This solid-state electronic compass circuit employs a one-of-a-kind sensing technology that generates two finely defined points oriented on magnetic north, as displayed by an LED. This allows for a rapid […]
Audible Spirit Level Indicator Circuit
This audible electronic spirit level circuit is extremely valuable for folks with hearing or vision imperfections. Not only that, but it is also useful for people who wish to align […]
3 in 1 Circuit Fault Tester Circuit
The 3 in 1 tester circuit explained in the following article is actually a combination of signal injector, signal tracer, and logic probe, which allows the user to accurately test […]
LED Sound Level Indicator Circuit
The proposed LED sound level meter will detect the sound hitting the MIC, and indicate its volume level through an array of LED, connected as a bar graph. Circuit Description […]
Simple Crystal Tester Circuit
The proposed simple crystal tester circuit can be used for accurately testing the operating frequency of any standard crystal, quickly. The figure below shows a crystal checker circuit schematic. In […]
Loudspeaker Power Indicator Circuit
This circuit will reveal the height level of an input signal placed on a speaker. It is mainly meant as a fool proof device when linked to an amplifier of […]
