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What does a channel relay do?
It has a control system and (also called input circuit or input contactor) and controlled system (also called output circuit or output cont actor). It is frequently used in automatic control circuit. To put it simply, it is an automatic switch to controlling a high-current circuit with a low-current signal.
How do I use a 2 channel relay?
The relay has two outputs-normally open and normally closed (NO and NC). When the IN1 or IN2 pin is connected to ground, NO will be open and NC will be closed, and when IN1 or IN2 is not connected to ground the opposite occurs.
How does a 4 channel relay work?
The 4 Channel Relay Module is a convenient board which can be used to control high voltage, high current load such as motor, solenoid valves, lamps and AC load. It is designed to interface with microcontroller such as Arduino, PIC and etc. The relays terminal (COM, NO and NC) is being brought out with screw terminal.
How does an interface relay work?
High voltage interface relays, a.k.a., interface relays: or coupling relays or insulating interfaces is a special class of electrical relays designed to provide informational and electrical compatibility between functional components isolated from each other and not allowing for a direct connection due to a high …
When does the 1 Channel relay turn on?
Relay will turn on when this input goes below about 2.0V VCC – Connect 5V to this pin. Is used to power the opto couplers The 1 channel relay module could be considered like a series switches: 1 normally Open (NO), 1 normally closed (NC) and 1 common Pins (COM).
What can I do with an Arduino Channel relay?
This circuit has so many applications in home automation and for internet of things jiggery-pokery. Because the relay can handle up to 250V it will be able to control power to any 240V device in the house from lights to audio equipment.
When to use a relay in a circuit?
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. 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.
What are the pins on the relay module?
The following figure shows the relay module pinout. The six pins on the left side of the relay module connect high voltage, and the pins on the right side connect the component that requires low voltage—the Arduino pins. The high-voltage side has two connectors, each with three sockets: common (COM), normally closed (NC), and normally open (NO).