This circuit is suggested by American documentation from 1970. It makes use of transistors of the time but can be implemented with modern equivalent transistors.
We find this circuit in a 1970 publication. Transistors can be replaced by current equivalents and LDR is...
This stage was used in old audio ampliiers and radios from the 1950s and 1960s. It uses one of the...
January 2017 - Texas Instruments' new TPS54200 integrated circuit for excitation of LEDs with a...