Zener Diode Adjustable Equivalent Circuit

@lmccoig

11 years ago

https://everycircuit.com/circuit/5130641873043456

Need a voltage that is not zener diode off the shelf range? Battery voltage goes through 10k ohm load resistor on bottom circuit and output voltage is adjusted with variable resistor. PNP transistor is 2N2907. NPN transistors is 2N2222.