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How must the two transistor junction be biased proper transistor amplifier operation?
Wiki User
∙ 11y ago
A: Actually it is only one transistor required for amplification the other junction can be a diode. As current Begin to flow it causes a bias across one junction which is opposite biasing for the other, A good differential amplifier will have those junction virtually at the same point with a very good current source because any mismatched will cause and output without any input. It is called voltage offset on the other end if the feedback current is very small it will also produce an output voltage offset known as current offset or basically errors
Clovis Waters
Wiki User
∙ 15y agoIt depends on the type of the transistor. For a BJT, the transistor must be biased at the center of the linear region, you can know the center by plotting the load line. Be careful for the DC and the AC load lines. For a EMOSFET transistor, it must be biased in the saturation region.
Wiki User
∙ 15y agoThe emitter-base junction must be forward biased, and the collector-base junction must be reverse biased.
Wiki User
∙ 12y agoIn a transistor for normal operation , emitter base junction is forward biased and collector base junction is reverse biased.
Wiki User
∙ 12y agolight doping for the base,high doping for emitter and intermediate doping for collector
Wiki User
∙ 11y agobase-emitter forward biased, base-collector reverse biased.
Wiki User
∙ 14y agothis diagram help you
Wiki User
∙ 11y agoBE forward biased, BC reverse biased.
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What happen if the series resistor in a forward-biased p-n junction is short-circuited?
The junction (diode or transistor) will be destroyed.
Normal operation of the transistor collector diode has to be?
Reverse-biased ---from the book of Malvino
What are the uses of BJT?
Bipolar junction transistors has two junctions base emitter junction, base collector junction. Accordingly there are four different regions of operation in which either of the two junctions are forward biased reverse biased or both. But the BJT can be effectively operated in there different modes according to the external bias voltage applied at each junction. i.e. Transistor in active region, saturation and cutoff. The other region of operation of BJT is called as inverse active region.
How is an transistor used as a amplifier?
Voltage is applied between the collector and emitter. A signal is applied between the base and emitter. The input signal will control how much the transistor turns on and the larger current flowing across the Collector/Emitter will be the same, but larger, than the input. Therefore amplified.To keep the transistor switched on and to prevent the input signal switching it off, the transistor has to be biased on. This is usually done with a network of resistors on the base, raising the voltage to keep it conducting.
What are the uses of transistor in circuits?
Basically each and every amplifier circuit is made up of coupling or use of transistors. The amplifier amplifies the signals because transistor makes either voltage or current to rise as a result of either of it's regions of operation i.e. open circuit(cut off region) or short circuit (saturation region) Both the operation regions are not required continuously. Hecne the transistor works in either saturation or cut off regions only when emitter-base junction is forward biased, which can be applied as per requirement. APPLICATIONS OF TRANSISTOR AND HENCE AMPLIFIERS ARE : OSCILLATORS, LOUD-SPEAKERS, POWER AMPLIFIERS, VOLTAGE AMPLIFIERS, CURRENT AMPLIFIERS, ANALOG TO DIGITAL CONVERTER, DIGITAL TO ANALOG CONVERTERS
How should the two transistor junctions be biased for proper transistor amplifier operation?
Emitter-Base junction should be forward biased.Collector-Base junction should be reverse biased.
A PNP transistor is connected in a circuit so that the collector-base junction remains reverse biased and the emitter-base junction is forward biased This transistor can be used as a power amplifier?
Yes1
A transistor is in active region when?
a transistor in active region when emitter junction is forward biased nd collector junction is reverse biased
How do you know if a transistor is a PNP or an NPN?
To know if a transistor is PNP or an NPN,the following should be verified:For a PNP transistor, the base-collector junction is forward biased while the base-emitter junction is reversed biased.For an NPN transistor, the base-emitter junction is forward biased while the base -collector junction is reversed biased.
How must the two transistor junctions be biased for proper transistor amplifier operations?
A: Actually it is only one transistor required for amplification the other junction can be a diode. As current Begin to flow it causes a bias across one junction which is opposite biasing for the other, A good differential amplifier will have those junction virtually at the same point with a very good current source because any mismatched will cause and output without any input. It is called voltage offset on the other end if the feedback current is very small it will also produce an output voltage offset known as current offset or basically errors
Bias conditions must be present for the normal operation of a transistor amplifier?
All of the transistors must be biased in their operating range to work correctly.
What is the biasing technique in transistor for it to be in active region?
For a transistor to be in active region : Base Emitter junction should be forward biased and Emitter collector junction should be reverse biased.
Why jfet is called as junction field effect transistor?
Because the insulation between the gate and the channel is only a reverse biased PN junction. If this junction were to become forward biased the jfet would no longer operate as a transistor at those times.
What are modes of biasing a transistor?
Transistor works as amplifier,oscillators,switch only when it is biased properly.biasing can be defined as how much amount of voltage that has to be supplied to each junction of the transistor in order to make it work as any one of the above given types.biasing voltage can be decided by seeing the V to I graph of a transistor
What happen if the series resistor in a forward-biased p-n junction is short-circuited?
The junction (diode or transistor) will be destroyed.
What is a barrier voltage?
The voltage across a forward-biased PN junction in a semiconductor diode or transistor.
When the both junction of npn diode is reverse biased then the diode in which mode?
Transistor will be in OFF mode.
