One transistor, a single diode, and one or two additional passive parts may be connected to create an incredibly basic temperature indicator circuit. Detecting Heat with a Transistor As is […]

A circuit described as the LED AC mains voltage level indicator may be used to monitor and show the current voltage status of any 220 V or 120 V mains […]

A series of LEDs is illuminated successively in a push-pull switching fashion in response to an audio source, indicating the different intensities of the music. This type of indication is known […]

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 […]

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 […]

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 […]