A stud finder is an electronic device specially created for scanning concrete walls and locating metallic objects, such as nails, bolts, pipes, hidden beneath the wall. The following article explains […]
3 Useful Logic Probe Circuits Explored
These simple yet versatile 3 LED logic probe circuits can be used to test digital circuit boards such as CMOS, TTL or similar for troubleshooting the logic functions of the […]
Simple Frequency Meter Circuits – Analogue Designs
The following simple analogue frequency meter circuits can be used for measuring frequencies which may be either sine wave or square wave. The input frequency which is to be measured […]
Digital Thermometer Circuit – Uses a Solar Cell for Power
The articles explains a digital thermometer circuit project that works without a battery. Instead of a battery the circuit utilizes a small solar cell and operates by deriving power from […]
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 […]
Function Generator Circuit using a Single IC 4049
In this post we will learn how to build 3 simple function generator circuits using a single IC 4049, for generating accurate square waves, triangle waves, and sinewaves through easy […]