[Debraj] needed a simple signal generator for a project he was working on, but didn’t have one handy. He found that the easiest and cheapest way to get clean, reliable signaling was by using something ...

A delta wave, also known as delta rhythm, is the normal brainwave in the encephalogram of a person in deep, dreamless sleep, occurring with high voltage and low frequency (1 to 4 Hz). If you plan to ...

This two-transistor white noise generator has a surprising feature – about 30dB more noise than the more traditional designs. Q1 and Q2 can be any small-signal transistors with a beta of up to 400.

If you enter the physical world and open a door—say, to walk into a store—you will intuitively hold the door open if someone is walking behind you and you see them or hear them. Even if you aren’t ...

The Simple Sharing Buttons Generator is a little innovation for a problem you might not even have known your site had. The Simple Sharing Button Generator by Stefan Bohacek. As often as that is the ...

White noise generators commonly are used for testing purposes such as setting the noise level in bit error rate (BER) measurements, providing broadband signals for ...

Commercial curve tracers have existed for decades. But designers without access to one can create a simple circuit that uses a function generator and oscilloscope to generate JFET transfer and ...