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"The application of a DC voltage in forward bias mode to a circuit containing a diode will result in a specific DC voltage and DC current across the diode, known as the DC operating point, Q point (VDQ, IDQ)."
source: http://www.doe.carleton.ca/~achar/notes_2507/Lab3_tutorial_diodes.pdf
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How do you select the operating point for the amplifier?
selection of operating point is very important in the electronics circuit designing or construction of amplifiers 1. operating point is generally selected as the point of intersection of both DC and AC load lines. 2. they may also be chosen as the mid-point of DC load line if maximum symmetrical swing of the signal is desired
What happens when load is removed from an operating series DC motor?
The speed will increase possibly to the point that it throws out the coils from the armature & self destructs.
How operating point of transistor shifting?
Usually, the operating point of a transistor shift because of temperature induced gain or bias changes.
What is the significance of Q point?
Q point is also called operating point.Q point is mainly adjusted in transistors to make it stable. i.e., to operate the transistor in safe mode. Depending up on the operating current and voltage Q point is adjusted. The Q point defines the operating condition of the transistor and the transistors which quiescent point is adjusted are denoted as Q1,Q2.........Qn
Is electricity AC Or DC currant which one?
Electricity or rather electric currant can be either AC or DC. AC means alternating current (as in that electricity that is supplied by the mains) and DC means direct current (as in that electricity supplied by a battery)..
What is the purpose of dc biasing of transistor?
to establish Q- point or operating point...
What is an operating point of dc load line?
operating point of dc load line refers to point where there is no signal either no amplification use to take place as base current is zero(in case of common emitter configuration) and it is represented by Q.......
How do you select the operating point for the amplifier?
selection of operating point is very important in the electronics circuit designing or construction of amplifiers 1. operating point is generally selected as the point of intersection of both DC and AC load lines. 2. they may also be chosen as the mid-point of DC load line if maximum symmetrical swing of the signal is desired
Why operating point of transistor is called as q point?
Q-point means motionless point. At operating point the transistor emitter current and collector current doesn't change. That is why operating called as a quiesent point (q-point)
Quiescent operating point of a transistor amplifier lies in?
It lies in middle of the DC load line of that Amplifier.
What is difference between AC and DC load line?
A dc load line is formed by joining the 2 points wherin the slope is equal to the inverse of the load resistance.. whereas the ac load lin has a different slope... and it intersects the dc load line at the quiescent point.
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
Define the operating point of a transistor how it is stabilized and why it should be stabilized?
The operating point of a device, also known as bias point, quiescent point, or Q-point, is the point on the output characteristics that shows the DC collector-emitter voltage (Vce) and the collector current (Ic) with no input signal applied. The term is normally used in connection with devices such as transistors.
What happens when load is removed from an operating series DC motor?
The speed will increase possibly to the point that it throws out the coils from the armature & self destructs.
Why you are giving dc supply for biasing the amplifier why not ac?
The purpose of biasing an amplifier is to shift its operating point, so that when you apply a signal in you will get a expected signal out. The operating point is generally in the middle of the linear region. You would not use AC for the bias, as that would cause the operating point to constantly shift, and you would then not be able to differentiate between the signal and the bias.
Operating point in the transistor means?
The operating point of a transistor is simply the point, or circuit condition, where it is biased. With no signal present, the operating point sets the collector-emitter current, and the resulting voltages. Ideally, the operating point is chosen to be the midpoint of the linear region of operation, so as to minimize distortion and to maximize range. Since transistors have varying gains (hFe), and since the gain is temperature dependent, the operating point is usually chosen to be a range that also maximizes stability and minimizes the variability of the individual transistor.
What is q-point of transistor?
The operating point of a device, also known as bias point or quiescent point (or simply Q-point), is the DC voltage and/or current which, when applied to a device, causes it to operate in a certain desired fashion. The term is normally used in connection with devices such as transistors and diodes which are used in amplification or rectification.
