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...ting or maintenance. Each motor controller contains a contactor or a solid-state motor controller, overload relays to protect the motor, fuses or a circuit ...switches, extra control terminal blocks, various types of thermal or solid-state overload protection relays, or various classes of power fuses or types of c ...

...Electrical Practice, Vol 2).jpg|thumb|Liquid rheostats used as motor start switches, circa 1900]] ...Volume 1, [Power sources & conversion : resistors, capacitors, inductors, switches, encoders, relays, transistors]|date=2012|publisher=O'Reilly/Make|isbn=978- ...

...moving; one stationary) designed to control electricity. Electromechanical switches, relays, and contactors “turn power on” when the moving electrode makes con ...her = | date = | url = http://www.te.com/usa-en/products/relays-contactors-switches/relays/intersection/application-notes.html | accessdate = January 21, 2018} ...

[[File:switches-electrical.agr.jpg|thumb|upright=1.4|Electrical switches. Top, left to right: circuit breaker, [[mercury switch]], wafer switch, [[D ...y be wired into one circuit to allow convenient control of light fixtures. Switches in high-powered circuits must have special construction to prevent destruct ...

...JFET, SCR, TRIAC, zero-crossing TRIAC, open collector IC, CMOS IC, [[solid state relay]] (SSR) ...tism or magnetic flux, and have the ability to retain a previous resistive state, hence the name of Memory plus Resistor. ...

...switching thresholds in only one polarity of the magnetic field. Omnipolar switches have two sets of switching thresholds, for both positive and negative polar ...nd require a more significant field strength to change states than bipolar switches require. The naming distinction between "bipolar" and "latch" may be a litt ...

...ing other operating principles have also been invented, such as in [[solid-state relay]]s which use [[semiconductor]] properties for control without relying ...placed when worn out, or changed between normally open and normally closed state, to allow for changes in the controlled circuit.<ref>{{cite book |first=Jos ...

Before solid state AC voltage regulation was available or cost effective, motor generator sets ...ultiple unit|EMU]] stock in use. These have since been replaced with solid state converters on new rolling stock.<ref>{{cite web| url=https://aboutgenerator ...

...s added to [[coagulate]] the particles, or change the particles to a solid state. Most of the [[supernatant]], the liquid lying above a layer of the precipi * [[Switch|DPDT Switch]]: Two switches that direct the flow of current through the circuit. ...

{{short description|Type of solid state switch}} ...0|pp=12}} There are two designs, differing in what triggers the conducting state. In a three-lead thyristor, a small current on its gate lead controls the l ...

...], which are mostly accessed via a touchscreen interface, have no physical switches and provide artificial audio and [[haptic technology|haptic feedback]] inst ...provide feedback to the user (and to the [[central processor]]) about what state the keyboard is in. [[Plug-and-play]] technology means that its "out of the ...

An onboard microcontroller rapidly switches on and off power [[MOSFET]]s at high frequency like ~50&nbsp;kHz. The MOSFE ...is interrupted by the action of the switch so that the switch continually switches rapidly back and forth. This type of electromechanical inverter switch, cal ...

...te these types of loads on a power source and the transformers, relays and switches which will distribute the power throughout the facility. ...a fully programmable, air- or water-cooled design used to simulate a solid state load and to provide constant power and current loading on circuits for prec ...

The value of optically coupling a solid state light emitter to a semiconductor detector for the purpose of electrical iso ...metrical, bidirectional opto-isolators is possible. An optocoupled [[solid-state relay]] contains a photodiode opto-isolator which drives a power switch, us ...

...one [[uplink]] cable. PoE power is fed into the PD (or PoE in) port. These switches may in turn power remote PoE devices using PoE pass through. ...ndspans and midspans. Endspans (commonly called PoE switches) are Ethernet switches that include the power over Ethernet transmission circuitry. Midspans are p ...

...asing short-circuit currents produced by networks. Simple air-break manual switches produced hazardous arcs when interrupting high voltages; these gave way to ===Solid state=== ...

...rchive-date=25 June 2007 }}</ref><ref name="guarnieri 4"/> The first solid-state metal diode suitable for general power uses was developed by Ernst Presser ...solid-state [[rectifier]], but it was not until the early 1970s that solid-state devices became the standard in HVDC, when GE emerged as one of the top supp ...

...an electronic circuit which charges capacitors from the input voltage and switches these charges in such a way that, in the ideal case, exactly twice the volt ...e. The switching elements are simple diodes and they are driven to switch state merely by the alternating voltage of the input. DC-to-DC voltage doublers ...

...shless DC electric motor|brushless DC motors]] which use [[semiconductor]] switches. {| style="width:200px; float:right; border:1px solid #ccc; background:#f9f9f9; font-size:88%; line-height:1.5em;" ...

...d semiconductor switches. Historically, even synchronous electromechanical switches and [[motor-generator set]]s have been used. Early radio receivers, called ...types. These are [[thyristor]]s or other controlled switching solid-state switches, which effectively function as diodes to pass current in only one direction ...