J Teck

Alarm

HEAT SENSOR

This circuit activates a buzzer and lights an LED when the temperature in its vicinity increases. IC1 is used as a Monosta…

byEngr Babar Ali -October 06, 2021

Alarm

FIRE ALARM 2

This is the circuit of a Fire sensor that produces loud beeps when it detects heat from fire. The circuit uses a Thermister…

byEngr Babar Ali -October 06, 2021

Alarm

FIRE ALARM

This is the circuit of a Fire sensor that produces loud beeps when it detects heat from fire. The circuit uses a Thermister as f…

byEngr Babar Ali -October 06, 2021

Alarm

Entry Alarm

Entry Alarm This is an Infrared based Brocken beam alarm to protect doors and entry passages. It gives a loud alarm when som…

byEngr Babar Ali -October 06, 2021

Alarm

COUNT DOWN TIMER

This circuit can be used as a simple timer and it gives beeps when the timing cycle ends. It is designed as a 4 minute timer. …

byEngr Babar Ali -October 06, 2021