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Input voltage level support ttl as well as cmos.
8 channel relay board circuit diagram pdf. With handle ac supply directly for home automation. Optocoupler is a component that transfers electrical signals between two state of isolation circuits by using light and prevent high voltage from affecting the system receiving the signal. Easy interface with microcontrollers based projects and analog circuits. But pcb of new version of 8 channel relay module.
This project is a general purpose 8 channel relay board. But in this bord is old. It is equipped with highcurrent relays that work under ac250v 10a or dc30v 10a. Input supply 12 vdc read more.
Relays are frequently used in our electronics applications specially when we need to drive high loads from microcontroller circuits. The 8 channel relay module has its own optocoupler also called opto isolator photocoupler or optical isolator. Input voltage level support ttl as well as cmos. Easy interface with micro controllers based projects and analog circuits.
It is equipped with high current relays that work under ac250v 10a or dc30v 10a. So in this diy project we make a 4 channel relay driver circuit to be used in relay based applications. It can be used to control various appliances and equipment with large current. 8 channel relay board is a simple and convenient way to interface 8 relays for switching application in your project.
Two input signal connectors are provided to allow seamless cabling to a 501a signal generator using. 8 channel 5v optical isolated relay module this is a low level 5v 8 channel relay interface board and each channel needs a 15 20ma driver current. This is a 5v 8 channel relay interface board be able to control various appliances and other equipment with large current. Description 8 channel relay board is a simple and convenient way to interface 8 relays for switching application in your project.
This module are work same. The 8 channel relay board offers 8 relays that can be individually configured as either a contact closure form a or as a voltage source if power is connected to an auxiliary connector. It can be controlled directly by micro controller raspberry pi arduino 8051 avr pic dsp arm arm msp430 ttl logic 5v 8 channel relay interface board and each one needs 15 20ma driver current. It can be used to control various appliances and equipment with large current.
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