This is the receiver for the previous circuit we found in the December 1992 Radio Electronics magazine. The sensor is a photodiode that must have optical features such as lenses.
This traditional direct amplification MW radio configuration was obtained in an American...
This filter, which rejects frequencies around 1 kHz, was found in the August 1993 Electronics Now...
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...