Diode Chracteristic

Experiment 1: rectifying tube characters Objective: * To study the singularity 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 widget which allowed the fuse in one bursting charge.there are two declare for diodes that is previous bias and turnroundd bias.In forward bias supreme voltage VD is utilize to the p-region of the diodes.the potential barrier decreases.the direction of the applied voltaic heavens EA is the reversal as that of the E- discipline 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 crew cut electrons from the n-region diffuse into p-region.this will allow the veritable flow .In reverse bias sta te,positive voltage 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 corresponding 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 fork up (E) is set at 0 V. The calcula ted value of the resistor is then recorded. ! 2. The supply voltage is increased until VD reads 0.1 V. Then current ID is calculated and the results in remand 1.1 are recorded. 3. Step 2 is fictionalise for the remaining settings of VD as shown in the set back 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 silicon and germanium diodes. Then, the curves is...If you want to get a full essay, nightclub it on our website: OrderCustomPaper.com

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