4-Channel Relay Driver Module

2 years ago 8003
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In this project, we will make a 4-Channel Relay Driver Module Circuit for relay based applications. In this circuit, we have designed an isolated PCB for 4 relays. By using this Relay Board, we can operate 4 AC appliances at a time. We have put a three pin screw terminal blocks (NC, Nuteral, NO) for connecting appliances. Below are the circuit diagram and PCB layout designs of the relay driver.

For more details about this circuit and design yourself, check out: 4-channel relay driver


4-Channel Relay Driver Module Circuit

4-Channel Relay Board PCB Layout


ID Name Designator Footprint Quantity Mounted
1 +5v J8 M1X4 1 Yes
2 Power J5 H3-5.0-15.5X8.0MM 1 Yes
3 Vcc J7 M1X2 1 Yes
5 BC547A Q1,Q2,Q3,Q4 TO92-INLINE 4 Yes
6 1N4007 D1,D3,D5,D7 DO-41 4 Yes
7 1k R1,R2,R3,R4,R5,R6,R7,R8,R9 AXIAL-0.3 9 Yes
8 PCF817 U1,U2,U3,U4 DIP4 4 Yes
9 SMD LED D2,D4,D6,D8,D9 1206 LED 5 Yes
10 Load1 J1 H3-5.0-15.5X8.0MM 1 Yes
11 Load2 J2 H3-5.0-15.5X8.0MM 1 Yes
12 Loa3 J3 H3-5.0-15.5X8.0MM 1 Yes
13 Load4 J4 H3-5.0-15.5X8.0MM 1 Yes
14 pwr J6 M1X2 1 Yes


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Comments (2)

ali97 Reply

can i use 5v relay instead of this

fetah71 Reply

Hello I am a customer at JLCPCB I want to order 4-Channel Relay Board Layout PCB I need 5 volt and not 12 volt how to do thank you

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