This narrowband data receiver is from the Philips Databook of 1990. The circuit is powered by 5 V and N1 has 3.21 turns, N2 1 turns with Q = 16.
An interesting solution that can be provided in some cases is the one shown in the figure in which...
This circuit was found in a 1987 publication, but it is still valid today. What is done is to...
This circuit emits a signal in the AM range, whose modulation frequency depends on the intensity of the...