This circuit was found in a 90s Electronic Design. The circuit is for TTL technology and can function as a shield for microcontrollers.
This amplifier with very high input impedance was suggested by Texas Instruments in a manual of...
This circuit is from a documentation from the 70s. The circuit uses logic gates of the time, which...
This 80's circuit uses a germanium transistor like the AC121. The circuit has an output...