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What else can I help you with?
Need for biasing?
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
What will happen if instead of npn transister pnp is used?
It really depends on the configuration of the circuit. A transistor can be connected in any of at least 3 configurations: common base, common emitter, and common collector. Each of these type of configurations determines where the source of electron flow is connected. After that, the biasing configuration needs to be determined, and this will change depending on whether you are using an NPN or PNP transistor. In the simpler biasing configurations, swapping a NPN for a PNP or vice versa will prevent current from flowing as the collector, base, and/or emitter will be reverse or forward-biased incorrectly. You would then either be blocking currently flow, or possibly causing a short circuit. Again, it depends on the configuration. Generally speaking, it is not a good idea. One potential result is you can damage the transistor or even destroy it or possibly damage other components in the circuit.
Which biasing technique is best for amplifier?
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.
Why you use capacitor before connecting transtitor?
Before connecting to the transistor we use a capacitor becausefor the transistor to amplify we should first apply DC biasing so that we can set an operating point to itso once the transistor is biased DC currents flow in the whole circuitryAll the AC signal source are shorts to the DC currents so we employ capacitor for two reasons1.As capacitor blocks DC and allows AC it is connected for not moving the DC operating point of the transistor and making it fixed since if any small DC part arises in the signal it leads to the change of operating point and our amplification procees gets affected2.To block the already present DC currents in the circuitry for not getting away and making it fixed
How does a transistor electronically switch the output on?
A transistor can electronically switch the output by controlling the flow of current between its two terminals, called the collector and emitter. It has a third terminal, called the base, which acts as a control input. When a small current is applied to the base terminal, it influences the flow of current between the collector and emitter terminals, effectively turning the transistor "on" or "off" and allowing it to change the output state.
Why are you going for different type of biasing the transistor?
In each of the biasing circuit ,there are variations in Q-point (undesirable)with respect to the temperature. The voltage divider bias serves a better way to minimize the change in Q-point.
Why voltage divider biasing circuit is the widely used biasing?
In a voltage -divider circuit method for biasing a transistor , we have two resistors R1 and R2 a DC supply voltage VCC and other components like collector resistor , emitter resistor are also present.here biasing is done by the help of voltage drop across the resistorsto understand the reason behind the extensive usage of voltage - divider method we need to know about the term stability.Stability factor of a transistor is defined as the ratio of amount of change in collector current to the amount of change in the same collector current with the base open(leakage current due to minority charge carriers)lesser the stability factor ------ that type of biasing is more desiredthe stability factor for voltage divider method is nearly equal to one.
Need for biasing?
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
What happens in human condition when change occurs?
When change occurs your whole perspective on the event will change. It will change your emotion and everything about you
What happens to animales that cannot adapt to change seasonal weather condition?
die
What will happen if instead of npn transister pnp is used?
It really depends on the configuration of the circuit. A transistor can be connected in any of at least 3 configurations: common base, common emitter, and common collector. Each of these type of configurations determines where the source of electron flow is connected. After that, the biasing configuration needs to be determined, and this will change depending on whether you are using an NPN or PNP transistor. In the simpler biasing configurations, swapping a NPN for a PNP or vice versa will prevent current from flowing as the collector, base, and/or emitter will be reverse or forward-biased incorrectly. You would then either be blocking currently flow, or possibly causing a short circuit. Again, it depends on the configuration. Generally speaking, it is not a good idea. One potential result is you can damage the transistor or even destroy it or possibly damage other components in the circuit.
Why is biasing needed?
The function of BiasingA BJT (Bipolar Junction Transistor) require a voltage normally in the range of 0.7V for the internal junctions to become conductive. It is a fixed parameter of Silicon (Si) due to the amount of 1.1eV required to get electrons from the valence energy band into a conductive band. To be able jump the energy gap which is a forbidden band for electrons or to raise the Fermi energy level in the atom. The energy, whether it is electrically applied, thermally or optically, is required to be able change the state of a semiconductor from an insulator to an conductor. You can read more on "semiconductor theory" for better understanding. Then with a non-linear relationship the conductivity will increase as one increase the forward bias current through the base to emitter junction. Biasing is used for classical transistor amplifier applications. Biasing is required to have the transistor half way saturated for Class-A amplification or barely switched on for Class-B power amplifiers. If a Class-B amplifier is not biased, then the lower 0.7V of the audio or sine wave will not be amplified causing crossover distortion. When you bias it correctly, the distortions will be gone, since the entire half wave will then fit into the on state of the transistor. If a Class-A amplifier is not correctly biased, premature clipping on the positive or negative part of the wave will occur.Biasing may be used for other applications as well, such as photo transistors, internal construction of IC's such as op-amps.
Which biasing technique is best for amplifier?
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.
What are sleep transistors?
A rest transistor is either a pMOS or nMOS high VT transistor and is utilized as a change to close off force supplies to parts of a configuration in standby mode. The pMOS rest transistor is utilized to switch VDD supply and henceforth is known as a "header switch."
Why you use capacitor before connecting transtitor?
Before connecting to the transistor we use a capacitor becausefor the transistor to amplify we should first apply DC biasing so that we can set an operating point to itso once the transistor is biased DC currents flow in the whole circuitryAll the AC signal source are shorts to the DC currents so we employ capacitor for two reasons1.As capacitor blocks DC and allows AC it is connected for not moving the DC operating point of the transistor and making it fixed since if any small DC part arises in the signal it leads to the change of operating point and our amplification procees gets affected2.To block the already present DC currents in the circuitry for not getting away and making it fixed
What is unmodulated signal from a transistor is called?
When the out from a transistor is the exact replic of the input signal then it is called unmodulated signal i e. there will not be any change in frequency voltage power etc
Transfer characterstics of transistor-transistor logic family?
A: The characteristic will be the same as DTL RTL TTL the logic will not change but the transfer function for each family is certainly different
