A simple dark sensor circuit with a buzzer is an easy to make electronic project that can detect when there is no light and then make a sound. This kind of circuit can be used in different areas like automatic night lights, security systems and alarms. It works by using a LDR along with a […]
Sensors and Detectors
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Simple LED Alert for Telephone Off-Hook Detection Circuit
This LED Alert for Telephone Off-Hook Detection Circuit is designed to show when a phone line is in use by lighting up an LED. It works by sensing a change in voltage on the phone line when the handset is picked up which means the line is off-hook. This circuit can easily be used with […]
Simple Mobile Incoming Call Detector Circuit
The Simple Mobile Incoming Call Detector is a clever circuit designed to pick up incoming calls on a mobile phone and light up an LED. This circuit is really useful in loud places where you might not hear the regular ringtone. It works by detecting the radio frequency RF signal that a phone sends out […]
Simple Metal Detector Circuit using IC CS209A
A Simple Metal Detector Circuit is a cool electronic device that helps find metal objects nearby. People use these gadgets for many things like checking security, searching for treasure and in different industries. In this article we will talk about a simple but powerful metal detector circuit that uses just one chip the CS209A. This […]
Simple 12V DC Fan Speed Controller Circuit
A simple 12V DC fan speed controller is an important circuit that helps control how fast a fan runs by adjusting the voltage. In this post, we will look at a 12V DC fan speed controller that uses the IC LM2941. This component is known as a low dropout voltage regulator and can manage up […]
Simple Shock Sensor Alarm Circuit
The Simple Shock Sensor Alarm Circuit is a simple but effective design that can detect vibrations or shocks and then trigger a loud alarm using a piezo buzzer. This easy shock sensitive alarm circuit that can be used in lots of places from homes to automobiles. This circuit is also useful for different purposes like […]