simple mat switch circuit | Next Electronics

This circuit emits a loud tone if the input switch (S2) is not retriggered at designated intervals. If the user falls asleep and fails to re-trigger the circuit, it will continue to sound until S2 is pressed. The circuit operates on...

Easy-auto-alarm

Refer to (a) for the timing information related to the alarm circuit depicted in (b). When departing from the vehicle, the arming switch should be flipped, and the door closed to activate the device. The subsequent opening of an entrance...

Security Monitor

This circuit can be utilized in a garden setting to detect unusual sounds or wildlife noises. It can also monitor sounds around a car parked in a remote location. The cable used for the setup can either be visible or...

circuits

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Single Alarm Circuit

This is a single alarm circuit. The circuit includes automatic exit and entry delays, a timed bell cut-off, and a system reset. It has provisions for normally open and normally closed inputs. The single alarm circuit is designed to provide security...

Automatic Turn-Off Alarm With Delay

In this circuit, IC1A and IC1B serve as a monostable multivibrator. Any input from the sensors SI through S5 triggers IC1A to produce a logic low signal, which activates IC1B, turning on Q1 until the capacitor C3 discharges through resistor...

Night Safety Light For Autos

This circuit activates the brake lights of a parked car when headlights from an approaching vehicle are detected, alerting the driver of the oncoming vehicle about the stationary car. LDR4 serves as the sensor, while LDR1 deactivates the circuit by...

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...

Multi Loop Parallel Alarm Circuit

This alarm features status LEDs connected to each inverter output, which indicate the status of the corresponding sensor. S8 is utilized to monitor the switches through the LEDs or to activate an alarm using Q1 and SCR1. Additionally, BZ1 should...