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 circuit was found in the November 1992 Radio Electronics magazine. The resistor in series with...
This receiver we found in a 1992 documentation operates in the 27 MHz band, triggering a relay...
This sensitive AM radio doesn’t need external antenna, picking easily local stations. The output...