- Although oscillations can be produced by mechanical devices (e.g. alternators), but electronic oscillators have the following advantages:
(i) An oscillator is a non-rotating device. Consequently, there is little wear and tear and hence longer life.
(ii) Due to the absence of moving parts, the operation of an oscillator is quite silent.
(iii) An oscillator can produce waves from small (20 Hz) to extremely high frequencies (> 100 MHz).
(iv) The frequency of oscillations can be easily changed when desired.
(v) It has good frequency stability i.e. frequency once set remains constant for a considerable period of time.
(vi) It has very high efficiency.
Wilfykil answered the question on August 15, 2019 at 08:57
- What is a Sinusoidal Oscillator?(Solved)
What is a Sinusoidal Oscillator?
Date posted: August 15, 2019. Answers (1)
- Define the term Phase Reversal(Solved)
Define the term Phase Reversal
Date posted: August 15, 2019. Answers (1)
- Select a suitable value for the emitter bypass capacitor in Fig. 5.4 if the amplifier is to operate over a frequency range from 2 kHz...(Solved)
Select a suitable value for the emitter bypass capacitor in Fig. 5.4 if the amplifier is to operate over a frequency range from 2 kHz to 10 kHz.
Date posted: August 15, 2019. Answers (1)
- What is the role of emitter bypass capacitor CE in CE amplifier circuit shown in Fig. 5.3 ? Illustrate with a numerical example.(Solved)
What is the role of emitter bypass capacitor CE in CE amplifier circuit shown in Fig. 5.3 ? Illustrate with a numerical example.
Date posted: August 15, 2019. Answers (1)
- Show and explain a Practical Circuit of Transistor Amplifier(Solved)
Show and explain a Practical Circuit of Transistor Amplifier
Date posted: August 15, 2019. Answers (1)
- Define Single Stage Transistor Amplifier and explain how it works(Solved)
Define Single Stage Transistor Amplifier and explain how it works
Date posted: August 15, 2019. Answers (1)
- For a single stage transistor amplifier, the collector load is RC = 2 kilo-ohms and the input resistance Ri = 1 kilo-ohm. If the current...(Solved)
For a single stage transistor amplifier, the collector load is RC = 2 kilo-ohms and the input resistance Ri = 1 kilo-ohm. If the current gain is 50, calculate the voltage gain of the amplifier.
Date posted: August 15, 2019. Answers (1)
- If the collector current changes from 2 mA to 3mA in a transistor when collector- emitter voltage is increased from 2V to 10V, what is...(Solved)
If the collector current changes from 2 mA to 3mA in a transistor when collector- emitter voltage is increased from 2V to 10V, what is the output resistance?
Date posted: August 15, 2019. Answers (1)
- A change of 200 mV in base-emitter voltage causes a change of 100 µA in the base current. Find the input resistance of the transistor.(Solved)
A change of 200 mV in base-emitter voltage causes a change of 100 μA in the base current. Find the input resistance of the transistor.
Date posted: August 15, 2019. Answers (1)
- What does the performance of a transistor amplifier depend upon?(Solved)
What does the performance of a transistor amplifier depend upon?
Date posted: August 15, 2019. Answers (1)
- What is the Output from Transistor Amplifier?(Solved)
What is the Output from Transistor Amplifier?
Date posted: August 15, 2019. Answers (1)
- Determine the Q point of the transistor circuit shown in Fig. 4.40. Also draw the d.c. load line. Given ß = 200 and VBE =...(Solved)
Determine the Q point of the transistor circuit shown in Fig. 4.40. Also draw the d.c. load line. Given β = 200 and VBE = 0.7V.
Date posted: August 15, 2019. Answers (1)
- In the circuit diagram shown in Fig. 4.39 (i), if VCC = 12V and RC = 6 kilo-ohms, draw the d.c. load line.(Solved)
In the circuit diagram shown in Fig. 4.39 (i), if VCC = 12V and RC = 6 kilo-ohms, draw the d.c. load line. What will be the Q point if zero signal base current is 20μA and β = 50?
Date posted: August 15, 2019. Answers (1)
- For the circuit shown in Fig. 4.38 (i), draw the d.c. load line.(Solved)
For the circuit shown in Fig. 4.38 (i), draw the d.c. load line.
Date posted: August 15, 2019. Answers (1)
- Explain Transistor Load Line Analysis(Solved)
Explain Transistor Load Line Analysis
Date posted: August 15, 2019. Answers (1)
- Explain Transistor as an Amplifier in CE Arrangement(Solved)
Explain Transistor as an Amplifier in CE Arrangement
Date posted: August 15, 2019. Answers (1)
- Which are the Commonly Used Transistor Connection?(Solved)
Which are the Commonly Used Transistor Connection?
Date posted: August 15, 2019. Answers (1)
- Show the Comparison of Transistor Connections(Solved)
Show the Comparison of Transistor Connections
Date posted: August 15, 2019. Answers (1)
- Fig. 4.28 shows the short circuit failures in a transistor. What will be the circuit behaviour in each case ?(Solved)
Fig. 4.28 shows the short circuit failures in a transistor. What will be the circuit behaviour in each case ?
Date posted: August 14, 2019. Answers (1)
- Fig. 4.27 shows the open circuit failures in a transistor. What will be the circuit behaviour in each case ?(Solved)
Fig. 4.27 shows the open circuit failures in a transistor. What will be the circuit behaviour in each case ?
Date posted: August 14, 2019. Answers (1)