#electrical_device  a device that produces or is powered by electricity
  supertype:  device  an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"
  part:  terminal.contact
  subtype:  aerial__antenna__transmitting_aerial  an electrical device that sends or receives radio or television signals
     subtype:  dipole_antenna__dipole  an aerial half a wavelength long consisting of two rods connected to a transmission line at the center
     subtype:  directional_antenna__directionalantenna  an antenna that transmits or receives signals only in a narrow angle
        subtype:  array.directional_antenna  an arrangement of aerials spaced to give desired directional characteristics
        subtype:  dish_antenna__dish__dish_aerial__saucer  directional antenna consisting of a parabolic reflector for microwave or radio frequency radiation
           subtype:  scanner  a radar dish that rotates or oscillates in order to scan a broad area
        subtype:  yagi__Yagi_aerial  a sharply directional antenna
     subtype:  omnidirectional_antenna__omnidirectionalantenna__nondirectional_antenna  an antenna that sends or receives signals equally in all directions
        subtype:  radio_antenna__radioantenna__radio_aerial__radioaerial  omnidirectional antenna comprising the part of a radio receiver by means of which radio signals are received
        subtype:  television_antenna__tv-antenna  an omnidirectional antenna tuned to the broadcast frequencies assigned to television
           subtype:  rabbit_ears  an indoor tv antenna; 2 extendible rods forming a V
  subtype:  attenuator  an electrical device for attenuating the strength of an electrical signal
  subtype:  electric_battery__battery  a device that produces electricity; may have several primary or secondary cells arranged in parallel or series
     subtype:  A_battery  battery used to heat the filaments of a vacuum tube
     subtype:  B_battery  battery for supplying a constant positive voltage to the plate of a vacuum tube
     subtype:  C_battery  battery used to maintain the grid potential in a vacuum tube
     subtype:  voltaic_battery__galvanic_battery  battery consisting of a number of voltaic cells arranged in series or parallel
        subtype:  dry_battery__drybattery  a voltaic battery consisting of two or more dry cells
           subtype:  flashlight_battery  a small dry battery containing dry cells; used to power flashlights
        subtype:  storage_battery__storagebattery__accumulator  a voltaic battery that stores electric charge
           subtype:  lead-acid_battery__lead-acid_accumulator  a battery with lead electrodes with dilute sulphuric acid as the electrolyte; each cell generates about 2 volts
              subtype:  car_battery__carbattery__automobile_battery  a lead-acid storage battery in a motor vehicle; usually a 12-volt battery of six cells; the heart of the car's electrical system
           subtype:  nicad__nickelcadmiumaccumulator  a rechargeable battery with a nickel cathode and a cadmium anode; often used in emergency systems because of its low discharge rate when not in use
           subtype:  nickel-iron_battery__nickel-iron_accumulator  a storage battery having a nickel oxide cathode and an iron anode with an electrolyte of potassium hydroxide; each cell gives about 1.2 volts
     subtype:  voltaic_pile__voltaicpile__galvanic_pile  battery consisting of voltaic cells arranged in series; the earliest electric battery devised by Volta
  subtype:  bimetallic_strip  a strip consisting of two metals that bends with a rise in temperature
  subtype:  brush.electrical_device  conducts current between rotating and stationary parts of a generator or motor
  subtype:  capacitor__capacitance__condenser__electrical_condenser  an electrical device characterized by its capacity to store an electric charge
     subtype:  bypass_condenser__bypass_capacitor  a capacitor that provides low impedance over certain (high) frequencies
     subtype:  electrolytic_capacitor__electrolytic__electrolytic_condenser  a fixed capacitor consisting of two electrodes separated by an electrolyte
     subtype:  Leiden_jar__Leyden_jar  an electrostatic capacitor of historical interest
     subtype:  trimming_capacitor__trimmer  capacitor having variable capacitance; used for making fine adjustments
  subtype:  electric_cell__cell  a device that delivers an electric current as the result of a chemical reaction
     subtype:  electrolytic_cell  a cell containing an electrolyte in which an applied voltage causes a reaction to occur that would not occur otherwise (such as the breakdown of water into hydrogen and oxygen)
     subtype:  fuel_cell  cell that produces electricity by oxidation of fuel (hydrogen and oxygen or zinc and air); for use in electric cars
     subtype:  solar_cell__solarcell__photovoltaic_cell  a cell that converts solar energy into electrical energy
     subtype:  storage_cell__storagecell__secondary_cell__secondarycell  a cell that can be recharged
     subtype:  voltaic_cell__voltaiccell__galvaniccell__primary_cell__primarycell  an electric cell that generates an electromotive force by an irreversible conversion of chemical to electrical energy; cannot be recharged
        subtype:  Leclanche_cell  voltaic cell that produces approximately 1.5 volts
           subtype:  dry_cell__drycell  a small Leclanche cell containing no free liquid; the electrolyte is a paste and the negative zinc pole forms the container of the cell; used in flashlights, portable radios, etc.
        subtype:  mercury_cell__mercurycell  a primary cell consisting of a zinc anode and a cathode of mercury oxide and an electrolyte of potassium hydroxide
        subtype:  standard_cell  a primary cell used as a standard of electro-motive force
           subtype:  Clark_cell__Clark_standard_cell  a form of voltaic cell once used as a standard for electromotive force
           subtype:  Weston_cell__cadmium_cell__cadmiumcell  a standard voltaic cell (trademark Weston)
        subtype:  wet_cell__wetcell  a primary voltaic cell having a liquid electrolyte
  subtype:  electrical_circuit__circuit__electric_circuit  an electrical device that provides a path for electrical current to flow
     subtype:  bridge_circuit__bridge  a circuit consisting of two branches (4 arms arranged in a diamond configuration) across which a meter is connected
        subtype:  Wheatstone_bridge  a bridge used to measure resistances
     subtype:  bridged-T  a circuit consisting of a T-network with an additional shunt bridging the two series circuits
     subtype:  closed_circuit__loop  a complete electrical circuit around which current flows or a signal circulates
        subtype:  parallel_circuit__shunt_circuit__shuntcircuit  a closed circuit in which the current divides into two or more paths before recombining to complete the circuit
     subtype:  computer_circuit  (computer science) a circuit that is part of a computer
        subtype:  logic_gate__logicgate__gate  a computer circuit with several inputs but only one output that can be activated by particular combinations of inputs
           subtype:  AND_circuit__AND_gate  a circuit in a computer that fires only when all of its inputs fire
           subtype:  NAND_circuit__NAND_gate  a logic gate that produces an output that is the inverse of the output of an AND gate
           subtype:  OR_circuit__OR_gate__orgate  a gate circuit in a computer that fires when any of its inputs fire
           subtype:  X-OR_circuit__XOR_circuit__XOR_gate  gate for exclusive OR; a circuit in a computer that fires only if only one of its inputs fire
        subtype:  integrated_circuit__microcircuit  a microelectronic computer circuit incorporated into a chip of semiconductor; a whole system rather than a single component
           subtype:  silicon_chip__siliconchip__chip__microchip__micro_chip__microchip  electronic equipment consisting of a small crystal of a silicon semiconductor fabricated to carry out a number of electronic functions in an integrated circuit
              subtype:  biochip  a microchip that uses tiny strands of DNA to latch onto and quickly recognize thousands of genes at a time; intended for use in a biological environment
              subtype:  gene_chip__DNA_chip  a microchip that holds DNA probes that form half of the DNA double helix and can recognize DNA from samples being tested
              subtype:  memory_chip  a RAM microchip that can be plugged into a computer to provide additional memory
                 subtype:  read-only_memory_chip  a memory chip providing read-only memory
              subtype:  microprocessor  integrated circuit semiconductor chip that performs the bulk of the processing and controls the parts of a system; "a microprocessor functions as the central processing unit of a microcomputer"; "a disk drive contains a microprocessor to handle the internal functions of the drive"
        subtype:  interface.computer_circuit__port  (computer science) computer circuit consisting of the hardware and associated circuitry that links one device with another (especially a computer and a hard disk drive or other peripherals)
           subtype:  parallel_interface__parallel_port  an interface between a computer and a printer where the computer sends multiple bits of information to the printer simultaneously
           subtype:  serial_port  an interface (commonly used for modems and mice and some printers) that transmits data a bit at a time
           subtype:  small_computer_system_interface__SCSI  interface consisting of a standard port between a computer and its peripherals that is used in some computers
        subtype:  module.computer_circuit  computer circuit consisting of an assembly of electronic components (as of computer hardware)
        subtype:  printed_circuit__printedcircuit  computer circuit consisting of an electronic sub-assembly; copper conductors are laminated on an insulating board or card and circuit components are inserted into holes and dip soldered
           subtype:  circuit_board__circuitboard__circuit_card__circuitcard__board__card  a printed circuit that can be inserted into expansion slots in a computer to increase the computer's capabilities
              subtype:  CPU_board__mother_board  the main circuit board for a computer
              subtype:  PC_board  a removable circuit board for a personal computer; fits into a slot in the mother board
     subtype:  delay_line__delayline  a circuit designed to introduce a calculated delay into the transmission of a signal
        subtype:  acoustic_delay_line__sonic_delay_line__sonicdelayline  a delay line based on the time of propagation of sound waves
        subtype:  electromagnetic_delay_line__electromagneticdelayline  a delay line based on the time of propagation of electromagnetic waves
     subtype:  feedback_circuit__feedback_loop  a circuit that feeds back some of the output to the input of a system
        subtype:  control_circuit__controlcircuit__negative_feedback_circuit  a feedback circuit that subtracts from the input
     subtype:  flip-flop.electrical_circuit__flipflop  an electronic circuit that can assume either of two stable states
     subtype:  limiter__clipper  (electronics) a circuit whose output is limited which serves to limits the amplitude of a waveform or clip off the peaks
     subtype:  data_link__link  an interconnecting circuit between two or more locations for the purpose of transmitting and receiving data
     subtype:  open_circuit  an incomplete electrical circuit in which no current flows
     subtype:  pulse_timing_circuit  a circuit that times pulses
     subtype:  resonant_circuit__resonator  an electrical circuit that combines capacitance and inductance in such a way that a periodic electric oscillation will reach maximum amplitude
     subtype:  series_circuit  a circuit having its parts connected serially
     subtype:  squelch_circuit__squelchcircuit__squelch__squelcher  an electric circuit that cuts off a receiver when the signal becomes weaker than the noise
     subtype:  tank_circuit  an oscillatory circuit
     subtype:  T-network  a circuit formed by two equal series circuits with a shunt between them
     subtype:  wiring.electrical_circuit  a circuit of wires for the distribution of electricity
        subtype:  light_circuit__lightcircuit__lighting_circuit  wiring that provides power to electric lights
  subtype:  control_panel__controlpanel__instrument_panel__control_board__controlboard__board__panel  electrical device consisting of an insulated panel containing switches and dials and meters for controlling other electrical devices; "he checked the instrument panel"; "suddenly the board lit up like a Christmas tree"
     subtype:  dashboard  instrument panel on an automobile or airplane containing dials and controls
  subtype:  electrical_distributor__distributor__distributer  electrical device that distributes voltage to the spark plugs of a gasoline engine in the order of the firing sequence
  subtype:  electrograph  electrical device used for etching by electrolytic means
  subtype:  electrostatic_generator__electrostaticgenerator__electrostatic_machine__electrostaticmachine__Wimshurst_machine__Van_de_Graaff_generator  electrical device that produces a high voltage by building up a charge of static electricity
     subtype:  electrophorus__electrophoru  a simple electrostatic generator that generates repeated charges of static electricity
  subtype:  filter.electrical_device  n electrical device that alters the frequency spectrum of signals passing through it
  subtype:  flasher  an electrical device that automatically turns a lamp on and off (as for an advertising display)
  subtype:  electrical_fuse__fuse  electrical device that can interrupt the flow of electrical current when it is overloaded
     subtype:  cartridge_fuse__cartridgefuse  a fuse cased in a tube
     subtype:  circuit_breaker__circuitbreaker__breaker  a device that trips like a switch and opens the circuit when overloaded
     subtype:  plug_fuse  a fuse with a thread that screws into a socket
  subtype:  inductor__inductance  an electrical device that introduces inductance into a circuit
  subtype:  jack.electrical_device  an electrical device consisting of a connector socket designed for the insertion of a plug
     subtype:  telephone_jack__telephonejack__phone_jack__phonejack  a jack for plugging in a telephone
  subtype:  load.electrical_device  electrical device to which electrical power is delivered
  subtype:  male_plug__plug  an electrical device with two or three pins that is inserted in a socket to make an electrical connection
     subtype:  telephone_plug__telephoneplug__phone_plug__phoneplug  a plug for connecting a telephone
  subtype:  Cottrell_precipitator__precipitator  removes dust particles from gases by electrostatic precipitation
  subtype:  reactor  an electrical device used to introduce reactance into a circuit
     subtype:  coil  reactor consisting of a spiral of insulated wire that introduces inductance into a circuit
        subtype:  armature  coil in which voltage is induced by motion through a magnetic field
           subtype:  rotor_coil__rotorcoil__rotor  the rotating armature of a motor or generator
        subtype:  astatic_coils__astaticcoil  an arrangement of coils used in sensitive electrical instruments; the coils are arranged to give zero resultant external magnetic field when a current passes through them and to have zero electromotive force induced in them by an external magnetic field
        subtype:  choke_coil__chokecoil__choke__choking_coil__chokingcoil  a coil of low resistance and high inductance used in electrical circuits to pass direct current and attenuate alternating current
        subtype:  field_coil__fieldcoil__field_winding__fieldwinding  the electric coil around a field magnet that produces the magneto motive force to set up the flux in an electric machine
        subtype:  induction_coil__inductioncoil  a coil for producing a high voltage from a low-voltage source
           subtype:  ignition_coil  an induction coil that converts current from a battery into the high-voltage current required by spark plugs
           subtype:  spark_coil__sparkcoil  an induction coil used to create sparks
        subtype:  primary_coil__primarycoil__primary_winding__primarywinding__primary  coil forming the part of an electrical circuit such that changing current in it induces a current in a neighboring circuit; "current through the primary coil induces current in the secondary coil"
        subtype:  read/write_head__head  (computer science) a tiny electromagnetic coil and metal pole used to write and read magnetic patterns on a disk
        subtype:  secondary_coil__secondarycoil__secondary_winding__secondarywinding__secondary  coil such that current is induced in it by passing a current through the primary coil
        subtype:  solenoid  a coil of wire around an iron core; becomes a magnet when current passes through the coil
        subtype:  tickler_coil__ticklercoil  a small coil in series with the anode of a vacuum tube and coupled to the grid to provide feedback
  subtype:  rectifier  electrical device that transforms alternating into direct current
     subtype:  demodulator  rectifier that extracts modulation from a radio carrier wave
     subtype:  full-wave_rectifier  rectifier that converts the negative half wave of an alternating current into a positive half wave
  subtype:  electrical_relay__relay  electrical device such that current flowing through it in one circuit can switch on and off a current in a second circuit
     subtype:  frame_relay
  subtype:  resistor__resistance  an electrical device that resists the flow of electrical current
     subtype:  ballast_resistor__ballastresistor__barretter  a resistor inserted into a circuit to compensate for changes (as those arising from temperature fluctuations)
     subtype:  potential_divider__potentialdivider__voltage_divider__voltagedivider  resistors connected in series across a voltage source; used to obtain a desired fraction of the voltage
        subtype:  potentiometer.potential_divider__pot  a resistor with three terminals, the third being an adjustable center terminal; used to adjust voltages in radios and TV sets
     subtype:  rheostat__variable_resistor  resistor for regulating current
        subtype:  dimmer  a rheostat that varies the current through an electric light in order to control the level of illumination
  subtype:  security_system__security_measures__security  an electrical device that sets off an alarm when someone tries to break in
  subtype:  solar_array__solararray__solar_battery__solarbattery__solar_panel__solarpanel  electrical device consisting of a large array of connected solar cells
  subtype:  spark_arrester__sparkarrester  electrical device to reduce sparking when electrical contacts are opened or closed
  subtype:  spark_plug__sparkplug__sparking_plug__plug  electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark
  subtype:  suppressor__suppresser  an electrical device for suppressing unwanted currents
     subtype:  surge_suppressor__surgesuppressor__surge_protector__surgeprotector__spike_suppressor__spikesuppressor__spike_arrester__spikearrester__lightning_arrester__lightningarrester  electrical device inserted in a power line to protect equipment from sudden fluctuations in current
  subtype:  transducer  an electrical device that converts one form of energy into another
     subtype:  electro-acoustic_transducer  a transducer that converts electrical to acoustic energy or vice versa
        subtype:  cartridge.electro-acoustic_transducer__pickup  an electro-acoustic transducer that is the part of the arm of a record player that holds the needle and that is removable
           subtype:  crystal_pickup__crystalpickup  a cartridge in which an output voltage is produced by the vibration of a piezoelectric crystal
        subtype:  earphone__earpiece__headphone__phone  electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear; "it was not the typing but the earphones that she disliked"
           subtype:  telephone_receiver__telephonereceiver__receiver  earphone that converts electrical signals into sounds
              subtype:  headset  receiver consisting of a pair of headphones
        subtype:  loudspeaker_system__loudspeakersystem__loudspeaker__speaker__speaker_unit__speakerunit__speaker_system__speakersystem  electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance
           subtype:  bullhorn__loud-hailer  a portable loudspeaker with built-in microphone and amplifier
           subtype:  squawk_box__squawker__intercom_speaker  the loudspeaker on an inter-com or public address system
           subtype:  tannoy  (British) a loudspeaker
           subtype:  tweeter  a loudspeaker that reproduces higher audio frequency sounds; "the sound system had both tweeters and woofers"
           subtype:  woofer  a loudspeaker that reproduces lower audio frequency sounds
        subtype:  microphone__mike  device for converting sound waves into electrical energy
           subtype:  bug.microphone  a small hidden microphone; for listening secretly
           subtype:  condenser_microphone__condensermicrophone__capacitor_microphone__capacitormicrophone  microphone consisting of a capacitor with one plate fixed and the other forming the diaphragm moved by sound waves
           subtype:  crystal_microphone__crystalmicrophone  a microphone in which sound waves vibrate a piezoelectric crystal that generates a varying voltage
     subtype:  mosaic.transducer  transducer formed by the light-sensitive surface on a television camera tube
     subtype:  photoelectric_cell__photoelectriccell__photoconductive_cell__photoconductivecell__photocell__electric_eye__magic_eye__magiceye  a transducer used to detect and measure light and other radiations
        subtype:  selenium_cell  a photoelectric cell that uses a strip of selenium
  subtype:  transformer  an electrical device by which alternating current of one voltage is changed to another voltage
     subtype:  coil.transformer  a transformer that supplies high voltage to spark plugs in a gasoline engine
     subtype:  step-down_transformer  a transformer that reduces voltage
     subtype:  step-up_transformer  a transformer that increases voltage
        subtype:  cascade_transformer  a number of transformers in series; provides a high-voltage source
     subtype:  Tesla_coil  a step-up transformer with an air core; used to produce high voltages at high frequencies
     subtype:  voltage_regulator__voltageregulator  a transformer whose voltage ratio of transformation can be adjusted
  subtype:  transponder  electrical device designed to receive a specific signal and automatically transmit a specific reply
  subtype:  zapper  an electrical device that can injure or kill by means of electric currents; "a bug zapper"

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