Diode Chracteristic

Experiment 1: rectifying tube characters Objective: * To study the characteristic of atomic number 14 and germanium diodes Apparatus / Equipment: Instruments: DC power depict procedure Generator Digital Multimeter (DMM) Comp hotshotnts: rectifying valves: ti (D1N4002), Germanium (D1N4148) Resistors: 1k?, 1M? Brief Theory: Diodes is one of the pn junction craft which allowed the fuse in one prudence.there are two relegate for diodes that is previous bias and move aroundd bias.In forward bias overbearing voltage VD is apply to the p-region of the diodes.the potential barrier decreases.the direction of the applied electric automobile heavens EA is the reversal as that of the E- bailiwick 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 attack aircraft carrier electrons from the n-region diffuse into p-region.this will allow the ongoing flow . In reverse bias state,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 alike 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 over (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 mensurable and the results in remand 1.1 are recorded. 3. Step 2 is recur for the remaining settings of VD as shown in the carry over 1.1. 4. The te diode is replaced by a germanium diode and Table 1.2 is completed. 5. A gr aph paper is plotted which is ID versus VD f! or the silicon and germanium diodes. Then, the curves is...If you want to get a full essay, nine it on our website: OrderCustomPaper.com

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