This circuit uses a diode as a radiation sensor. The operational ones are old because the publication is from the 80's, but modern low voltage equivalents can be tested.
This special effect circuit with LEDs using the 4017 was obtained in a 1982 publication. LEDs are...
This circuit was found in documentation from the 1980s. The control pulses are obtained by an...
This filter has a quality factor (Q) equal to 5 and uses the Texas Instruments TLC271 integrated...