timer circuit

I am working on a traffic light control system for an intersection with a **main road (Vp)** and a **secondary road (Vs)**, using: - **Vehicle detectors**: - **Dp** (main road). - **Ds** (secondary road). - **Pedestrian buttons**: - **Pp** (to cross the main road). - **Ps**...

I need help creating a countdown circuit. I want to have a switch that when is turned on will start a countdown from 10 seconds and when hitting zero it will energize a 120v relay circuit turning on a light. Which will remain on till switched off. I am wanting to simulate a countdown to rocket...

Hi everyone, I am getting ready to build a frequency divider board for a Z80 game console project. I have a 32MHz active crystal oscillator and want to divide down this to produce the following frequencies that will be used across varying components of the project: 32 MHz 16 MHz 8 MHz 4 MHz 2...

Hey all! I recently installed led back lighting on our TV setup. Unfortunately, the USB outlets on the tv are always powered. I have one of these energy conserve power strips (https://a.co/d/aLvpjJb) which detects when the TV is pulling more then "idle" current and then flips a relay which...

I have been working to design a circuit that uses a 555 timer as a pulse width source. The circuit I have made works well but if the button gets held down the 555 just continuously fires. And then eventually starts to oscillate weirdly. I would like the 555 timer to fire only once regardless...

I have a customer that has a power washer hooked up to a Start-Stop Push Button control circuit. They want to add a timer where once the start button is pushed, will shut off the power washer automatically after a certain period of time (ie; 5 min). What kind of timer do I need to do this and if...

Saw this thread on the same topic, but it was suggested I start my own, so here goes. Former thread: https://forum.allaboutcircuits.com/threads/cd4060b-timer-circuit-design-12-hour-on-off-repeat.156495/page-2#post-1511407 Looking to power my Japanese garden lantern with a 3.85v phone battery...

Hi Everyone, my DT project includes an inductive charger. I would like to build a circuit that when a voltage is received from the inductive charger (9Vdc in ~5Vdc out) one LED blinks then after 10s it remains constant. Then turns off when voltage is stopped. I’m not entirely sure how to go...