This is a very simple timer circuit. When you push down to turn on the S1, this will turn on the LED and it also will charge the C1 Capacitor. Then upon releasing the push button switch, the LED will stay lit for couple of seconds until C1 is completely discharged.

A power switch using a push button. It turns on with a single press and only turns off when you hold the button down. This could be used to get functionality similar to most laptops where a single press when on will initiate a "soft" shutdown but you can force a "hard" shutdown by holding it down.

A momentary or non-latching switch which causes a temporary change in the state of an electrical circuit only while the switch is physically actuated.

A momentary or non-latching switch which causes a temporary change in the state of an electrical circuit only while the switch is physically actuated.

A momentary or non-latching switch which causes a temporary change in the state of an electrical circuit only while the switch is physically actuated.

Welcome to your new project. Imagine what you can build here.

Welcome to your new project. Imagine what you can build here.

A momentary or non-latching switch which causes a temporary change in the state of an electrical circuit only while the switch is physically actuated.

A power switch using a push button. It turns on with a single press and only turns off when you hold the button down.

A power switch using a push button. It turns on with a single press and only turns off when you hold the button down.

A power switch using a push button. It turns on with a single press and only turns off when you hold the button down.

Push button once to ON, Push button Hold to OFF.

Wi-Fi Enabled Audio Notification System with Push Button Trigger and Explicit NodeMCU-12E Pin Mapping

Push Button 6mm 7.3mm Square Plunger 50mA Brick nogging 6.3mm SPST 24V SMD,6.3x6x7.3mm Tactile Switch

Push start button for a non immobiliser car. Push the button once sw1, and accessories come on, Push the button Once again sw1. and the ignition comes on. Hold your foot on the brake sw2 and the clutch sw3, Push the button sw1 and hold it down until the car starts. only releasing it after the car starts, Then press the button sw1 once to turn the vehicle off. using relays.