Experiment no.3 ( 5.1 zener diode )

Components : 2x resistors,1x 5.1 400mW zener diode (Zd)


Vz = zener voltage
Vs = voltage supply

The value of Vz : 5volts
Vs now varys from 10 -15 v
What is Vz now: 5volts


NOTE:

Component voltage dos'nt change as this voltage amount is to operate the component, Zener diode has a reverse bias of 5.1 v and a forward bias 0.7v

Changing the supply voltage wont change a diodes voltage, only changing the diodes forward or reverse bias wil change its voltage drop.


Zener diodes are good for circuits containing different voltage components.


Reversing the polarity of the zener diode:
0.846 was measured in this reversed polarity giving a forward bias, which should read between 0.6-0.7, the reading 0.8 would mean there was a leak in the diode exceding its forward bias voltage.