Relay Circuit Diagram Symbols - Wiring Draw And Schematic

A relay circuit diagram is one of the essential tools for any electrical engineer. It is used to illustrate the components of a circuit and the connections between them. As electronic circuits become more complex, the need for detailed information about the components and their functions is essential.

To effectively understand and work on an electronic circuit, one must be aware of the different symbols used in the diagrams. These symbols denote the various components used in the circuit and their respective functions. Therefore, it is important to comprehend the meaning of these symbols before working on a circuit diagram.

The most common symbol used in circuit diagrams is the relay. It is represented by an arrow pointing to the left and a small circle at the end. This symbol indicates that the component is a switch and is capable of controlling the current flow in a circuit. The arrow and the circle signify that it is a two-way switch.

A relay has several contacts. Each contact has a unique purpose. The common contacts on a relay are the normally open (NO) and normally closed (NC) contacts. The NO contact is represented by a single dot inside a circle, while the NC contact is represented by two dots inside a circle.

Other contacts such as common, normally open/closed, and normally open/closed with delay are also represented in the same manner. A common contact is shown with a single dot, while the other contact is denoted by two dots. The normally open/closed with delay is represented by three dots within a circle.

The power supply for a circuit also needs to be represented. This is usually represented with a lightning bolt. The lightning bolt symbol indicates the presence of a power source, and can be connected to other components in the circuit.

As well as the symbols used to represent the components, there are also symbols used to represent the connections between them. These symbols are known as connectors, and they denote the way in which a component is connected to another component. Common connectors include jumpers, terminals, and wires.

By understanding the symbols used in a relay circuit diagram, you will be able to create and design complex circuitry with ease. With knowledge of the symbols, you will be able to identify the different components and how they interact with each other. This understanding will also allow you to make modifications to the circuit with confidence.

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