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1 Channel Optocoupler Relay Board
Relay board module is used for controlling higher current loads from your microcontroller development board, PC parallel port, or Arduino Uno. This board has one (1) on-board relay which can switch up to 7Amps. Relays terminals (C, NC, NO) are accessible through screw terminals which makes wiring up the board very easy. The relay is safely driven by transistor BC547 hence your input device, such as Arduino, is protected from the relay circuit. There is a freewheeling diode that will further protect your microcontroller from relay kickback. Single-channel 12 volt relay connections are
- Connect VCC to the 12-volt power supply
- The control signal is used to control the relay. If the signal will be HIGH (5V) the relay will be switched to NO(Normally Open) and if the signal is LOW (0V) the relay will be switched to Normally Connected (NC)
- If the control signal is high the led will glow and Vice- versa.
This is a 12V 1-Channel Relay interface board that can be controlled directly by a wide range of microcontrollers such as Arduino, AVR, PIC, ARM, 8051, and so on.
- 1 x 1CH Optocoupler Relay Board
|Number of Channels||1|
|Dimensions||3 x 2 x 1cms|
1. Is an optocoupler required for a relay?
- Yes, Relays usually are driven using optocouplers, which offer isolation between the analog and digital grounds to ensure that switching currents in the relay coils do not affect the noise margin of the digital circuit.
2. What is a 1 channel 5V relay board?
- The 1 Channel 5V Relay board provides a single relay that can be controlled by any 5V digital output from your microcontroller. Screw terminals are used to access the relay, which can handle up to 2A of current. The status of the relay is indicated by a handy LED.
3. Where can I use the single-channel relay board?
- The Single Channel Relay board is a convenient board that can be used to control high voltage, and a high current load such as motor, solenoid valves, lamps, and AC loads. It is designed to interface with microcontrollers such as Arduino, PIC and etc.