In this touch operated potentiometer circuit we have two touch pads, which produce a slowly increasing voltage at the output when one touch pad is touched, and a decreasing voltage when the other … [Read more...] about Simple Touch Operated Potentiometer Circuit
Blog
Digital Theremin Circuit – Make Music with your Hands
Named after its creator, the theremin originated in the Soviet Union in the beginning of 1920's. This comprised of a container installed with a couple of antennas. It did not have any keyboard to … [Read more...] about Digital Theremin Circuit – Make Music with your Hands
Listen to UHF and SHF (GHz) Bands with this Simple Circuit
This simple two IC circuit can be used for capturing and listening to frequencies in the GHz range. Receivers designed to cover frequencies as high as several gigahertz (which is many thousand … [Read more...] about Listen to UHF and SHF (GHz) Bands with this Simple Circuit
Bluetooth Stethoscope Circuit
In situations as critical as a COVID-19 pandemic, a doctor is the one personnel who is the most susceptible to getting infected by the virus from a patient. Therefore, doctors are being continually … [Read more...] about Bluetooth Stethoscope Circuit
Signal Injector Circuits for Quick Troubleshooting of all Audio Equipment
This simple signal injector circuits explained below can be accurately used for troubleshooting and alignment applications of all kinds of audio and high frequency equipment. 1) Using a Single IC … [Read more...] about Signal Injector Circuits for Quick Troubleshooting of all Audio Equipment
How Contactless Infrared Thermometers Work – How to Make One
In this post we will learn the basic working concept of thermal scanners or contactless IR thermometers, and also learn how to make a practical DIY prototype of the unit without Arduino. In the … [Read more...] about How Contactless Infrared Thermometers Work – How to Make One