This balance or balance circuit with phase inversion was found in documentation from the 90s. Transistors can be low noise equivalents like BC549.
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...