This sequential circuit of LEDs was found in a Popular Electronics from the 90s. The circuit can be programmed and an adaptation consists of using optical couplers to drive power loads.
This circuit is suggested by a 1965 General Electric documentation. The triac must be in...
We found this circuit in 1980s documentation. It can be used independently as CW or by exciting a...
This 80's Motorola circuit can generate 100 MHz signals, but they can reach 200 MHz with the...