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Make this Push Button Load ON, OFF (Set, Reset) Latching Switch Circuit using IC 555

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Apr 15, 2026
4:51

In this video, we will learn about a simple and reliable push-button ON/OFF controller using the NE555 timer IC, which you can build for any application which requires push button ON and OFF operation of a heavy load. This circuit works as a bistable latch, allowing you to control a relay using two push buttons, one for ON and one for OFF. We explain the complete working of the circuit step by step, including the role of each component such as the resistors, transistor, relay, and protection diode. You will also understand how the 555 timer operates in bistable mode and how it can store the ON or OFF state even after the button is released. This circuit is ideal for practical applications like appliance control, water pump motor start-stop systems, automation projects, and electronic switching without using a microcontroller. If you are an electronics enthusiast, student, or hobbyist, this is a must-know circuit for your projects. More info is given in this link: https://www.homemade-circuits.com/set-reset-circuit-using-ic-555/ #555timer #NE555 #ElectronicsProjects #RelayControl #PushButtonSwitch #BistableMultivibrator #DIYElectronics #CircuitDesign #ElectronicsTutorial #AutomationProjects #ElectronicsForBeginners #RelayDriver #TransistorSwitch #ElectronicSwitch #EngineeringProjects

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Make this Push Button Load ON, OFF (Set, Reset) Latching Switch Circuit using IC 555 | NatokHD