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: rectifying valves: ti (D1N4002), Germanium (D1N4148) Resistors: 1k?, 1M? Brief Theory: Diodes is one of the pn junction whatchamacallit which allowed the fuse in one tutelage.there are two defer for diodes that is previous bias and abstractd bias.In forward bias lordly voltage VD is utilise 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- chastening 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 immune carrier electrons from the n-region diffuse into p-region.this will allow the legitimate flow .In reverse bias s tate,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 said(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 add together (E) is set at 0 V. Th e calculated value of the resistor is then ! recorded. 2. The supply voltage is increased until VD reads 0.1 V. Then current ID is measurable and the results in remand 1.1 are recorded. 3. Step 2 is restate for the remaining settings of VD as shown in the send 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 te and germanium diodes. Then, the curves is...If you want to get a full essay, cardinal it on our website: OrderCustomPaper.com

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