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

Símbolos de Contactos con Retorno Automático y Posición Mantenida

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

Push-buttons / Push Switch Symbols

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

Símbolos de Contactos de Posición

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

Circuit Switch Symbols

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

Símbolos de Seccionadores / Interruptores Unipolares

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

Symbol of Switches

The switches are electrical, electronic or mechanical designed to interrupt or divert the flow of electric current or other signals in an electrical circuit devices.

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

Símbolos de Contactos de Dos y Tres Posiciones

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

Thermocouple Symbols / Temperature Detectors

https://www.electrical-symbols.com/electric-electronic-symbols/sensors-transducers-symbols.htm#symbols_thermocouple_temperature_detectors

Símbolos de Pulsadores

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

Symbols Optocouplers / Photoelectric Detectors / Optoisolators

https://www.electrical-symbols.com/electric-electronic-symbols/sensors-transducers-symbols.htm#symbols_optocouplers_photoelectric_detectors

Símbolos de Conmutadores

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

Proximity Sensors Symbols

https://www.electrical-symbols.com/electric-electronic-symbols/sensors-transducers-symbols.htm#proximity_sensors_symbols

Símbolos de Interruptores

Los Interruptores son dispositivos encargados de establecer, soportar e interrumpir la corriente eléctrica en circuitos eléctricos y electrónicos.

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

Effects Switches Symbols or Dependencies

https://www.electrical-symbols.com/electric-electronic-symbols/sensors-transducers-symbols.htm#effects_switches_symbols

Símbolos de Relojes Eléctricos

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-instrumentacion-electrica.htm#simbolos_relojes_electricos

Symbols of Electronic Sensors, Transducers, Detectors...

The transducers, sensors and electrical and electronic detectors are elements that are activated by the energy delivered by a system and that in turn deliver another type of energy to another different system. The transformed energy may be physical, chemical or biological origin.

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

Símbolos Grabadores Eléctricos - Registradores

https://www.simbologia-electronica.com/simbolos-electricos-electronicos/simbolos-instrumentacion-electrica.htm#simbolos_registradores_grabadores