Voltage regulator 9V to 3.6V Series Emitter Follower

Voltage regulator for 9v to 3.6V, Zener and NPN transitor. Ref: Book: Analog and Digital Electronics .2nd Edition by Peter H. Beards.
Breadboard and schematic of for a simple Voltage regulator for 9v to 3.6V.
Just 4 components needed.
If you have a 3V Zener try a 102 ohm resistor for base-collector.
Has Schematic and Breadboard layouts . ideal for experimentation.
Ref: Book: Analog and Digital Electronics .2nd Edition by Peter H. Beards.