Phase key

- adaptive current-controlled key
- All Messages key
- alphameric key
- alphanumeric key
- analog key
- answering key
- Answering Unit Lock key
- Answering Unit On key
- Ant key
- arrow keys
- assignment key
- Asterisk key
- Audio Mixing key
- authentication key
- Auto Store key
- Band key
- break key
- bridge key
- busy key
- calibration test key
- call key
- calling key
- cam key
- Cancel key
- Caps Lock key
- caption key
- Carriage return key
- check key
- chroma key
- ciphering key
- Clear key
- clearing key
- closed key
- code key
- collector key
- Confidential Mailbox key
- contactless key
- contactor key
- Contrast key
- Contrast selector key
- Control key
- Copy key
- Cut-in key
- Cut-out key
- Darker key
- Dedicated-Message key
- Delayed-Polling key
- Delayed-Transmission key
- Delete key
- dial key
- Dial Tone key
- digital keys
- Directory key
- disk key
- Display/Clock key
- diver-telephone key
- DT key
- DUB key
- electronic key
- enciphering key
- encryption key
- End key
- Energy Saver key
- Enter key
- Erase key
- Esc key
- Escape key
- Extra key
- F1 key
- F2 key
- F3 key
- Fade-in key
- Fade-out key
- feed key
- Fine key
- Flash key
- function key
- functional key
- Game/Digital Preset keys
- Greeting Rec key
- Greeting Recording key
- Greeting Select key
- Halftone key
- Halftone selector key
- Handsfree key
- hanged key
- Headset key
- Help key
- HI-LITE key
- Hold key
- Home key
- identification key
- Insert key
- integral key
- intelligent key
- interruption key
- lighted key
- line disconnection key
- Line Spacing key
- linear feedback key
- listening and speaking key
- load key
- Local Mode On key
- locking key
- Lower key
- magnetic key
- mail box key
- measure key
- menu key
- M-key
- Mode key
- monitoring key
- mono/tuner key
- Mute key
- Navi key
- new message key
- Num Lock key
- numbered key
- n-wire key
- open key
- open/close key
- operating key
- optron key
- P+/P-keys
- Page Down key
- Page Up key
- Party Line Ringing key
- Pause Break key
- Pause key
- Phase key
- plug key
- Polarity key
- power key
- previous program key
- Print Screen key
- Priority key
- private key
- programmable key
- protection key
- public key
- pulsing key
- Recall key
- RECEIVE MODE key
- receiving key
- Reception key
- Reception mode key
- Reception/Transmission key
- Reception/Transmission mode key
- redial key
- Redial/Pause key
- reed key
- Relay Broadcast key
- releasing key
- Repeat key
- Reperforator ON/OFF key
- Report key
- Reset key
- Resolution key
- Resolution selector key
- reverse key
- ring-back key
- ringing key
- running key
- Scroll key
- Scroll Lock key
- Search key
- selector key
- semiconductor key
- sending key
- session key
- SET key
- Shift key
- signaling key
- Skipping key
- slave key
- soft key
- SOUND MODE key
- sounder key
- Space key
- speaking key
- specific key
- splitting key
- Stamp key
- STANDBY key
- Start key
- Stop key
- stopless key
- Store key
- Super key
- switch key
- Switch Teletext ON/OFF key
- switching key
- Tab key
- Tabulation key
- Talk key
- talk ringing key
- talking key
- tape eject key
- telegraph key
- Telephone Registration key
- thyristor key
- Tone key
- transfer key
- transistor key
- Transmission Speed Selector key
- TTI key
- Tuner/Band key
- Turbo-dial key
- turn key
- unique key
- User Data key
- User Sw. key
- V-key
- Volume key
- Yes/No keys

- acoustooptic modulation
- adaptive modulation - A-law delta modulation
- A-law pulse-code modulation
- amplitude modulation
- amplitude and angle modulation
- amplitude-frequency modulation
- amplitude-phase modulation
- amplitude-pulse modulation
- analog modulation
- angle modulation
- anode modulation
- area-delta and zero-cross modulation
- Armstrong modulation
- asymmetric amplitude modulation
- asymmetric delta modulation
- asynchronous delta modulation
- asynchronous delta-sigma modulation
- audio frequency modulation
- audio frequency-shift modulation
- balanced modulation
- baseband modulation
- base-conductivity modulation
- base-thickness modulation
- base-width modulation
- beam modulation
- beam-current modulation
- binary-pulse-code modulation - brightness modulation
- brilliance modulation
- buzzer modulation
- carrier modulation
- carrierless amplitude-phase modulation
- carrier-noise modulation
- carrier residual modulation
- cathode modulation
- cathode pulse modulation
- cavity modulation
- CD modulation
- channel-length modulation
- charge-density modulation
- chirp modulation
- choke modulation
- chopper modulation
- chroma modulation
- chrominance modulation
- clipped-noise modulation
- coherent phase-shift keying modulation
- collector modulation
- companded delta modulation
- companded frequency modulation - compound modulation
- conductivity modulation
- constant-current modulation
- constant-envelope modulation
- continuous delta modulation - control-electrode modulation
- controlled-carrier modulation
- convection-current modulation
- conventional delta modulation
- cosine modulation
- coupling modulation
- CPSK modulation
- cross modulation
- deep modulation
- delay modulation
- delta modulation
- delta-sigma modulation
- density modulation
- difference-in-depth modulation
- differential modulation - digital delta modulation - direct modulation
- discrete adaptive delta modulation
- discrete frequency modulation
- displacement modulation
- distortionless modulation
- doping modulation
- double modulation
- double-frequency modulation
- double-integration delta modulation
- double-integration delta-sigma modulation
- double-sideband modulation
- double-sideband amplitude modulation
- downward modulation
- dual modulation - effective percentage modulation - electrical modulation
- electrooptic modulation
- environmental modulation
- exponential delta modulation
- exponential delta-sigma modulation
- external modulation
- externally companded delta modulation
- extraneous modulation
- facsimile modulation
- Faraday modulation
- Faraday-rotation modulation
- FH/DS modulation
- field modulation
- field-effect modulation
- first-order constant-factor delta modulation
- floating-carrier modulation
- fork modulation
- fork-tone modulation
- frequency modulation
- frequency-amplitude modulation
- frequency-hopped/direct sequence modulation
- frequency-hopping modulation
- frequency-shift modulation
- gate-bias modulation
- grid modulation
- grid-pulse modulation
- group modulation
- group-velocity modulation
- Hall-effect modulation
- Heising modulation
- high-index frequency modulation - hum modulation
- hybrid modulation
- hyperbolic frequency modulation
- in-cavity modulation - independent-sideband modulation
- indirect modulation
- indirect frequency modulation
- inductance-tube modulation
- instantaneously adaptive delta modulation
- instantaneously companded delta modulation
- intensity modulation
- interference modulation
- internal modulation
- intracavity modulation
- inversion modulation
- isochronous modulation
- Kerr-cell modulation
- key modulation
- laser modulation
- lateral modulation
- length modulation
- lifetime modulation
- light modulation
- light-induced barrier modulation
- linear modulation - linear pulse-code modulation - logarithmic phase modulation
- loss modulation
- low-level modulation
- luminance modulation
- magnetooptic modulation
- mapping delta modulation
- maximum percentage modulation
- modified frequency modulation - multi-level pulse-code modulation
- multiple modulation
- multiplex frequency modulation
- mutual-interference modulation - negative modulation
- negative facsimile modulation
- noise modulation
- nonpolar modulation
- on-off modulation
- outphasing modulation
- parabolic frequency modulation
- percent modulation
- percentage modulation
- permutation modulation
- phase modulation
- phase-difference modulation
- phase-velocity modulation
- piezoelectrooptic light modulation
- pitch-companded delta modulation
- plate modulation
- plate-and-screen-grid modulation
- plate-pulse modulation
- PN modulation
- polar modulation
- polarization modulation
- position modulation
- positive modulation
- positive facsimile modulation
- predictive coding delta modulation
- product modulation
- pseudonoise modulation
- pseudorandom modulation
- pulse modulation
- pulse-amplitude modulation
- pulse-code modulation
- pulse-count modulation
- pulse-delay modulation - pulse-interval modulation
- pulse-length modulation
- pulse-numbers modulation
- pulse-phase modulation - pulse-spacing modulation
- pulse-time modulation - quadratic frequency modulation
- quadrature modulation - raised-cosine modulation
- reflection modulation
- reset delta modulation
- residual modulation
- robust delta modulation
- rotor modulation
- satellite repeater modulation - screen-grid modulation
- self-modulation
- self-phase modulation
- self-pulse modulation
- series modulation
- series-coupled collector modulation
- sigma-delta modulation
- sine modulation - single sideband amplitude modulation-suppressed carrier - single-tone modulation
- smoothed-phase modulation
- sound modulation
- space modulation
- space-time modulation
- spark gap modulation
- spatial modulation
- spectral modulation
- speech-reiteration delta modulation
- spread-spectrum modulation
- spurious modulation
- square-law modulation
- square-wave modulation
- SSB modulation
- Stark modulation
- start-stop modulation
- statistical delta modulation
- stereo frequency modulation
- subcarrier modulation - suppressor-grid modulation
- swept frequency modulation - symmetrical modulation
- synchronous modulation
- tamed frequency modulation
- tangent frequency modulation
- telemetering modulation
- terrestrial repeater modulation
- time modulation
- tone modulation
- transformer-coupled collector modulation
- transit-time modulation
- transmission modulation
- trapezoidal frequency modulation - two-tone modulation
- unity modulation
- upward modulation
- variable-carrier modulation - velocity variation modulation - video modulation
- voice modulation
- V-shaped frequency modulation
- waveform tracking delta modulation
- Webster modulation
- weighted pulse-code modulation
- wide-band frequency modulation
- wobble modulation
- Z-axis modulation
- zig-zag modulation

- acoustooptic modulation
- adaptive delta modulation
- adaptive differential pulse-code modulation
- adaptive modulation
- adaptive pulse-code modulation
- ADOX modulation
- A-law delta modulation
- A-law pulse-code modulation
- amplitude and angle modulation
- amplitude modulation
- amplitude-frequency modulation
- amplitude-phase modulation
- amplitude-pulse modulation
- analog modulation
- angle modulation
- anode modulation
- area-delta and zero-cross modulation
- Armstrong modulation
- asymmetric amplitude modulation
- asymmetric delta modulation
- asynchronous delta modulation
- asynchronous delta-sigma modulation
- audio frequency modulation
- audio frequency-shift modulation
- balanced modulation
- baseband modulation
- base-conductivity modulation
- base-thickness modulation
- base-width modulation
- beam modulation
- beam-current modulation
- binary-pulse-code modulation
- biphase modulation
- block companded pulse-code modulation
- brightness modulation
- brilliance modulation
- buzzer modulation
- carrier modulation
- carrier residual modulation
- carrierless amplitude-phase modulation
- carrier-noise modulation
- cathode modulation
- cathode pulse modulation
- cavity modulation
- CD modulation
- channel-length modulation
- charge-density modulation
- chirp modulation
- choke modulation
- chopper modulation
- chroma modulation
- chrominance modulation
- clipped-noise modulation
- coherent phase-shift keying modulation
- collector modulation
- companded delta modulation
- companded frequency modulation
- compatible quadrature amplitude modulation
- composition modulation
- compound modulation
- conductivity modulation
- constant-current modulation
- constant-envelope modulation
- continuous delta modulation
- continuously variable-slope delta-modulation
- continuous-wave modulation
- control-electrode modulation
- controlled-carrier modulation
- convection-current modulation
- conventional delta modulation
- cosine modulation
- coupling modulation
- CPSK modulation
- cross modulation
- deep modulation
- delay modulation
- delta modulation
- delta-sigma modulation
- density modulation
- difference-in-depth modulation
- differential modulation
- differential pulse-code modulation
- digital delta modulation
- digital modulation
- digital phase modulation
- digitally controlled delta modulation
- direct modulation
- discrete adaptive delta modulation
- discrete frequency modulation
- displacement modulation
- distortionless modulation
- doping modulation
- double modulation
- double-frequency modulation
- double-integration delta modulation
- double-integration delta-sigma modulation
- double-sideband amplitude modulation
- double-sideband modulation
- downward modulation
- dual modulation
- dynamic adaptive multiple quadrature amplitude modulation
- echo modulation
- effective percentage modulation
- eight-to-fourteen modulation
- elastooptic modulation
- electrical modulation
- electrooptic modulation
- environmental modulation
- exponential delta modulation
- exponential delta-sigma modulation
- external modulation
- externally companded delta modulation
- extraneous modulation
- facsimile modulation
- Faraday modulation
- Faraday-rotation modulation
- FH/DS modulation
- field modulation
- field-effect modulation
- first-order constant-factor delta modulation
- floating-carrier modulation
- fork modulation
- fork-tone modulation
- frequency modulation
- frequency-amplitude modulation
- frequency-hopped/direct sequence modulation
- frequency-hopping modulation
- frequency-shift modulation
- gate-bias modulation
- grid modulation
- grid-pulse modulation
- group modulation
- group-velocity modulation
- Hall-effect modulation
- Heising modulation
- high-index frequency modulation
- high-information delta modulation
- high-level modulation
- hum modulation
- hybrid modulation
- hyperbolic frequency modulation
- in-cavity modulation
- incidental carrier phase modulation
- incidental frequency modulation
- independent-sideband modulation
- indirect frequency modulation
- indirect modulation
- inductance-tube modulation
- instantaneously adaptive delta modulation
- instantaneously companded delta modulation
- intensity modulation
- interference modulation
- internal modulation
- intracavity modulation
- inversion modulation
- isochronous modulation
- Kerr-cell modulation
- key modulation
- laser modulation
- lateral modulation
- length modulation
- lifetime modulation
- light modulation
- light-induced barrier modulation
- linear delta modulation
- linear frequency modulation
- linear modulation
- linear pulse-code modulation
- line-type modulation
- logarithmic companded pulse-code modulation
- logarithmic phase modulation
- loss modulation
- low-level modulation
- luminance modulation
- magnetooptic modulation
- mapping delta modulation
- maximum percentage modulation
- modified frequency modulation
- modified modified frequency modulation
- multi-level delta modulation
- multi-level pulse-code modulation
- multiple modulation
- multiplex frequency modulation
- mutual-interference modulation
- narrow-band frequency modulation
- N-ary pulse-code modulation
- negative facsimile modulation
- negative modulation
- noise modulation
- nonpolar modulation
- on-off modulation
- outphasing modulation
- parabolic frequency modulation
- percent modulation
- percentage modulation
- permutation modulation
- phase modulation
- phase-difference modulation
- phase-velocity modulation
- piezoelectrooptic light modulation
- pitch-companded delta modulation
- plate modulation
- plate-and-screen-grid modulation
- plate-pulse modulation
- PN modulation
- polar modulation
- polarization modulation
- position modulation
- positive facsimile modulation
- positive modulation
- predictive coding delta modulation
- product modulation
- pseudonoise modulation
- pseudorandom modulation
- pulse delta modulation
- pulse group delta modulation
- pulse modulation
- pulse-amplitude modulation
- pulse-code modulation
- pulse-count modulation
- pulse-delay binary modulation
- pulse-delay modulation
- pulse-duration modulation
- pulse-frequency modulation
- pulse-interval modulation
- pulse-length modulation
- pulse-numbers modulation
- pulse-phase modulation
- pulse-polarization binary modulation
- pulse-repetition rate modulation
- pulse-spacing modulation
- pulse-time modulation
- pulse-width modulation
- Q modulation
- quadratic frequency modulation
- quadrature modulation
- quadrature-amplitude modulation
- quantized frequency modulation
- quantized pulse modulation
- quantized pulse-position modulation
- quiescent-carrier modulation
- raised-cosine modulation
- reflection modulation
- reset delta modulation
- residual modulation
- robust delta modulation
- rotor modulation
- satellite repeater modulation
- scanning-velocity modulation
- scan-velocity modulation
- screen-grid modulation
- self-modulation
- self-phase modulation
- self-pulse modulation
- series modulation
- series-coupled collector modulation
- sigma-delta modulation
- sine modulation
- single sideband amplitude modulation
- single sideband amplitude modulation-suppressed carrier
- single sideband modulation
- single-sideband frequency modulation
- single-sided angle modulation
- single-tone modulation
- smoothed-phase modulation
- sound modulation
- space modulation
- space-time modulation
- spark gap modulation
- spatial modulation
- spectral modulation
- speech-reiteration delta modulation
- spread-spectrum modulation
- spurious modulation
- square-law modulation
- square-wave modulation
- SSB modulation
- Stark modulation
- start-stop modulation
- statistical delta modulation
- stereo frequency modulation
- subcarrier frequency modulation
- subcarrier modulation
- suppressed-carrier modulation
- suppressor-grid modulation
- swept frequency modulation
- syllabically companded delta modulation
- syllabically companded pulse-code modulation
- symmetrical modulation
- synchronous modulation
- tamed frequency modulation
- tangent frequency modulation
- telemetering modulation
- terrestrial repeater modulation
- time modulation
- tone modulation
- transformer-coupled collector modulation
- transit-time modulation
- transmission modulation
- trapezoidal frequency modulation
- trellis coded modulation
- two-bit pulse-code modulation
- two-tone modulation
- unity modulation
- upward modulation
- variable-carrier modulation
- variable-slope delta modulation
- velocity modulation
- velocity variation modulation
- vestigial-sideband amplitude modulation
- vestigial-sideband modulation
- vibration modulation
- video modulation
- voice modulation
- V-shaped frequency modulation
- waveform tracking delta modulation
- Webster modulation
- weighted pulse-code modulation
- wide-band frequency modulation
- wobble modulation
- Z-axis modulation
- zig-zag modulation

- absorption modulation
- acousto-optic modulation
- adaptive delta modulation
- amplitude modulation
- amplitude-frequency modulation
- amplitude-phase modulation
- analog voice modulation
- angle modulation
- anode modulation
- anode-pulse modulation
- anode-shield modulation
- asymmetrical amplitude modulation
- audio-frequency shift modulation
- balanced modulation
- balanced-amplitude modulation
- base modulation
- baseband modulation
- binary frequency modulation
- binary modulation
- biphase modulation
- cathode modulation
- chroma modulation
- chrominance modulation
- clipped speech modulation
- coded modulation
- coherent modulation
- collector modulation
- collectorless modulation
- combined modulation
- companded amplitude modulation
- conditioned-diphase modulation
- constant-current modulation
- continuous-wave modulation
- controlled-carrier modulation
- cross modulation
- delta modulation
- delta-sigma modulation
- density modulation
- differential modulation
- digital-amplitude modulation
- digital-carrier modulation
- digital-frequency modulation
- digital-phase modulation
- digital-phased modulation
- direct modulation
- direct-sequence modulation
- discrete-difference modulation
- double-side modulation
- double-sideband modulation
- downward modulation
- DSBSC modulation
- dual modulation
- effective-percentage modulation
- electrical modulation
- excited modulation
- F1B modulation
- F2B modulation
- fixed-reference modulation
- floating-carrier modulation
- fork modulation
- four-phase modulation
- frequency modulation
- frequency-shift modulation
- full modulation
- grid modulation
- group modulation
- H3E modulation
- hierarchical modulation
- high-level modulation
- incidental modulation
- incremental-phase modulation
- independent-sideband modulation
- indirect frequency modulation
- intensity modulation
- isochronous modulation
- J3K modulation
- key modulation
- lambda-delta modulation
- light modulation
- lincompex modulation
- linear-frequency modulation
- low-level modulation
- luminance-chrominance modulation
- mechanically-induced modulation
- multicarrier modulation
- multistep modulation
- N-ary pulse-code modulation
- negative modulation
- noise modulation
- noncoherent modulation
- n-VSB modulation
- optical-source modulation
- oversampled delta modulation
- PCM modulation
- percent modulation
- percentage modulation
- permutation modulation
- phase modulation
- phase-reversal modulation
- phase-subtracting modulation
- plate modulation
- plate-pulse modulation
- polar modulation
- polarizing modulation
- position modulation
- positive modulation
- preemphasized-speech modulation
- pulse-amplitude modulation
- pulse-code modulation
- pulse-density modulation
- pulse-duration modulation
- pulse-frequency modulation
- pulse-interval modulation
- pulse-length modulation
- pulse-numbers modulation
- pulse-phase modulation
- pulse-position modulation
- pulse-rate modulation
- pulse-spacing modulation
- pulse-time modulation
- pulse-width modulation
- quadrature-amplitude modulation
- quantization-frequency modulation
- quantization-pulse modulation
- R3A modulation
- series modulation
- single sideband modulation
- single-band modulation
- sinusoidal angular modulation
- space modulation
- spurious modulation
- start-stop modulation
- suppressed-carrier modulation
- symmetrical modulation
- synphased modulation
- time frequency-pulse modulation
- time phase-pulse modulation
- time-pulse modulation
- tone modulation
- transmission modulation
- trapezoidal modulation
- two-position phase modulation
- two-tone modulation
- unprocessed-speech modulation
- upward modulation
- USB modulation
- variable-amplitude modulation
- vestigial-sideband modulation
- voice modulation
- Z-axis modulation
- zig-zag modulation

- amplitude-frequency distribution
- angular distribution
- antenna current and voltage distribution
- aperture distribution
- arbitrary distribution
- asymmetrical luminous intensity distribution
- asymptotical distribution
- automatic call distribution
- Bayliss distribution
- beam distribution
- bell-shaped distribution
- Bernoulli distribution
- beta distribution
- bimodal distribution
- binomial distribution
- bivariate Laplace-Gauss distribution
- bivariate normal distribution
- Boltzmann distribution
- Bose-Einstein distribution
- call distribution
- Cauchy distribution
- censored distribution
- Chebyshev distribution
- chi-square distribution
- circular Bayliss distribution
- circular Taylor distribution
- conditional distribution
- conditional frequency distribution
- conditional probability distribution
- contaminated distribution
- contaminated normal distribution
- continuous distribution
- cophased distribution
- cumulative distribution
- current distribution
- degenerate distribution
- density distribution
- dipole density distribution
- discontinuous distribution
- discrete distribution
- display distribution
- distribution distribution
- Dolf-Chebyshev distribution
- electron distribution
- empiric distribution
- empirical distribution
- energy distribution
- equilibrium distribution
- Erlang distribution
- exponential distribution
- extreme value distribution
- F-distribution
- failure distribution
- Fermi-Dirac distribution
- Fisher distribution
- frequency distribution
- gamma distribution
- Gaussian distribution
- Gaussian probability distribution
- geometric distribution
- heavy-tailed distribution
- Hermite-Gaussian distribution
- hypergeometric distribution
- impurity distribution
- in-phase distribution
- inter-arrival distribution
- inverse distribution
- key distribution
- Laplace-Gauss distribution
- large-sample distribution
- level distribution
- light-tailed distribution
- limiting distribution
- linear Bayliss distribution
- linear tapered distribution
- linear Taylor distribution
- logarithmically logistic distribution
- logarithmically normal distribution
- logistic distribution
- log-logistic distribution
- log-normal distribution
- marginal distribution
- marginal frequency distribution
- marginal probability distribution
- Maxwellian distribution
- Maxwell velocity distribution
- mixed distribution
- monomodal distribution
- multimodal distribution
- multinomial distribution
- multivariate distribution
- multivariate normal distribution
- negative binomial distribution
- noise distribution
- non-central distribution
- nonequilibrium distribution
- normal distribution
- parabolic index distribution
- Pearson distribution
- phase distribution
- Poisson distribution
- polarization distribution
- polynomial distribution
- population distribution
- posterior distribution
- potential distribution
- power and ground distribution
- pre-second breakdown current distribution
- prior distribution
- probability distribution
- public key distribution
- radiation distribution
- random distribution
- range distribution
- Rayleigh distribution
- rectangular distribution
- reference distribution
- sample distribution
- sampling distribution
- scintillation photon distribution
- secure key distribution
- service time distribution
- sinusoidal distribution
- small-sample distribution
- software distribution
- source distribution
- space distribution
- spatial distribution
- spectral distribution
- spectral energy distribution
- spherical momentum distribution
- standard bivariate Laplace-Gauss distribution
- standardized bivariate Laplace-Gauss distribution
- standard bivariate normal distribution
- standardized bivariate normal distribution
- standard Laplace-Gauss distribution
- standardized Laplace-Gauss distribution
- standard normal distribution
- standard ized normal distribution
- stationary distribution
- stress distribution
- Student's distribution
- symmetric distribution
- symmetrical intensity distribution
- symmetrical luminous intensity distribution
- t-distribution
- time distribution
- time-to-failure distribution
- traffic distribution
- truncated distribution
- type III extreme value distribution
- unconditional distribution
- uniform distribution
- unimodal distribution
- univariate distribution
- univariate frequency distribution
- Weibull distribution
- wide-area network distribution
- Wishart distribution
- wrapped-up normal distribution

- acoustic relay
- active-power relay
- add-and-subtract relay
- alarm relay
- Allström relay
- all-to-all relay
- annunciation relay
- antenna relay
- antiplugging relay
- armature relay
- auxiliary relay
- balanced relay
- baseband relay
- biased relay
- bistable relay
- blocking relay
- break-in relay
- calling relay
- capacitance relay
- center-stable polar relay
- clapper relay
- clearing relay
- close-differential relay
- closing relay
- coaxial relay
- code relay
- command relay
- compelled relay
- conductance relay
- connector relay
- contact relay
- contactless relay
- continuous duty relay
- control relay
- correed relay
- current relay
- dc relay
- definite-purpose relay
- delay relay
- diaphragm relay
- differential relay
- digital radio relay
- direct-action relay
- directional relay
- directional-current relay
- directional-overcurrent relay
- directional-polarity relay
- directional-power relay
- directional-resistance relay
- directional-voltage relay
- directivity relay
- distance relay
- dry-reed relay
- earth-fault relay
- electrical relay
- electrical-mechanical relay
- electromagnetic relay
- electromechanical relay
- electronic relay
- electronic-tube relay
- electrostatic relay
- electrostrictive relay
- enclosed relay
- extraterrestrial relay
- fast-operate relay
- fast-packet frame-relay
- fast-release relay
- fault selective relay
- ferrodynamicrelay
- field application relay
- field loss relay
- flat-type relay
- flow relay
- frequency relay
- frequency-selective relay
- frequency-sensitive relay
- gas-filled relay
- gas-filled reed relay
- general-purpose relay
- ground relay
- ground protective relay
- group-selector relay
- guard relay
- heavy-duty relay
- hermetically sealed relay
- high G-relay
- high-speed relay
- homing relay
- hot-wire relay
- impedance relay
- indicating relay
- indirect-action relay
- inertia relay
- initiating relay
- instantaneous overcurrent relay
- instrument-type relay
- integrating relay
- interlock relay
- intersatellite relay
- key relay
- Kipp relay
- lag relay
- latch-in relay
- latching relay
- LED-coupled solid-state relay
- light relay
- light-activated switching relay
- line relay
- line-break relay
- locking relay
- lockout relay
- lock-up relay
- logic relay
- magnetic reed relay
- magnetostrictive relay
- manual-automatic relay
- marginal relay
- mechanical locking relay
- memory relay
- mercury relay
- mercury-contact relay
- mercury-wetted reed relay
- metering relay
- meter-type relay
- mho relay
- microwave relay
- microwave-radio relay
- motor-field failure relay
- multiposition relay
- NC relay
- net-to-net relay
- network relay
- network master relay
- network phasing relay
- neutral relay
- NO relay
- nonpolarized relay
- normally-closed relay
- normally-open relay
- notching relay
- open relay
- open-phase relay
- oscillating relay
- overcurrent relay
- overfrequency relay
- overload relay
- overpower relay
- overvoltage relay
- percentage-differential relay
- phase-balance relay
- phase-reversal relay
- phase-rotation relay
- phase-sequence relay
- phase-shift relay
- photoelectric relay
- plunger relay
- polar relay
- polarized relay
- polyphase relay
- power relay
- pressure relay
- protective relay
- pulse reed relay
- radar relay
- radio relay
- ratchet relay
- rate-of-change relay
- rate-of-change temperature relay
- rate-of-rise relay
- ratio-balance relay
- ratio-differential relay
- reactance relay
- reactive-power relay
- reclosing relay
- reed relay
- register relay
- regulating relay
- remanent relay
- reset relay
- residual relay
- resistance relay
- resonant-reed relay
- reverse relay
- reverse-current relay
- ringing relay
- rotary stepping relay
- satellite relay
- selector relay
- self-latching relay
- semiconductor relay
- sensitive relay
- separating relay
- sequence relay
- sequential relay
- side-stable relay
- signal-actuated relay
- single-phase relay
- slave relay
- slow-acting relay
- slow-action relay
- slow-cutting relay
- slow-operate relay
- slow-release relay
- solenoid relay
- solid-state relay
- space relay
- speed-sensitive relay
- spring-actuated stepping relay
- SR relay
- stepping relay
- storage relay
- supersensitive relay
- surge relay
- synchronizing relay
- tape relay
- temperature relay
- test relay
- thermal relay
- thermostat relay
- three-position relay
- three-step relay
- time relay
- time-delay relay
- timing relay
- transformer-coupled solid-state relay
- transhorizon radio relay
- trip-free relay
- tripping relay
- trunk relay
- tuned relay
- two-position relay
- two-step relay
- undercurrent relay
- underfrequency relay
- underpower relay
- undervoltage relay
- vacuum reed relay
- valve relay
- vibrating relay
- voltage relay
- zero phase-sequence relay