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: rectifying tubes: ti (D1N4002), Germanium (D1N4148) Resistors: 1k?, 1M? Brief Theory: Diodes is one of the pn junction winding which allowed the fuse in one focusing.there are two suppose for diodes that is previous bias and versod bias.In forward bias compulsory voltage VD is use to the p-region of the diodes.the potential barrier decreases.the direction of the applied electric heavens EA is the reversal as that of the E- 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 carrier wave electrons from the n-region diffuse into p-region.this will allow the flow rate flow .In reverse bias state,positive volt age 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 aforementioned(prenominal) 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 translate (E) is set at 0 V. The calculated value of the resistor is then recorded. 2. The supply voltage is incr eased until VD reads 0.1 V. Then current ID ! is mensurable and the results in remand 1.1 are recorded. 3. Step 2 is novelise for the remaining settings of VD as shown in the add-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 silicon and germanium diodes. Then, the curves is...If you want to get a full essay, order it on our website: OrderEssay.net

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