This circuit provides a logic output signal when the voltage exceeds a certain value. The circuit is from the 1994 Linear Applications Handbook by National Semiconductor.
This simulated circuit on the NI Multisim transmits modulated infrared signals with the audio...
This circuit was found in an Elektor from the 90s. The circuit uses common components even today,...
This circuit was obtained in a Radio Electronics of the 90s. The circuit uses an integrated circuit...