Explain five (5) applications of the hall effects With the aid of a diagram, explain how a P-N Junction is form. State five (5) application of PN Junction, and explain the property of the PN junction that make those application possible. Explain what carrier mobility is and elaborate on the factors that influence carrier mobility. a. A 80 V rms is stepped down to 18V rms by a transformer. The output from the transformer is rectified using a half wave rectifier circuit and connected to a 47.5 2 load resistor. Draw a circuit diagram of this arrangement and the waveform at each stage. b. Calculate the following about the circuit in Figure 2.1 (If silicon diodes are employed in the rectification); the peak value of the output voltage considering the drop across each diode, Vpk. the average voltage, Vde. The current through the load resistor, IL. The current diode, Ia. The frequency of the output signal, Fout. Calculate the efficiency of the full wave rectifier expressed in percentage. ii. iii. iv. V. vi. vii. Sketch a graph of the input and output voltage against time. If a 480 µF capacitor is added to the output in Figure 2.1, calculate the following: C. i. Vipple ii. Average voltage, Vac- iii. Sketch a graph of the input and output voltage against time of the capacitor. (Built-in-potential of silicon = 0.7V)
Explain five (5) applications of the hall effects With the aid of a diagram, explain how a P-N Junction is form. State five (5) application of PN Junction, and explain the property of the PN junction that make those application possible. Explain what carrier mobility is and elaborate on the factors that influence carrier mobility. a. A 80 V rms is stepped down to 18V rms by a transformer. The output from the transformer is rectified using a half wave rectifier circuit and connected to a 47.5 2 load resistor. Draw a circuit diagram of this arrangement and the waveform at each stage. b. Calculate the following about the circuit in Figure 2.1 (If silicon diodes are employed in the rectification); the peak value of the output voltage considering the drop across each diode, Vpk. the average voltage, Vde. The current through the load resistor, IL. The current diode, Ia. The frequency of the output signal, Fout. Calculate the efficiency of the full wave rectifier expressed in percentage. ii. iii. iv. V. vi. vii. Sketch a graph of the input and output voltage against time. If a 480 µF capacitor is added to the output in Figure 2.1, calculate the following: C. i. Vipple ii. Average voltage, Vac- iii. Sketch a graph of the input and output voltage against time of the capacitor. (Built-in-potential of silicon = 0.7V)
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Transcribed Image Text:Explain five (5) applications of the hall effects
With the aid of a diagram, explain how a P-N Junction is form.
State five (5) application of PN Junction, and explain the property of the PN junction that make
those application possible.
Explain what carrier mobility is and elaborate on the factors that influence carrier mobility.
a.
A 80 V rms is stepped down to 18V rms by a transformer. The output from the transformer is
rectified using a half wave rectifier circuit and connected to a 47.5 2 load resistor.
Draw a circuit diagram of this arrangement and the waveform at each stage.
b.
Calculate the following about the circuit in Figure 2.1 (If silicon diodes are employed in the
rectification);
the peak value of the output voltage considering the drop across each diode, Vpk.
the average voltage, Vde.
The current through the load resistor, IL.
The current diode, Ia.
The frequency of the output signal, Fout.
Calculate the efficiency of the full wave rectifier expressed in percentage.
ii.
iii.
iv.
V.
vi.
vii.
Sketch a graph of the input and output voltage against time.
If a 480 µF capacitor is added to the output in Figure 2.1, calculate the following:
C.
i.
Vipple
ii.
Average voltage, Vac-
iii.
Sketch a graph of the input and output voltage against time of the capacitor.
(Built-in-potential of silicon = 0.7V)
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