This circuit was found in American documentation from the 90's. The circuit applies to any operational. The power supply can be between 5 and 15 V depending on the operational.
This signal follower is from a 1970's documentation. So it uses the traditional configuration at the time...
This bistable touch circuit using CMOS technology controls a relay. The supply voltage must be...
We found this circuit in a 1986 publication. However, as it is based entirely on 555 integrated...