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biasing is nothing but addition of sufficient DC voltage source in the transistor circuit so that the transistor always remains in ON state. The AC signal has both positive and negative cycles , there is no problem with positive cycle , only negative cycle bothers us because the negative cycle makes the emitter-base junction reverse biased this brings the transistor to a cut-off state. To avoid this we bias the transistor with a DC voltage so that the emitter-base junction is always forward biased.
For an AC signal let the peaks be(+A,-A)
suppose that a DC voltage of V volts is applied then the peaks would change to (V+A,V-A) here we must always ensure that V>A
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoas some transistors are needed to be overloaded . biasing process is done with them .
Wiki User
∙ 12y agoThe need of baising is to neutralis some of the charges of the depletion layer so that the majority charge carriers can flow across the junction freely.
Wiki User
∙ 13y agoA: To set a voltage where the transistor is in its linear region as oppose to of or off.
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Which biasing is known to as universal biasing?
voltage divider biasing
What are the types of biasing in pn junction diode?
There are 2 type of biasing in PN junction didoe Forward biasing Reverse biasing
What type of biasing must be used when a zener diode is used as a regulator?
REVERSE biasing. Parvezctg2@gmail.com.BD
What happens in the depletion region in reverse bias?
in forward biasing depletion region width decreases and in reverse biasing it increases .
Why is it necessary to bias a transistor when it is to be used as an amplifier?
Biasing is necessary in a transistor circuit to keep the transistor working. Without proper biasing, the circuit will fail
Which biasing is known to as universal biasing?
voltage divider biasing
How biasing of FET differs from biasing of BJT?
in BJT forwardbiasing & reverse biasing are carried out but in FET voltage divider biasing &self biasing are carried out.
What are the types of biasing in pn junction diode?
There are 2 type of biasing in PN junction didoe Forward biasing Reverse biasing
In which transistor bias method is the input signal rectified?
in which of the following transistor bias methods is the input singel rectified? A. source biasing b.voltage divider biasing c.power supply biasing d.avc biasing
What effect of depletion layer by biasing?
on forward biasing width of the depletion layer decreases whereas on reverse biasing the width of depletion layer increases.
What type of biasing must be used when a zener diode is used as a regulator?
REVERSE biasing. Parvezctg2@gmail.com.BD
What the threshold voltage depends on?
It basically depends on the biasing of a transistor. In case of a MOSFET, it depends on the substrate biasing.
What is diode biasing?
Shem
What happens in the depletion region in reverse bias?
in forward biasing depletion region width decreases and in reverse biasing it increases .
Why is it necessary to bias a transistor when it is to be used as an amplifier?
Biasing is necessary in a transistor circuit to keep the transistor working. Without proper biasing, the circuit will fail
What is the forward biasing of a junction?
Forward biasing can be satisfied when a positive polarity of a battery connect with P side and the negative connect with N side In the P-N junction, that is caused : The free electrons in the N side will pushed by negative charge, and holes move far of positive charge, after that we will have a barrier (small area of barrier between P and N) this biasing called Forward biasing, because of small resistance of barrier, the current will flow, we can use it as a switch. the Reverse biasing is the opesit of all these specifications.
Why do you use biasing circuit?
To fix the operating point
