This circuit is from a 1964 Electronic Design. The transistors are from that time. They can be replaced by current equivalents.
We found this circuit in an American documentation from the 90s. Through an LED it indicates the...
August 2016 - It can be purchased from Mouser Electronics the new digital isolators ADuM120N and...
In this circuit, from a documentation from the 70's, we have the way to control the active cycle of...