This blinker for LEDs up to 500 mA was found in General Electric documentation from 1970. Transistors can be replaced with current equivalent types.
The sensors in this circuit are photodiodes with filters. The circuit is suggested by the National...
This circuit was found in a Maxim documentation from the 90s. It is valid for the lower income types...
This configuration has already been given in several articles and circuits on this website and...