Found in an old Radio Electronics, this circuit uses common components today. The resistors of the IC output determine the stair steps.
This circuit uses a sensitive 9V relay but can be built with 6 or 12V relays by changing the power...
This ultra-simple adjustable power source is of great use on the bench of any electronics...
This high-power flasher for incandescent signaling lamps was found in a 1980s General Electric...