Experiment 4:
10 Volts 15 Volts
Volt drop V1: 5.1 V 5.1 V
Volt drop V2: 0.7 V 0.7 V
Volt drop V3: 5.8 V 5.8 V
Volt drop V4: 4.2 V 9.2 V
Calculated current A: 0.0042 A 0.0092 A
Describe what is happening and why you are getting these reading?
The diode we using is a 5.1V zener so even when the Voltage supply has been cranked up it still reads around 5.1 V as this is the rating of the zener diode and the only voltage drop that changes is the V4 because there is only so much can go thru the zener so the resistor will have to take the rest of the load .
The diode we using is a 5.1V zener so even when the Voltage supply has been cranked up it still reads around 5.1 V as this is the rating of the zener diode and the only voltage drop that changes is the V4 because there is only so much can go thru the zener so the resistor will have to take the rest of the load .
Experiment 3:
For R = 100 Ohms and RL = 100 Ohms, Vs = 12V
What is the value of Vz?
4.95V
Vary Vs from 10V to 15V
What is the value of Vz?
10V = 4.85V 15V = 5.02V
Explain what is happening here
It doesn’t exceed 5V which is the value of the Zener diode.
What could this circuit be used for?
Voltage Regulator.
Reverse the polarity of the Zener Diode.
What is the value of Vz? Make a short comment why you had that reading.
0.75V It take 0.6 – 0.7 to get the diode working. So this is the voltage drop of the diode and the rest of the available voltage is used by resistor.
