zener diode with PNP regulator mod for battery charger | Page 2 | Boat Design Net
Zener Diode at Base of Transistor - Electrical Engineering Stack Exchange
Transistor-Zener Diode Regulator Circuits
PNP with zener diodes circuit - Electrical Engineering Stack Exchange
NPN Transistor, PNP Transistor, Classification, Construction of Bipolar Junction Transistor, Action, Modes of Operation and FAQs.
Zener Diodes Kit, 1W Axial Leads Through Hole Power Diode Assorted Assortment Box Kit Set (3.3V/3.6V/3.9V/4.3V/4.7V/5.1V/5.6V/6.2V/6.8V/7.5V), Range 1N4728~1N4737,Pack of 200, By Ltvystore: Amazon.com: Industrial & Scientific
Power Supply Filter detection using Zener diode and PNP Transistor - Electrical Engineering Stack Exchange