The purpose of the strobe circuit in this sensor amplifier is to reduce consumption. The circuit is from old documentation (1970s), but the idea can be used in modern applications.
This simulation shows how a transistor can be used as a switch turning on and off in the LED. The...
This circuit was obtained in an English publication of 1975. It is a circuit that stabilizes an...
This is a common circuit in the 1990s, when experimental FM transmitters were in vogue. The...