Advertisements
Advertisements
प्रश्न
Explain the need for a feedback circuit in a transistor oscillator.
Advertisements
उत्तर
If the portion of the output fed to the input is in phase with the input, then the magnitude of the input increases. It is necessary for sustained oscillations, so a feedback circuit is needed for a transistor oscillator.
APPEARS IN
संबंधित प्रश्न
In a common-base connection, the emitter current is 6.28 mA and the collector current is 6.20 mA. Determine the common-base DC current gain.
Which method of biasing is used for operating a transistor as an amplifier?
The principle based on which a solar cell operates is ____________.
ln switching circuit, transistor is in ON state and values of IC and IB are 4.2 mA and 5 µA respectively and RC= l k`Omega` and RB= 300 k`Omega`. If VBE = 0.5 V, find the value of VBB.
In a common emitter amplifier circuit using an n-p-n transistor, the phase difference between the input and the output voltages will be: ____________.
In an npn transistor circuit, the collector current is 10 mA. If 90% of the electrons emitted reach the collector, the emitter current (IE) and base current (IB) are given by ____________.
In common emitter mode of transistor, the d.c. current gain is 20, the emitter current is 7 mA. The collector current is ______.
In the common-emitter configuration of a transistor, the current gain is more than 1 because [lb, le, and lc are base, emitter, and collector currents respectively] ______
The reverse bias in a junction diode is changed from 8V to 13V, then the value of the current changes from 40μA to 60μA. The resistance of junction diode will be ______.
In a CE amplifier, the current gain is 80 and the emitter current is 9 mA. The base current is ______.
