Learn how to create your own portable fan with this step-by-step DIY tutorial. Using a DC motor, handmade propeller, simple ...

Learn how to build a homemade, battery-powered mini cleaning tool perfect for keeping your computer keyboard spotless. This ...

If the source of supply is d.c. (for example in a battery vehicle or a rapid transit system) a chopper-type converter is usually employed. The basic operation of a single-switch chopper was discussed ...

A high-current quad SPST analog switch can be configured as a full-bridge amplifier capable of driving low-power dc motors. By adding a sense resistor, an analog-to-digital converter (ADC), and a ...