मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएचएससी विज्ञान इयत्ता १२

Give the Barkhausen conditions for sustained oscillations.

Advertisements
Advertisements

प्रश्न

Give the Barkhausen conditions for sustained oscillations.

टीपा लिहा
Advertisements

उत्तर

Barkhausen conditions for sustained oscillations
The following condition called Barkhausen conditions should be satisfied for sustained oscillations in the oscillator.

  • The loop phase shift must be 0° or integral multiples of 2π.
  • The loop gain must be unity. |Aβ| = 1
    Here; A – Voltage gain of the amplifier,
    b – feedback ratio; (fraction of the output that is fed back to the input)
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 10: Electronics and Communication - Evaluation [पृष्ठ २४७]

APPEARS IN

सामाचीर कलवी Physics - Volume 1 and 2 [English] Class 12 TN Board
पाठ 10 Electronics and Communication
Evaluation | Q II. 9. | पृष्ठ २४७

संबंधित प्रश्‍न

The common-base DC current gain of a transistor is 0.967. If the emitter current is 10mA. What is the value of base current?


In a common-base connection, a certain transistor has an emitter current of 10mA and a collector current of 9.8 mA. Calculate the value of the base current.


In a common base configuration, the transistor has an emitter current of 10 mA and a collector current of 9.8 mA. The value of base current is ______ 


In the symbol for a transistor, the arrow head points in the direction of the ____________. 


In switching circuit, transistor is in ON state. Values of IC and IB are 5.2 mA and 10 µA respectively and value of RC is 1 k`Omega`. If Vcc is at 5.5 V, then VCE is ______.


Ve, Vb, and Ve are emitter, base, and collector voltage respectively for npn transistor in CE mode. Amplifier works for the combination of biasing voltage equal to ______.


In a transistor, a change of 8.0 mA in the emitter current produces a change of 7.8 mA in the collector current. Then change in the base current is ____________.


A pnp transistor is used in common-emitter mode. If a change of 40 µA in base current brings a change of 2 µA in collector current with 0.04 V in base-emitter voltage, then the input resistance is ____________.


In the case of transistor, the relation between current ratios αdc and βdc is ______.


A common emitter amplifier has a voltage gain of 50, an input impedance of 100Ω and an output impedance of 2000Ω. The power gain of the amplifier is ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×