Mosquitoes are one of the most irritating bugs and they spread many diseases. Here we are talking about a method that would most likely drive the mosquitoes away with the help of certain frequency generators. Researchers have found that insects are typically allergenic to…
This is a simple temperature sensor circuit diagram using the LM335 temperature sensor and LM3914 IC. Here the complete temperature range becomes observable through an array of LEDs. The LM35 is an integrated circuit temperature sensor for sensing temperature on a degree Celsius scale. The LM3914 is…
Here we are going to discuss a simple timer IC 555 project. The 555 timer IC can be used as an audio amplifier with an astable multivibrator configuration. It functions to carry out pulse width modulation (PWM) of the audio signal. The Current(I) capacity of the 555 timer…
Here circuitsgallery comes with the simplest mini audio amplifier circuit schematic using LM386 low voltage audio power amplifier IC. This circuit is applicable to power medium-sized speakers from a music player that can only drive earphones (lm386 headphone). The LM386 is a low voltage power amplifier…
How to make a simple wire loop alarm? It’s just a matter of only four components. Namely, transistor, resistor, buzzer, and battery. Place this system as a front door alarm. And observe the magic when anyone opens the door. It…
PIR sensors are widely applied in wireless residential security systems, home alarms systems, and many more security circuits as motion detector sensors. A typical PIR sensor detects the infrared red (IR) waves from the human body. And, so, it is…
Here is an LPG gas leakage sensor alarm circuit that detects the outflow of LPG gas and alerts the user via audio and visual indications. The heart of this simple engineering project circuit is a gas sensor module SEN-1327. MQ-6…
How to measure water purity? How to test water quality using a simple electronics project? You can perform water purity measurement and water quality analysis using this water quality checker project circuit. This circuit is built around a simple LDR (Light Depended Resistor) and some discrete components. The detailed circuit…
You are now going to be introduced with a new audio power amplifier schematic built around TIP Darlington pair transistors. You can use this circuit for home audio power amplifiers and car audio amplifiers. The TIP142 and TIP147 Darlington pair transistors form a push-pull high power amplifier configuration while the two BC558 PNP transistor…