This circuit was obtained in a 1964 Electronic Design. The components used are from that time. Observe the high voltage used in the supply.
We found this circuit in an old Mullard (Philips) documentation on the 555 and 556 integrated circuit...
This circuit was obtained from an Electronic Design of 1968. The circuit uses components of the...
This circuit was found in a 70s National Semiconductor manual. It has a different output way for...