This circuit is from a Mallory 1968’s documentation. The integrated circuit is of the time and the transistor admits equivalents.
This circuit was found in a Popular Electronics from the 90s. It uses a LASCR which is a photo-SCR...
This VCO works in the opposite way to the previous circuit, converting continuous voltages into...
This circuit, suggested by an Electronics World of 1969, keeps a blinking LED for a while when a...