fire alarm circuit using ic 555

A light timer/dimmer, similar to those found in dome lights, is desired, but guidance on how to begin the project is needed. A light timer/dimmer circuit is designed to control the brightness of a light source and to provide a timed...

Car Headlights Timer Circuit Schematic

This device is a simple timer that keeps the headlights of a vehicle on for approximately 1 minute and 30 seconds, allowing for illumination when accessing dark areas without the need to return to switch off the lights. Pressing P1...

Timer for Charger

Timer for Charger Circuit Diagram. This timer circuit assists in maintaining the battery in optimal condition by enabling automatic charging for 5 to 6 hours daily, allowing the device to be left unattended. The timer circuit for the charger is designed...

APPLIANCE TIMER

This circuit controls intervals of up to 1 hour in 1-second increments, as programmed by thumb wheel switches S1 and S2. It consists of a two-stage programmed counter driven by a 1-second clock derived from the 60-Hz power line. The...

Automatic Room light Control With Bi Directional Visitor Counter

The objective of this project is to create a controller-based model that counts the number of individuals entering a specific room and activates the lighting accordingly. This is achieved through the use of sensors that detect the current number of...

Preset Outage Timer of Electric Cooker Remote_Control

The figure illustrates a preset outage timer circuit designed for an electric cooker. The timing range of the circuit extends from 1 hour to 12 hours, adjustable via a potentiometer (PR). The timing mode operates on a counting basis, and...

24 Hour Timer

These two circuits are multi-range timers that offer periods of up to 24 hours and beyond. Both circuits are fundamentally similar, with the key distinction being that Version 1 energizes the relay when the time expires, while Version 2 de-energizes...

Timer circuit

This precision solid-state time delay circuit features both delayed off and delayed on switch functions, which can be interchanged by simply swapping the relay contacts. The described time delay circuit is designed to provide precise control over the timing of switching...

Jogging TimerCircuit

3V battery-powered circuit that emits a beep after a fixed delay of several minutes. This circuit was created in response to requests from users seeking a timer functionality. The described circuit operates on a 3V power supply, making it suitable for...