This circuit can function as an output shield for microcontrollers, being compatible with TTL logic. The frequency is adjusted in the trimpot. TTL power is 5 V.
This circuit is from an American cookbook from 1977. The circuit generates a voltage of...
In the figure we have the simple way to implement the NO-OR or NOR function with common diodes and a...
We found this configuration in an integrated circuits manual. The transistor, which can be of any...