Introduction
The measurement of electrical properties of linear or nonlinear components by V-I method is an important lab topic in college physics training. This experimental apparatus can help students to understand the principles of current-limiting or voltage-dividing of resistances in serial or parallel connections, and understand the electrical characteristics of different components, while master the method for measuring V-I characteristics of regular diode, Zener diode, light-emitting diode and ordinary tungsten bulb.
LEEI-52 apparatus consists of a 5 VDC regulated power supply, a digital voltage meter, a digital current meter, variable resistors, a regular diode, a Zener diode, a light-emitting diode, a tungsten bulb and so on. The following objectives can be achieved:
1. Master the method and the basic circuit of measuring V-I characteristics of nonlinear components.
2. Master the basic characteristics of diodes, Zener diodes and light-emitting diodes. Accurately measure their forward threshold voltages.
3. Plot the graphs of V-I characteristic curves of the above three nonlinear components.
The instruction manual contains experimental configurations, principles and step-by-step instructions. Please click Experiment Theory and Contents to find more information about this apparatus.
Specifications
| Description | Specifications |
| Voltage source | +5 VDC, 0.5 A |
| Digital voltmeter | 0 ~ 1.999 V, resolution, 0.001V; 0 ~ 19.99 V, resolution 0.01 V |
| Digital ammeter | 0 ~ 200 mA, resolution 0.01 mA |
| Power consumption | < 10 W |
Part List
| Description | Qty |
| Main electric suitcase unit | 1 |
| Connection wire | 10 |
| Power cord | 1 |
| Experimental instruction manual | 1 |
