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.

Posted in classic hacks, Repair Hacks Tagged signal generator, test equipment, vintage equipment ...

Any short-circuit conditions which might possibly occur in practice can be produced in their testing room. The generators are driven by 5,500 volt motors connected with the public supply mains.

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 ...

Most gigahertz signal generators are bulky and expensive. Electronic circuits made from Josephson junctions could be mere millimeters long and integrate easily into electronic chips.

This all-analog circuit provides three key waveforms simultaneously and at the same frequency within the audio band. It is useful for evaluating audio systems, transformers, cables ...