This is an individual effort but members of a team can and should share insight, confirm results, and help problem solve. (Houghton The near-linear light output characteristic of an LED is exploited in small length fiber optic analog communication links, such as fiber optic closed-circuit TV. Select the diode … Experiment 1 V-I characteristics of diode charge carriers kept at distance by depletion (acts as a sort of insulation) layer as shown dotted in the above figure. ii) Junction Voltage vs. Current. References: • EE 121 Handouts • EE 151 and EE 153 text: Cunningham and Stuller, , 2nd Ed. When cathode is positive with respect to anode the , the diode said to be reverse biased. 2.0.THEORETICAL BACKGROUND Semiconductor diode theory is at the very center of much of today's electronics industry. The V-I characteristics or voltage-current characteristics of the p-n junction diode is shown in the below figure. The Complete diode model of a diode consists of the barrier potential, the small forward dynamic resistance and the ideal diode. Typical i-v characteristic for a semiconductor diode Experimental Procedure Your main task is to determine the i-v characteristic of a 1N4004 silicon diode using a test procedure of your own design. Experiment 8 . Square wave modulation through PIN diode. Working principle: When voltage is not applied across the diode, depletion region forms as shown in the above figure. P-N JUNCTION DIODES 1.0.OBJECTIVE The objective of this experiment is to measure the I-V curve for P-N Junction Diode and to understand the characteristics of P-N Junction. Output Power and frequency as a function of voltage. This causes electrons from n-region to get attracted to positive terminal of the battery and holes by the negative terminal. Experiment No 1: I/V characteristics PN junction diode Reverse biasing a PN junction When the polarity of the battery is reversed, the cathode is connected to positive end of the battery and anode to negative. Simulator Procedure (as performed through the Online Labs) Select the characteristics of diode from the drop down list. You should gather enough data in order to produce a curve like the one shown in Figure 2. Plot a graph with reverse voltage along X axis and reverse current along Y axis. Chapter 6. Purpose: The objective of this experiment is to become familiar with the properties and uses of diodes. The junction voltage vs. current characteristic of an LED is similar to the V-I characteristics of diodes. The graph shows the reverse V-I characteristics of the given p-n junction diode. V-I characteristics of p-n junction diode. Objectives: • Obtain the I-V curves of a signal diode and a zener diode • Compare the performance of different rectifier circuits . PN Junction Diode : I-V Characteristics üThe barrier increase reduces the majority carrier diffusion to a negligible level üThe p-side electrons and n-side holes can wander into the depletion region and be swept to the other side à reverse I(nàp) üReverse bias situation àan increase of the potential hill üBeing associated with Objectives: To be able to describe an experiment to obtain the I–V characteristics of a filament lamp and light-emitting diode (LED); To be able to describe the uses and benefits of using light-emitting diodes (LEDs). current-voltage (I-V) characteristics of diodes and the use of diodes in rectifier and limiter circuits. I-V characteristics I-V characteristics were introduced in the previous page when introducing Ohm’s law. The horizontal line in the below figure represents the amount of voltage applied across the p-n junction diode whereas the vertical line represents the amount of current flows in the p-n junction diode. 3. Diodes . 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