Home
Class 12
PHYSICS
In common emitter transistor as shown in...

In common emitter transistor as shown in Fig., the `V_(BB)` supply can be varied from 0 V to 5.0V. The Si. Transistor has `beta_(ac)=250` and `R_(B)=100kOmega, R_(c)=1k Omega,V_(C C)=5.0V`. Assume that when the transistor is saturated, `V_(CE)=0V` and `V_(BE)=0.8V`. Calculate the minimum base current, for which the transistor will reach saturation. Hence, determine `V_(i)` when the transistor is 'switched on' find ranges of `V_(i)` for which the transistor is switched off and switched on.

Text Solution

Verified by Experts

(a)`20 mu A`
(b)2.8 V
(c )Switched off between 0 V and 0.6 V
Switched on between 2.8 V and 5 V
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section -A (Objective Type question (One option is correct))|50 Videos

  • SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section -B (Objective type question (one option is correct))|29 Videos

  • SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-D (Assertion and reason))|5 Videos

  • SEMICONDUCTOR ELECTRONICS (MATERIAL, DEVICES AND SIMPLE CIRUITS )

    AAKASH INSTITUTE ENGLISH|Exercise Assignment SECTION - D (Assertion & reason type Question)|10 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    AAKASH INSTITUTE ENGLISH|Exercise Try Yourself|63 Videos

Similar Questions

Explore conceptually related problems

In a common emitter transistor circuit, the base current is 40 muA , then V_(BE) is

In the figure, given that V_(BB) supply can vary from 0 to 5.0V,V_(CC)=5V,beta_(dc)=200,R_(B)=100KOmega,R_(C)=1KOmega and V_(BE)=1.0V , The minimum base current and the input voltage at which the transistor will go to saturation, will be, respectively:

A common emitted amplifier circuit, built using an npn transistor, is shown in the figure. Its dc current gain is 250,R_(C)=1Komega and V_(C C)=10V . What is the minimum base current for V_(CE) to reach saturation?

A common emitted amplifier circuit, built using an npn transistor, is shown in the figure. Its dc current gain is 250,R_(C)=1Komega and V_(C C)=10V . What is the minimum base current for V_(CE) to reach saturation?

V_("BB") can vary between 0 and 5 V. Find the minimum value of base current and V_("BB") , so that transistor works in saturation mode. ["Given "beta =200 and V_("BE")=1V]

In the figure shown R_B = 500K Omega, R_C = 8K Omega, V_BB= 10.6 V and V_(C C) = 20V . The current amplification factor of the transistor is 100 and V_BE = 0.6 volt then which of the following is false?

In the figure shown , R_B=500kOmega, R_C = 8 kOmega, V_("BB")=10.6V and V_("CC") = 20V . The current amplification factor beta=100 and V_("BE")=0.6 V . Mark the incorrect statement .

Draw the tramsfer characteristic curve of a base biased transistor in CE configuration. Explain clearly how the active region of the V_o" versus " V_i curve in a transistor is used as an amplifier.

For the transistor circuit shown in figure , evaluate V_E , R_B and R_E . Given I_C = 1 mA , V_(CE) = 3V , V_(BE) = 0.5 V , V_(CC )= 12 V and beta = 100

Find the current in 10Omega resistcance, V_(1) and source voltage V_(s) in the circuit shown in figure (V_(S)=V_(A)-V_(B))

AAKASH INSTITUTE ENGLISH-SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS-Try yourself
  1. In semiconductors at a room temperature

    Text Solution

    |

  2. Carbon, silicon and germanium have four valence electrons each. These ...

    Text Solution

    |

  3. In a pure semiconductor the number of conduction electrons is 6xx10^(1...

    Text Solution

    |

  4. C, Si and Ge have same lattice structure. Why is C insulator while Si ...

    Text Solution

    |

  5. A semiconductor is known to have an electron concentration of 6xx10^(1...

    Text Solution

    |

  6. Suppose a pure Si crystal has 5 × 10^(28) atoms m^(–3). It is doped by...

    Text Solution

    |

  7. What is the current through an ideal p-n junction diode shown in figur...

    Text Solution

    |

  8. Out of following which one is a forward biased diode

    Text Solution

    |

  9. Can we take one slab of p-type semiconductor and physically join it to...

    Text Solution

    |

  10. The V-I characteristic of a silicon diode is shown in the Fig. 14.17. ...

    Text Solution

    |

  11. Freuency of given AC signal is 50 Hz. When it connected to a half - wa...

    Text Solution

    |

  12. What is the output form of full-wave rectifier ?

    Text Solution

    |

  13. In a Zener regulated power supply a Zener diode with V(Z) = 6.0 V is u...

    Text Solution

    |

  14. The current in the forward bias is known to be more (-mA) than the cur...

    Text Solution

    |

  15. Why are Si and GaAs are preferred materials for solar cells?

    Text Solution

    |

  16. For a CE transistor amplifier, the audio signal voltage across the col...

    Text Solution

    |

  17. In common emitter transistor as shown in Fig., the V(BB) supply can be...

    Text Solution

    |

  18. Show the output waveform of OR gate for the following input waveforms ...

    Text Solution

    |

  19. Sketch the output waveform obtained from AND gate for the following in...

    Text Solution

    |

  20. Sketch the output wavefrom Y from a NAND gate having following inputs ...

    Text Solution

    |