This high-speed circuit was found in 1980s Linear Technology documentation. The circuit makes use of components of the time with TTL output and TTL input that enable their use as a shield.
This circuit was found in a Popular Electronics of the 90s. The resistor R4 determines the load...
This transmitter emits signals in the FM range, reaching a few meters away. The modulation...
This 80's circuit uses germanium transistors like the AC125, AC151, AC163, 2N506 and others to...