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Various FET biasing circuits are as follows: 1. Fixed bias 2. Self bias 3. Potential divider bias 4. Current-Source bias
The voltage or Potential divider bias or the self bias circuit is the best biasing technique because,it has very low stability factor(change in collector current with respect to Ico or Vbe or current gain beta). only in this technique the increase in temperature wont affect the collector current.
Self biasind is called self because in this biasing, the variation due to change in temperature increases the the collector current, which hence decreases the output voltage i.e Vout=VCC-ICR and maintains the stability
The picture quality is not that great but here is a drawing of a self biased common collector BJT http://imageshack.us/photo/my-images/200/selfbiasedcommoncollect.png/
the circuit might not operate properly. but shouldn't effect the circuits them self.
the advantage of self bias circuit will be stable for greater range of amplitude signal than the fixed biased amplifier circuit the disadvantage is it only partially effective and therefore is only used where moderate changes in ambient temperature are expected
of course stability of self bias circuit is much greater than fixed bias circuit
emitter bias provides a feedback to the circuit so that circuit remains in linear regionn
emitter bias provides a feedback to the circuit so that circuit remains in linear regionn
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1. stability factor s for voltage divider or self bias is less as compared to other biasing circuits . So this circuit is more stable and hence it is most commonly used. 2. this circuit is used where only moderate changes in ambient temperature are expected 3. the bias automatically adjusts to any variations in the circuit. by prerita agarwal
Various FET biasing circuits are as follows: 1. Fixed bias 2. Self bias 3. Potential divider bias 4. Current-Source bias
What? Bias is a one sided opinion
Fixed Bias,Self Bias, Forward Bias, Reverse Bias
Self-enhancing bias refers to the tendency for individuals to attribute their successes to internal factors such as their abilities or efforts, while attributing their failures to external factors such as luck or situational circumstances. This bias can lead to overestimating one's capabilities and achievements while underestimating the influence of external factors on outcomes.
the bias that we are better, smarter, and kinder than others
The Self Bias of the BJT is also called the voltage divider bias. It is called thus because it can stabilize the collector current, the base emitter voltage and the amplification factor.