This circuit was found in an Electronic Design from the 90s. The shapes of the signals obtained as result of the inputs are shown next to the diagram.
Found in a 90s 73 magazine, this circuit uses an unusual component today which is the XR2206. |...
This random noise or white noise generator was published in Radio Electronics magazine in July...
This circuit was found in Philips documentation from 1967. The phototransistor is from that time,...