Point out that most electronic devices run on a small current that is amplified. You’re going to build two simple transistor circuits, each using a single transistor. These circuits will allow ...

A great example is this simple wireless AC current detector from [NEW PEW]. The circuit is a simple one, and a classic. The spring from a ballpoint pen is soldered to the base of a BC547 ...

The film explains how electric current is generated at power plants and delivered to homes through wires. It describes the concept of electric circuits, including closed and open circuits ...

The current limiting circuit, though, is where things get interesting. Rather than use an op-amp, [DiodeGoneWild] chose a simple discrete transistor current-sense circuit. To make it less ...

As the current in the circuit varies, the receiving diaphragm ... Note: Although this procedure is relatively simple, it can have its difficulties. If you're having trouble, try adding a second ...

The current is different in different parts of ... or parallel to, each other. This simple circuit is like a one-bulb version of a building’s lighting circuit. In a parallel circuit, if you ...