Found in a documentation from the 90s, this circuit limits and amplifies a voice signal in the 800 to 3000 Hz range and is intended for transmission systems.
Found in Motorola's 1965 manual, this full-wave dimmer controls a load that depends on the used...
Found in American documentation from the 90s, this circuit uses components that are still common...
This relaxation oscillator with solid-state triggering element was found in an old European...