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- Find the a rating of the transistor shown in Fig. 4.20. Hence determine the value of IC using both a and ß rating of the...(Solved)
Find the α rating of the transistor shown in Fig. 4.20. Hence determine the value of IC using both α and β rating of the transistor.
Date posted: August 14, 2019. Answers (1)
- Calculate IE in a transistor for which ß = 50 and IB = 20 µA.(Solved)
Calculate IE in a transistor for which β = 50 and IB = 20 μA.
Date posted: August 14, 2019. Answers (1)
- Find the value of ß if;
(i) a = 0.9
(ii) a = 0.98
(iii) a = 0.99.(Solved)
Find the value of β if;
(i) α = 0.9
(ii) α = 0.98
(iii) α = 0.99.
Date posted: August 14, 2019. Answers (1)
- Explain the Common Emitter Connection in transistors(Solved)
Explain the Common Emitter Connection in transistors
Date posted: August 14, 2019. Answers (1)
- List the Transistor Connections or configurations(Solved)
List the Transistor Connections or configurations
Date posted: August 14, 2019. Answers (1)
- A common base transistor amplifier has an input resistance of 20 ohms and output resistance of 100 kilo-ohms.(Solved)
A common base transistor amplifier has an input resistance of 20 ohms and output resistance of 100 kilo-ohms. The collector load is 1 kilo-ohm. If a signal of 500 mV is applied between emitter and base, find the voltage amplification. Assume aac to be nearly one
Date posted: August 14, 2019. Answers (1)
- Explain how Transistor Circuit is used as an Amplifier(Solved)
Explain how Transistor Circuit is used as an Amplifier
Date posted: August 14, 2019. Answers (1)
- Show in form of diagrams the Transistor Symbols(Solved)
Show in form of diagrams the Transistor Symbols
Date posted: August 14, 2019. Answers (1)
- What is the Importance of transistor action?(Solved)
What is the Importance of transistor action?
Date posted: August 14, 2019. Answers (1)
- Discuss on Transistor Action(Solved)
Discuss on Transistor Action
Date posted: August 14, 2019. Answers (1)
- Which are the Facts about the Transistor?(Solved)
Which are the Facts about the Transistor?
Date posted: August 14, 2019. Answers (1)
- Explain the Naming of Transistor Terminals(Solved)
Explain the Naming of Transistor Terminals
Date posted: August 14, 2019. Answers (1)
- Over what range of input voltage will the Zener circuit shown in Fig. 3.68 maintain 30 V across 2000 O load, assuming that series resistance...(Solved)
Over what range of input voltage will the Zener circuit shown in Fig. 3.68 maintain 30 V across 2000 Ω load, assuming that series resistance R = 200 Ω and Zener current rating is 25 mA ?
Date posted: August 14, 2019. Answers (1)
- What value of series resistance is required when three 10-watt, 10-volt, 1000 mA Zener diodes are connected in series to obtain a 30-volt regulated output...(Solved)
What value of series resistance is required when three 10-watt, 10-volt, 1000 mA Zener diodes are connected in series to obtain a 30-volt regulated output from a 45 volt d.c. power source ?
Date posted: August 14, 2019. Answers (1)
- The circuit of Fig. 3.66 uses two Zener diodes, each rated at 15 V, 200 mA.(Solved)
The circuit of Fig. 3.66 uses two Zener diodes, each rated at 15 V, 200 mA. If the circuit is connected to a 45-volt unregulated supply, determine:
(i) The regulated output voltage
(ii) The value of series resistance R
Date posted: August 14, 2019. Answers (1)
- A 10-V Zener diode is used to regulate the voltage across a variable load resistor [See fig. 3.65].(Solved)
A 10-V Zener diode is used to regulate the voltage across a variable load resistor [See fig. 3.65]. The input voltage varies between 13 V and 16 V and the load current varies between 10 mA and 85 mA. The minimum Zener current is 15 mA. Calculate the value of series resistance R.
Date posted: August 14, 2019. Answers (1)
- The Zener diode shown in Fig. 3.64 has VZ = 18 V.(Solved)
The Zener diode shown in Fig. 3.64 has VZ = 18 V. The voltage across the load stays at 18 V as long as IZ is maintained between 200 mA and 2 A. Find the value of series resistance R so that E0 remains 18 V while input voltage Ei is free to vary between 22 V to 28V.
Date posted: August 14, 2019. Answers (1)
- A 7.2 V Zener is used in the circuit shown in Fig. 3.63 and the load current is to vary from 12 to 100 mA.(Solved)
A 7.2 V Zener is used in the circuit shown in Fig. 3.63 and the load current is to vary from 12 to 100 mA. Find the value of series resistance R to maintain a voltage of 7.2 V across the load. The input voltage is constant at 12V and the minimum Zener current is 10 mA.
Date posted: August 14, 2019. Answers (1)
- For the circuit shown in Fig. 3.62 (i), find the maximum and minimum values of Zener diode current.(Solved)
For the circuit shown in Fig. 3.62 (i), find the maximum and minimum values of Zener diode current.
Date posted: August 14, 2019. Answers (1)
- For the circuit shown in Fig. 3.61 (i), find:(Solved)
For the circuit shown in Fig. 3.61 (i), find:
(i) the output voltage
(ii) the voltage drop across series resistance
(iii) the current through Zener diode.
Date posted: August 14, 2019. Answers (1)