What is a PCB Power Relay ?

PCB Power Relay Features

PCB relays generally have induction coil mechanisms (input part) that can reflect certain input variables (such as total electric flow, working standard voltage, output power, characteristic impedance, frequency, temperature, pressure, speed, light, etc.); There is an electric actuator (part of the output) that can "turn on" and "turn off" the tested power circuit; The middle between the input part and the output part of the PCB relay is also an intermediate mechanism (the controller part) for coupling safety protection, action processing and controller of the output part.

Single contact structure

Examples of safety standatds

PCB Power Relay Types

Omron's power relays for printed circuit boards contribute to high functionality and safety of devices with wide variety of current capacities (3A-30A), contact structures, protective structures, and coil specifications.

PCB Power Relay Diagram

The power relays for the board have suitable structures according to applications, and are generally composed of a plurality of components as shown in the following figure. This figure shows an example of a hinged relay.

PCB Power Relay Application Examples

There are a wide variety of industries that use power relays that can directly switch loads such as motors, lamps, and heaters.

4-Channel Relay Driver Circuit and PCB Design

Components Required:

Relay Driver Circuit Explanation:

In this 4-Channel Relay Driver Circuit 4 Channel Infrared (IR) Remote is a simple kit using the famous HT12A and HT12D encoder / decoder chips from FBelec

Working and Demonstration:

For demonstrating the working of this Relay Module, we have used an Arduino Uno board for controlling relays. All four relays are connected with Arduino at 8,9,10 and 11th pins (In1, In2, In3, and In4), and 1 12v adapter is used for powering the circuit. We have connected 220VAC bulb at the terminal block of the PCB board and AC supply is also applied to the board.

Circuit and PCB Design using EasyEDA:

To design this Relay Driver Circuit, we have chosen the online EDA tool called EasyEDA. We have previously used EasyEDA many times and found it very convenient to use compared to other PCB fabricators. After designing the PCB, we can order the PCB samples by their low cost PCB fabrication services. They also offer component sourcing service where they have a large stock of electronic components and users can order their required components along with the PCB order .

Below is the Snapshot of Top layer of PCB layout from EasyEDA, you can view any Layer (Top, Bottom, Topsilk, bottomsilk etc) of the PCB by selecting the layer form the ‘Layers’ Window.

You can also view the PCB, how it will look after fabrication using the Photo View button in EasyEDA:

Calculating and Ordering Samples online:

After completing the design of PCB, you can click the icon of Fabrication output above. Then you will access the page PCB order to download Gerber files of your PCB and send them to any manufacturer, it’s also a lot easier (and cheaper) to order it directly in EasyEDA. Here you can select the number of PCBs you want to order, how many copper layers you need, the PCB thickness, copper weight, and even the PCB color. After you have selected all of the options, click “Save to Cart” and complete your order, then you will get your PCBs a few days later. And you may go with your local PCB vendors too with Gerber output of PCB layout. They are fabricating the PCB at very low rate which $2

After few days of ordering PCB’s I got the PCB samples

Soldering: after getting these pieces we have mounted all the required components over the PCB, and connected it with Arduino for demonstration.