Experiment 3

This experement was done using a multi meter, bread board ,2x resistors a 5v1 zener diode and a 12v power supply.

The resistors both have a value of 100 ohms
and Vs is 12v given the Vz over the zener diode to be 4.96v.
We then had to vary the power supply form 10v - 15v monitoring the value of Vz this was recorded at 4.84v at 10v Vs and climbed to 5.02v at 15v Vs..this would be expected as the zener diodes value is 5v if the reading was for example 7v over the zener this would indicate a short or open circut.
This cicuit could be used to regulate voltage.

If i was to reverse the polarity of the zener diode the value of Vz would be around .6 to .7 as this is the voltage required for the zener to start operating.