It’s an electromagnet pendulum analog circuit. Whether you’re building it, or just studying the schematics, this is a fun way to brush up on the non-digital side of the craft. The pendulum is ...

A solenoid engine is a curiosity of the electrical world. By all measures, using electricity to rotate something can be done almost any other way with greater efficiency and less hassle.

Figure caption, A solenoid, shown here in cross section, has a stronger electromagnetic field than a single straight wire The north pole of the electromagnet can also be found by using your right ...

Figure caption, A solenoid, shown here in cross section, has a stronger electromagnetic field than a single straight wire The north pole of the electromagnet can also be found by using your right ...