Found in a 90’s HAM Radio, this circuit is used for an optical communications system or even audio transmission by optical fiber. The components are common.
This circuit is from a 1964 publication. The circuit takes advantage of the component's resistance...
The purpose of this circuit is to cut the peaks of a sinusoidal signal so that it is close to a...
This circuit, which can use a reed sensor, is indicated for doors and windows. The circuit was...