There have been many different ideas presented for increasing the acoustic output of a piezo buzzer or ultrasonic transducer. Most of them involve rather complicated circuitry that drives up the total ...

Explore how to build a DIY electric motor using simple, readily available materials in this detailed tutorial. Watch ...

Here is a VLF receiver tuned to 300 kHz designed to detect the crackle of approaching lightning. A bright lamp flashes in sychrony with the lightning bolts indicating the proximity and intensity of ...

Dear Pat: I live in an older house with a few electrical problems. I want to fix some of these problems myself. What type of special tools should I get for these types of simple electrical projects? — ...

A simple circuit is a chain of different parts with wires and switches which allows electricity to flow around. All electrical appliances use circuits. For electricity to flow correctly, the circuit ...

Learn how to make a simple lemon battery and use it as an emergency phone charger in this hands-on science experiment. Watch ...

Across the entire sphere of electronics and electrical engineering, there aren’t many principles that are as fundamental as Ohm’s Law.  Named after the ...