When you’re designing and testing circuits and equipment, where do you get those input signals? You could build your own signal source for a specific application, but that isn’t necessary.

Using a single op amp and a properly selected resistor, this white-noise generator provides flat output versus frequency and speeds testing of circuit performance.

Signal generators play a crucial role in the development and testing of various components and devices, spanning consumer electronics, wireless networks and radar systems.

A PC’s serial port provides signal lines that you can use to expand the number of input signals. With some additional circuitry tied to these lines, you can use the port to test digital TTL ...