There is an intermediary part between input part and output part that is used to coupling and isolate input current, as well as actuate the output. It also contains an actuator module (output) which can energize or de-energize the connection of controlled circuit. Generally speaking, a relay contains an induction part which can reflect input variable like current, voltage, power, resistance, frequency, temperature, pressure, speed and light etc. It is widely adopted in devices of power protection, automation technology, sport, remote control, reconnaissance and communication, as well as in devices of electromechanics and power electronics. The advantages of a relay lie in its lower inertia of the moving, stability, long-term reliability and small volume. To put it simply, it is an automatic switch to controlling a high-current circuit with a low-current signal. It is frequently used in automatic control circuit. It has a control system and (also called input circuit or input contactor) and controlled system (also called output circuit or output cont actor). Osoyoo Basic Board (Fully compatible with Arduino UNO rev.3) x 1Ī relay is an electrically operated device.In this lesson, we will show you how the 1-Channel Relay Module works and how to use it with the Osoyoo Uno board to control high voltage devices. Relays are used where it is necessary to control a circuit by a separate low-power signal, or where several circuits must be controlled by one signal. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Note: ALL OSOYOO Products for Arduino are Third Party Board which is fully compatitable with Arduino IntroductionĪ relay is an electrically operated switch.
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