Two-tube regenerative receiver (T1595E)

This circuit is from a Radio Electronics from 1949. The circuit is battery powered and has high impedance listening.

Two Current Boosters for Stepper Motor Controls (CB11598E)
The two power steps below are intended for use with the SAA1027 stepper motor control but can be...
ICS 52000 Low Noise Microphone with Digital TDM Output
August 2017 - Mouser Electronics is announcing the availability of TDK ICS-52000 microphones with...
Warning notice (CB7977E)
What this interesting circuit does is to warn that a note written on a paper has been removed and...