This circuit was found in the December 1982 Radio Electronics magazine. The components are of types that are still commonly found. The power supply is not included.
The commercial MT2B receiver manufactured in Japan in the 1960s had a listening device only and...
This is one of the many integrated integrator circuits that the reader can find on the website. The...
This first order Butterworth filter is tuned to frequencies around 1 kHz. The frequency is given...