This circuit can be implemented with common components operating with low-intensity signals. The circuit was found in the April 1987 issue of Radio Electronics magazine.
This circuit is from an April 1991 Radio Electronics magazine. The circuit uses power MOSFETs and...
In the figure we have a receiver for frequency modulated light signals (see the transmitter in...
This 4-transistor amplifier was found in a Japanese publication from 1957. Germanium transistors are...