Obtained from a 1969 documentation, this circuit can operate at frequencies up to 500 Hz, counting up to 999. The circuit makes use of neon lamps of the time.
This circuit has been found in an old documentation and therefore uses a lamp as an indicator. In a...
This monostable circuit uses one of the two flip-flops available on the CMOS 4098 integrated...
This project came out in an article of mine (Newton C. Braga) in the Popular Electronics magazine of...