover symbols for circuit diagrams. The CAD symbol for insulated crossing wires is the same as the older, non-CAD symbol for non-insulated crossing wires. To avoid confusion, the wire "jump" (semi-circle) symbol for insulated wires in non-CAD schematics is recommended (as opposed to using the CAD-style symbol for no connection), so as to avoid confusion with the original, older style ...
Circuit macros is a set of macros for drawing high-quality line diagrams to include in TeX, LaTeX, web, or similar documents, with support for SVG and other formats. It uses the M4 macro processor and a Pic interpreter and can produce TikZ code.
The IC, loaded with the very low impedance of the LED, operates as a current source; undesirable voltage ripple passes from the output rail to the cathode almost unimpeded. [36] This "fast lane" dominates at mid-band frequencies (ca. 10 kHz–1 MHz), [ 37 ] and is usually broken by decoupling the LED from the output capacitor with a zener diode ...
Unlike electronic integration where silicon is the dominant material, system photonic integrated circuits have been fabricated from a variety of material systems, including electro-optic crystals such as lithium niobate, silica on silicon, silicon on insulator, various polymers, and semiconductor materials which are used to make semiconductor lasers such as GaAs and InP.