Experiment #4

Experiment #4

Diode and Zener diode

Mixing things up little now when we're asked to construct a circuit using firstly a 10v supply, a resistor (1k/ohm), a Diode (1N4007) and a Zener diode (5V1 400mW). Run in series taking readings of each component as follows:

Volt drop across:

 V1 (Zener diode) - 4.65v

 V2 (diode) - 0.66v

 V3 (diode & Zener diode) - 5.29v

 V4 (resistor) - 4.72v

Calculated current A: 10v/1000ohm = 10mA

Now taking readings with a voltage supply of 15v:

Volt drop across:

 V1 - 4.8v

 V2 - 0.68v

 V3 - 5.48v

 V4 - 9.5v

Calculated current A: 15v/1000ohm = 15mA

Given this information, we can see that the smallest difference in readings between the two tests is from the standard diode (just 0.02v difference). The highest difference is from the resistor (4.78v difference). The Zener stays almost the same (0.15v difference). Thus teaching that access voltage is consumed by the resistor.