This circuit implements two logic functions at the same time. The diodes are for general use and the resistors have typical values of 2k2 for logic of 5 V.
This circuit was found in an English magazine Radio & Electronics Constructor of February 1977....
I found this circuit in a Popular Electronics from 1992. The circuit shows how we can use two...
March 2017 - Texas Instruments LM5166 Synchronized Buck Converters are available at Mouser for 3V...