One instrument for measuring and identifying static electricity is an electroscope. An imbalance in an objects electric charges results in static electricity. The electroscope is used to measure the presence and amounts of static electricity. The electroscope is simply a conductor. An electroscopes charges fluctuate and respond to an object when it comes into touch […]
Simple Electronic Stethoscope Circuit
The construction of a circuit for a specific kind of stethoscope is explained in this article. To increase the bodies sensitive sounds such as heartbeat and lungs the standard stethoscopes uses a tube. This electronic stethoscope uses tiny electrical components to significantly boost sound quality and the volume. This can enhance the medical staffs capacity […]
Simple Acupuncture Point Locator Circuit
An Acupuncture Point Locator Circuit is a device that helps in locating specific spots in the human body. Thin needles are inserted into specific of the body parts so as to reduce pain in acupuncture which is an ancient medical practice. Such special sites are referred to as acupuncture points or simply acupoints. They are […]
Simple Coffee Temperature Indicator Circuit
Ever burnt tongue on coffee that is way too hot? This post shows how to build a special circuit that tells exactly how hot your coffee is! It uses a sensor to measure the temperature and lights LEDs to show if it is just right for drinking. This way one can enjoy coffee at the […]
Simple RF Field Strength Meter Circuit
The construction of a radio wave measuring device is explained through this circuit! Both radio broadcasts and cell phone transmissions use radio waves which are undetectable signals. This application is useful for radio lovers, engineers and newcomers to find out the strength of particular signals in certain regions. In order to improve their radio antennas […]
AVC Automatic Volume Control Circuit
This circuit functions similarly to a self adjusting volume knob. It automatically adjusts the volume to a right level after listening to the incoming sound such as music or a voice. Thus if the music is soft it becomes slightly louder. Also it becomes somewhat quieter if the song is played at a high volume. […]