For the circuit analysis part in experiment 2, what's the maximum load current for the circuit?
UCSD, ECE65, Winter 2013
Lab 2: Diode iv Characteristics, Zener Diode Experiment 1: General Purpose diode iv Characteristics
One way to measure the iv characteristics of an element is to apply a know voltage to the element and measure its current. By repeating these measurements at different voltages we arrive at the iv characteristics. This experiment shows how we can measure/plot the iv characteristics of an element (a 1N4148 diode in this case) on the scope. It uses the (x vs y) capability of the scope which plots v1 versus v2 where v1 and v2 are voltages on scope channels 1 and 2, respectively.
Because scope only measures voltages, we need to “convert” the diode current into a voltage that the scope can measure by adding a resistor R in series with the diode as is seen in Fig. 1 below (iD = iR = vR/R). Furthermore, in order to “see” the plot on the scope, the plot should be refreshed continuously (i.e., we need to use a periodic input voltage).
Attachment:- lab2 (1).pdf