Diode Chracteristic

Experiment 1: rectifying tube characters Objective: * To study the indication of atomic number 14 and germanium diodes Apparatus / Equipment: Instruments: DC power depict procedure Generator Digital Multimeter (DMM) Comp hotshotnts: semiconductor diodes: ti (D1N4002), Germanium (D1N4148) Resistors: 1k?, 1M? Brief Theory: Diodes is one of the pn junction fraud which allowed the fuse in one perpetration.there are two secern for diodes that is previous bias and get upd bias.In forward bias plus voltage VD is use to the p-region of the diodes.the potential barrier decreases.the direction of the applied galvanic heavens EA is the reversal as that of the E- subject field in the space-charge region. The net result is that the electric scope in the space-charge region lower than the thermal equilibrium value. majority mailman electrons from the n-region diffuse into p-region.this will allow the flow rate flow .In reverse bias state,positive vo ltage is applied to the n-region of the pn junction. Applied voltage VR induces an applied electric field EA. Direction of the applied field is the resembling as that of the E-field in the space-charge region. Magnitude of the electric field in the space-charge region increases above the thermal equilibrium value. increase electric field holds back the holes in the p-region and the electrons in the n-region.

No current across the pn junction Procedure: Part A : Forward-bias Diode Characteristics. 1. The circuit of figure below is constructed with the summate (E) is set at 0 V. The calculated value of the resistor is then recorded. 2. The supply ! voltage is increased until VD reads 0.1 V. Then current ID is mensural and the results in remand 1.1 are recorded. 3. Step 2 is narrate for the remaining settings of VD as shown in the give in 1.1. 4. The te diode is replaced by a germanium diode and Table 1.2 is completed. 5. A graph paper is plotted which is ID versus VD for the ti and germanium diodes. Then, the curves is...If you want to get a full essay, golf-club it on our website: OrderCustomPaper.com

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