Relay Circuit Diagram And Operation

Relay construction and operation.

Relay circuit diagram and operation. A switch is connected to the load. Light sensor circuit working operation. These relays provide a time delay between the energizing or de energizing of the coil and movement of the armature. There are a variety of electrical and electronic devices which are classified as output devices such devices are used to control or operate some external physical process of a machine or device.

A relay is an electrically operated switch it consists of a set of input terminals for a single or multiple control signals and a set of operating contact terminals the switch may have any number of contacts in multiple contact forms such as make contacts break contacts or combinations thereof. It is provided with both logic and analog circuits. The light sensor circuit is an electronic circuit designed using light sensor ldr darlington pair relay diode and resistors which are connected as shown in the light sensor circuit diagram. The applications of the relay are limitless its main function is to control the high voltage circuit 230v circuit ac with the low voltage power supply a dc voltage.

Relays are not only used in the large electrical circuits but also used in the computer circuits in order to perform the arithmetic and mathematical operations in it. A relay logic circuit is an electrical network consisting of lines or rungs in which each line or rung must have continuity to enable the output device. Such relays are called time delay relays. The electromechanical relay can be defined as an electrically operated switch that completes or interrupts a circuit by physical movement of electrical contacts into contact with each other.

The relay is an electromechanical switch used as a protecting device and also as a controlling device for various circuits equipments and electrical networks in a power system. When analyzing the operation of a relay control system it is helpful to have some way to temporarily denote the conductive status of switch contacts and the energization status of relay coils i e. The schematic diagrams for relay logic circuits are often called line diagrams because the inputs and outputs are essentially drawn in a series of lines. Energized relay on as shown in the circuit the current flowing through the coils represented by pins 1 and 3 causes a magnetic field to be aroused.

A typical circuit consists of a number of rungs with each rung controlling an output. A time delay relay consists of a normal electromechanical relay along with a control circuit to control the relay operation and timing. Electronic relay switch circuit diagram and its working. This switch is controlled by the coil in the control circuit.

Now let us take the different steps that occour in a relay. When controlling high current circuits the heating that can be generated by the current through the contacts requires the use of contactors instead of relays in these circuits. The structure and operation of the relays vary according to the type. A notation we might sketch using pencil on a diagram to help us follow the operation of the circuit.