In this Simple Shock Sensor Alarm Circuit we can feel vibration or shock, which then makes loud sound with piezo buzzer. This circuit is easy to make and can be used at home, in car and in many places. It is good for security, stop theft and in feel movement. Main parts of the circuit […]
Alarm Circuits
Super Sensitive Intruder Alarm Circuit
This article for Super Sensitive Intruder Alarm Circuit talks about very simple but strong intruder alarm circuit. It is very sensitive. These circuit is good for security. They can catch very small intrusions. This circuit uses IC 741 op-amp and IC 555 timer to work. It also use LDR (light sensor) as main part so […]
Simple Charger Breakdown Alarm Circuit
In electronic system good charger circuit very important. It give power to things like battery. This Simple Charger Breakdown Alarm Circuit check charger working or not. If problem found then buzzer makes sound. So user know fast if charger fails and this stop battery from drain or damage. It uses easy parts like transistor, resistor, […]
IC 555 Timer Based Vibration Alarm Circuit
IC 555 Timer Based Vibration Alarm Circuit is any easy to make. It senses vibration and gives sound and light alert. This circuit is used in security systems, factory machines and anti-theft devices. Main part is IC 555 timer which sends steady signal when sensor feels vibration. Circuit Working: Parts List: Component Specification Quantity Resistors […]
Easy DIY Timer Alarm Circuit with 555 IC
IC 555 is very popular and useful chip in electronics. It works in different modes with bistable, astable and monostable. Here we used IC 555 in monostable mode to make a Easy DIY Timer Alarm Circuit with 555 IC. We can set time and after that the buzzer or alarm will ring. It is nice […]
Build Your Own Door Knob Touch Alarm Circuit
Todays time safety is very important. This Build Your Own Door Knob Touch Alarm Circuit can help protect home and office. This small project is Door Knob Touch Alarm using 555 IC. It can sense when someone touches the door knob. If someone touches then alarm makes loud sound. It scares intruder and warn owner […]