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"Biasing" applies to transistor amplifier circuits. Simple amplifier circuits can only amplify positive signals. Negative signals cause the amplifier to shut down. However, AC signals in general have both a positive and a negative part. To allow a transistor to amplify AC, we add a positive voltage to the AC signal. Then after it is amplified, we remove the positive voltage again.
The voltage, ac or dc on the base, compared to the emitter to cause operation of the transistor to conduct to the collector or to the emiiter in a NPN transistor.
Wiki User
∙ 15y ago
Wiki User
∙ 6y agoCan be use as a virtual switch.
Can be use as a linear amplifier.
Reverse biasing helps to prevent a transistor from being overdriven. For instance, in an AM radio I built from a kit, there was a trace from the RF amp section. likely passed through a diode with a capacitor there, and passed through a resistor and going to a transistor in the audio preamp stage. That allowed for more consistent audio and allowed the preamp to not work any harder than it had to. So where there was poor reception, no voltage was reaching the audio preamp transistor as reverse bias, so the transistor worked as hard as it could. But when enough signal was skimmed off the RF amp to act as reverse bias, the transistor was not allowed to work as hard.
Wiki User
∙ 12y agoA transistor is a three terminal semiconductor device that can be used for a variety of applications, as amplifiers and switches, etc. Bias is something you do to setup the transistor to get it to operate in the desired mode. Beyond that, the two terms are actually not comparable. Its like asking to compare an automobile and a foot.
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∙ 12y agoBiasing is done to fix the operating point of amplifier
Wiki User
∙ 11y agowhen transistor is subjected to an external power supply threw the biasing registors then it is called biasing.
biasing is used to fix the Q-point of the transistor.
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∙ 11y agothe set point for the idle circuit about which it is desired to operate when active.
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∙ 14y agotransistor Biasing
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What is the voltage necessary to forward bias a transistor?
A silicon transistor needs about 0.65 v of forward bias on the base to begin to conduct.
How do you bias a 2N5777 photo-transistor?
connect the base of the transistor to a variable resistor and to a normal resistor
What is the relation between transistor operating region and bias conditions?
A: Depending on the load each linear operating region depends on the load and the correct bias insure it ANSWER: The relationship is strictly related to the bias Change the bias you change the operating region point of departure
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
Why a transistor can be operated in active region?
a transistor can only work in active region cox in active region collector base junction is in reverse bias and emitter base junction is in forward bias.
Why do you consider it necessary to bias transistor?
Why do you consider it neccessary to bias transistor?
What the difference between Transistor and resistor?
The difference between a Transistor and a Resistor is that a transistor is designed to amplify the electrical current, whereas a Resistor is designed to reduce the electrical current.
What has the author Eric Wolfendale written?
Eric Wolfendale has written: 'Transistor bias tables (germanium)' 'Transistor bias tables'
What is the voltage necessary to forward bias a transistor?
A silicon transistor needs about 0.65 v of forward bias on the base to begin to conduct.
What are the bias conditions base collector junctions for a transistor to operate as a switch?
Reverse bias
Why do you bias a field effect transistor?
we do bias field effect transistor because FET works if its Q point lies into active reason .If we bias FET ,the Q point lies in active reason
What is the difference between skepticism and bias?
Skepticism is uncertainty, while bias is prejudice.
How do you bias a 2N5777 photo transistor?
connect the base of the transistor to a variable resistor and to a normal resistor
How do you bias a 2N5777 photo-transistor?
connect the base of the transistor to a variable resistor and to a normal resistor
What is the difference between the input bias current and the input offset current?
A: difference in bias current causes the other
What are the factors that affect the bias stability of a transistor?
temperature
What is bias an experiment?
The bias is the difference between the expected value of a parameter and the true value.
