- Electronics Projects
- 1.5v to 220v AC simple inverter
- Build Simple AM Radio receiver at home
- Simple Uninterruptible Power Supply (UPS) Circuits
- Single Transistor Amplifier Circuit
- 3.7v Lithium Battery Level Indicator
- LED Chaser using transistors
- Electronics Projects for Beginners
- Simple Latch Circuit Using Transistors
- DC to AC Power Converter circuit feature working
- Fire Alarm Circuit using Transistor
- Two Transistor Amplifier
- Laser Security System
- Music Operating Dancing LEDs light
- Volts Booster Circuit Using Ferrite ore transformer
- Touch switch circuit using Transistor
- Two transistor FM transmitter project
- LED Flasher Using Timer IC 555
- DC Voltage Power Supply Using The LM317
- Electronic Mosquito Repellent Circuit
- Light Dimmer Circuit 1000 Watts Using BT139
- Non-Contact Voltage Detector by using transistor
- 4 volts simple inverter project: explanation
- Flashing Police Lights Circuit
- Light Dependent Resistor, its types and applications
- 100 watts inverter circuit working and applications
- Stereo Audio Amplifier 5W Circuit using TEA 2025 IC
- Small High Volts using 2Sc 1815 transistor
- Electronic Doorbell Circuit using a 555 and CD4017
- Touch On Touch Off Switch Circuit Using 555 timer
- LM386 Audio Amplifier Circuit
- IC 4440 Amplifier Circuit
- Neon Lamp Circuits Working and Application
- Low Power Audio Amplifier Using integrated circuit
- Voltage Regulator Circuits using Transistor and Zener Diode
- Water Level Indicator Circuit Using Transistor
- LED Chaser using CD4017 IC
- Motion Sensor Light Switch
- Melody Generator Using IC um66
- Water Level Indicator Using IC
- Led Light to 220v AC
- LiFi Data Transfer System, WiFi vs LiFi
- How to Connect a CAR Battery | Polarity Checker
- Voltage Level Indicator Circuit
- Security Alarm Using PIR Sensor
- Battery Level Indicator Using LM 3914
- Single Transistor FM Transmitter circuit
- Different types of Capacitor
- Light Emitting Diode (LED) Types of LEDs
- Different Types of Relays
- Piezo buzzer features equivalent
- Clap Switch : Circuit and Its Working
- Different Types of diode, working and features
- PC817 Optocoupler Pinout, Equivalent, Features and applications
Different Types of Relays
This article is about Different Types Of Relays. A Relay is a switching device it works to change the state of an electric circuit or electric current from one state to another. Relays are classified according to their working and structure. Well, known categories include protective, regulating, reclosing, auxiliary, and monitoring relays. Protective relays monitor these parameters: current, voltage, and power; and if these parameters violate from mentioned limits they generate an alarm to inform the situation of the circuit. Pin configuration of Relay.
Different Types of Relays
There are many types of relays, depending on the operating principle relays are classified into different types such as:
- electromagnetic relays
- Solid State Relays
- Hybrid Relays
- thermal relays
- Reed Relays
Electromagnetic Relays
These relays are built with electrical, magnetic tools, and mechanical, and have an operating coil and mechanical contacts. So, when the coil gets operated by a supply system then mechanical contacts get opened or closed. The kind of providers can be AC or DC.
Solid State Relays
Solid State uses solid-state tools to act the switching operation without moving any parts. Because the control energy needed is very low compared with the output power to be controlled by these relays that result in the power gain is higher when compared to the electromagnetic relays. These are of different kinds: reed relay coupled SSR,photo-coupled SSR, transformer coupled SSR, and so on.
Hybrid Relay
These relays contain electromagnetic relays and electronic tools. Generally, the input part contains the electronic circuitry which acts as rectification and the other control functions, and the output part involves electromagnetic.
Thermal Relay
These relays are doing increase the ambient temperature from the limit, and direct the contacts to switch from one position to other. These are basically used in motor defense and consist of bimetallic elements such as temperature sensors as well as control elements. Thermal overload relays are the best example of these relays.
Reed Relay
Reed Relays consist of a set of magnetic strips which is closed within a glass tube. This reed operates as both an armature and a contact blade. The magnetic field applied to the coil is folded around this tube which makes these reeds motion so that switching work acts.
Relays are also available with different pin configurations like three-pin, four-pin, and five-pin relays. Switching contacts can be DPDT, DPST, SPDT, and SPST types. Some of the relays are commonly open (NO) kind and the others are commonly closed (NC) kinds.
