Basic Electrical and Electronic Symbols

Basic symbols of  Digital Electronic

https://www.electrical-symbols.com/electronic-electrical-symbols/basic-electrical-electronic-symbols.htm#symbols_logic_gates

Símbolos en Alarmas

Los sistemas de alarma son dispositivos electrónicos de seguridad, cuya función principal es disuadir a cometer actos indeseados y comunicar de los mismos o de otras situaciones anómalas a través de diversos tipos de señales.

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-alarmas.htm

Basic Electronic Symbols of active components

Basic Electrical and Electronic Symbols 

Basic symbols of active components

https://www.electrical-symbols.com/electronic-electrical-symbols/basic-electrical-electronic-symbols.htm#symbols_active_components

Símbolos de Termoacopladores / Detectores de Temperatura

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-sensores-electronicos.htm#simbolos_detectores_termoacopladores_termopares

Basic symbols of passive electronic components

https://www.electrical-symbols.com/electronic-electrical-symbols/basic-electrical-electronic-symbols.htm#symbols_passive_components

Símbolos de Optoacopladores / Detectores Fotoeléctricos

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-sensores-electronicos.htm#simbolos_detectores_optoacopladores_fotoelectricos

Basic Electrical and Electronic Symbols

Summary of main Basic Electrical Symbols and Electronic Symbols

https://www.electrical-symbols.com/electronic-electrical-symbols/basic-electrical-electronic-symbols.htm

Símbolos de Sensores por Proximidad

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-sensores-electronicos.htm#simbolos_sensores_proximidad

Símbolos de Contactos por Efectos o Dependencias

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-sensores-electronicos.htm#simbolos_contactos_efectos

Electrical Symbols & Electronic Symbols in PDF

The largest collection of symbols in the network in PDF format. For consultation and interpretation of components, devices and electrical and electronic circuit

https://www.electrical-symbols.com/electronic-electrical-symbols/electrical-electronic-symbols-PDF.htm

Símbolos de Transductores, Sensores, Detectores...

Los transductores, sensores y detectores eléctricos y electrónicos son elementos que se activan por la energía entregada por un sistema y que a su vez entregan otro tipo de energía distinta a otro sistema. La energía transformada puede ser de origen físico, químico o biológico.

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-sensores-electronicos.htm

Other Electrical & Electronic Symbols - Miscellaneous

https://www.electrical-symbols.com/electric-electronic-symbols/miscellaneous-electronic-electrical-symbols.htm

Símbolos de Resistencias Especiales

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-resistencias-electricas.htm#simbolos_resistencias_especiales

Symbols of Sockets of Vacuum Tubes

https://www.electrical-symbols.com/electric-electronic-symbols/vacuum-tubes-symbols.htm#symbols_sockets_vacuum_tubes

Símbolos de Resistencias Variables y Ajustables

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-resistencias-electricas.htm#simbolos_resistencias_variables_ajustables

Pinout Vacuum Tubes

https://www.electrical-symbols.com/electric-electronic-symbols/vacuum-tubes-symbols.htm#pinout_contact_vacuum_tubes

Símbolos de Resistencias Eléctricas / Resistores

Las resistencias eléctricas o resistores son componentes pasivos fabricados específicamente para ofrecer un valor determinado de resistencia al paso de la corriente eléctrica. Su unidad de medida es el ohmio y se representa con la letra griega omega.

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-resistencias-electricas.htm

Símbolos de Contactos del Relé

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-reles.htm#simbolos_contactos_reles

Basic Elements Symbols of Vacuum Tubes

https://www.electrical-symbols.com/electric-electronic-symbols/vacuum-tubes-symbols.htm#basic_elements_symbols

Símbolos de Electroimanes / Mandos Electromagnéticos

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-reles.htm#simbolos_mandos_electromagneticos

Símbolos de Relés de Medida

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-reles.htm#simbolos_reles_medida

Vacuum Tube Symbols

Electronic tube in which it is applied a high enough pressure so that its electrical properties are not substantially modified by the ionization of residual gas or vapor. Also known as valveor tube.

https://www.electrical-symbols.com/electric-electronic-symbols/vacuum-tubes-symbols.htm

Symbols of Transmission Lines (Electrical Distribution)

The transmission lines and the electrical distribution systems form the set of structures and devices (transformers, cables, poles ...) responsible of transporting electricity from the source of generation to the final consumption centers.

https://www.electrical-symbols.com/electric-electronic-symbols/lines-electrical-distribution-symbols.htm

Símbolos de Relés

Los relés son dispositivos de conmutación activados por señales. La mayoría de las veces, se utiliza una pequeña tensión o corriente para conmutar otras tensiones o corrientes mayores.

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-reles.htm

Symbols of Transistors MOSFET and IGFET

Transistors of field effect (MOSFET and IGFET) are transistors constituted by a filament generally made of semiconductor silicon, called channel, and an associate diode called door. 
These symbols can be represented inside a circle.

https://www.electrical-symbols.com/electric-electronic-symbols/transistor-mosfet-symbols.htm

Símbolos de Pulsos e Impulsos

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-ondas-electricas.htm#simbolos_pulsos_impulsos

Waveguides Symbols

A waveguide is a physical structure through which energy is transmitted in the form of electromagnetic waves. The modes of propagation depend on the wavelength, the polarization and the dimensions of the guide.

https://www.electrical-symbols.com/electric-electronic-symbols/waveguides-symbols.htm

Symbols in Fire Alarm Systems

A fire alarm system is a security installation that detects and activates the alert by means of sensors in case of locating smoke or fire in the spaces it is protecting.

https://www.electrical-symbols.com/electric-electronic-symbols/fire-alarm-systems-symbols.htm

Symbols in Security Systems

The security systems are devices designed to detect and warn of any situation that is considered abnormal for the user, such as the intrusion of people, fires, presence of toxic elements ...

https://www.electrical-symbols.com/electric-electronic-symbols/security-systems-symbols.htm

Transistor Symbols

The Transistor is a device semiconductor provided with three terminals called base, issuer and collector. It is used to work in electronic circuits as rectifier, amplifier, switch...
These symbols can be represented inside a circle.

https://www.electrical-symbols.com/electric-electronic-symbols/transistor-symbols.htm

Símbolos de Ondas Electromagnéticas

Las ondas, pulsos e impulsos son perturbaciones propagadas donde la intensidad en cualquier punto de un medio es función del tiempo y la intensidad en un instante dado es función de la posición del punto. Las ondas pueden ser eléctricas, electromagnéticas, acústicas o mecánicas.

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-ondas-electricas.htm

Symbols of Thyristors, Triacs and Diacs

The Thyristors are semiconductors of four caps that are activated by application of an impulse and are deactivated on not having supplied the current of work. They handle big powers. They are recognized by the English initials SCR.
The triac and diac are bidirectional semiconductor devices.

https://www.electrical-symbols.com/electric-electronic-symbols/thyristor-triac-diac-symbols.htm

Símbolos de Núcleos Férricos y Ferritas

Los núcleos férricos y ferritas son piezas cerámicas con una estructura critalina del hierro con propiedades magnéticas. Se emplean en filtros para cables, núcleos de inductancias, transformadores eléctricos... para anular o mitigar las corrientes de Foucault.

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-nucleos-ferricos.htm

Morse Code Symbology

https://www.electrical-symbols.com/electric-electronic-symbols/telegraphy-symbols.htm#morse_code_symbology

Símbolos de Motores Trifásicos

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-motores-electricos.htm#simbolos_motores_trifasicos

Telegraphy Symbols

The telegraph is an ancient system of transmission of messages over long distances, using a Morse code. Originally the medium used for the transmission of electrical impulses were cables and later through radio signals.

https://www.electrical-symbols.com/electric-electronic-symbols/telegraphy-symbols.htm

Símbolos de Sincromotores

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-motores-electricos.htm#simbolos_sincromotores

Symbols of Single-Line Switches / Unifilar

Representation single-line of switches, push-buttons and other devices responsible for establishing, sustaining and interrupt the electrical current in low power circuits.

https://www.electrical-symbols.com/electric-electronic-symbols/switches-unifilar-symbols.htm

Símbolos de Motores Eléctricos

Los motores eléctricos son dispositivos electromecánicos que transforman la energía eléctrica en energía mecánica a través de interacciones electromagnéticas. Hay otros motores (generadores) que producen electricidad aprovechando la energía mecánica, como son los alternadores y dinamos.

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-motores-electricos.htm

Símbolos de Cables y Conductores Eléctricos

Los cables y conductores eléctricos son materiales que conducen la electricidad con facilidad, como ciertos metales. También son conductores eléctricos los electrolitos y gases ionizados. La finalidad es la distribución de la corriente eléctrica por el circuito.

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-cables-conductores-electricos.htm

Symbols of Switches of Step in Two-Position

https://www.electrical-symbols.com/electric-electronic-symbols/switch-symbols.htm#symbols_switches_step_two-position

Symbols of Operation Switches with Advanced or Delayed

https://www.electrical-symbols.com/electric-electronic-symbols/switch-symbols.htm#operation_switch_symbols_advanced_delayed

Símbolos de Líneas de Transmisión y Distribución

Las líneas de transmisión y las redes de distribución eléctrica forman el conjunto de dispositivos y estructuras (transformadores, cables, postes...) encargadas de transportar la energía eléctrica desde el origen de generación hasta los centros de consumo final.

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-lineas-distribucion-electrica.htm

Symbols of Contacts with Automatic Return and Position Maintained

https://www.electrical-symbols.com/electric-electronic-symbols/switch-symbols.htm#symbols_contacts_automatic_return

Símbolos de Contactos Eléctricos Unifilares

Representación unifilar de interruptores, conmutadores, pulsadores y otros dispositivos encargados de establecer, soportar e interrumpir la corriente eléctrica en circuitos de baja potencia.

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-contactos-unifilar.htm

Symbols of Position Switches

https://www.electrical-symbols.com/electric-electronic-symbols/switch-symbols.htm#symbols_position_switches

Símbolos de Contactos de Paso de Dos Posiciones

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-interruptores-electricos.htm#simbolos_contactos_paso_dos_posiciones

Disconnectors / Unipolar Switch Symbols

https://www.electrical-symbols.com/electric-electronic-symbols/switch-symbols.htm#symbols_disconnectors_switches_unipolar

Símbolos de Contactos con Funcionamiento Adelantado o Retrasado

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-interruptores-electricos.htm#simbolos_contactos_adelantados_retrasados

Symbols of Switches of Two and Three Positions

https://www.electrical-symbols.com/electric-electronic-symbols/switch-symbols.htm#symbols_switches_two_three_positions