This trigger uses two switching transistors that can still be found with some ease. The circuit is from an old documentation and its purpose is to speed up the switching of logic circuits.
We found this circuit in a 1974 technical documentation. The circuit can be made with BC549...
The operational amplifier of this configuration from the 70s is the 741 in its Motorola version from...
This circuit is used to test PNP or NPN transistors giving the status indication through LEDs. The...