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8 Channel Relay Board
author: Rajkumar Sharma



 

This project is a general purpose 8 Channel Relay Board.




Description


8 Channel Relay Board is a simple and convenient way to interface 8 relays for switching application in your project. Input voltage level support TTL as well as CMOS. Easy interface with Microcontrollers based projects and analog circuits.

Specifications:

Input supply 12 VDC @ 336 mA
Output eight SPDT relay
Relay specification 5 A @ 230 VAC
Trigger level 2 ~ 15 VDC
Header connector for connecting power and trigger voltage
LED on each channel indicates relay status
Screw terminal connector for easy relay output and aux power connection
Four mounting holes of 3.2 mm each
PCB dimensions 152 mm x 60 mm



 Schematic


download Schematic in PDF

 

 Parts List



 PCB Design


 

PCB top and bottom layers

 




 
 

 
120x90 spot

 

 

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