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Voltage amplifier
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∙ 14y ago
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What to expect if a resistor is placed in a dc circuit with a capacitor?
when we replace the resistor with a capacitor ,the current will flow until the capacitor charge when capacitor will fully charged there is no current through the circuit because now capacitor will act like an open circuit. for more info plz E-mailt me at "zaib.zafar@yahoo.com"
What is the application of bipolar junction transister?
bipolar junction transistor is known as BJT in short form.they are made by cascading two P-N junction.we can not imagine any electronics circuit without Bjt.they have plenty of applications,one of the most important application is of switch.it can act as a switch.moreover it can act as a resistor.they can amplify weak signals into strong signals.in a chip which is used to run a computer or laptop there are millions of transistors cascaded in a chip which has size nearly of fingernail. you can find more information on youtubeBy-Nihar.N.Suryawanshi.
Why transistor is used as an amplifier?
A transistor acts like a valve or gate that opens and closes, and allows a current to flow. Since the amount of current that flows is controlled by another input, they can be used to make amplifiers. Carbon microphones and vacuum tubes have the same property, and so have also been used to make amplifiers historically.
Did the north like the Kansas-Nebraska Act?
No
How do you act like Bart Simpson?
Be an underachiever.
How transistor acts as a amplifier?
A transistor does not act as an amplifier. It is used as a component in an amplifier circuit.
Can a transistor can act like resistor capacitor inductor?
A transistor acts like a resistor when Gate is connected to Source.
Why a transistor acts as a switch?
Only because the circuit that its embeded in is designed that way. Remember, a transistor is basicly an amplifier ... only if you design everything to go to the extreams will it act as a switch.
How transistor act as a switch?
A: When a transistor is saturated current can flow in both direction qualifying it as a switch
How do capacitors work in conjunction with transistors?
hi am just a newbie in a electronics but with the little knowledge i got, well, when a capacitor is connected with a transistor, the circuit can act like a multivibrator i.e charge and discharge to the transistor base as in timer circuit.When the capacitor is connected to the power supply e.g battery,it will charge to an extent that the charge in it will be equal to the charge the base of the transistor will need to turn the transistor on,say 0.7v and when the transistor is on then the collector will start work.NOTE:this process happens in milli seconds and also that i might be wrong somewhere so lets research more to get the answers.this is for my fellow newbies in ELECTRONICS.
What does an resistor do?
Most of the time emitter resistors are used to set the bias point of the transistor. Occasionally emitter resistors may act as fast blow fuses to protect a power transistor. In series linear voltage regulators an emitter resistor on each pass transistor to the regulated node is there to equalize current sharing between the pass transistors. In other words it depends on the circuit design.
Why transistors are designed?
For switching applications transistor is biased to operate in the saturation or cutoff region. Transistor in cutoff region will act as an open switching whereas in saturation will act as a closed switch.
Can a transistor act as temperature sensor?
yeah...it can... if u attach a thermometer to it!! =) =P
Video of transistor act as an amplifier?
pulse of positive voltage is not indicate to zero
Why diode is active device when all other active devices require external power supply?
A Device is said to be active if... (i) It is a source of Power in the circuit... (ii) It amplifies any voltage or current in a circuit... (iii) It acts as a switch ie., has modes equivalent to ON and OFF... e.g., transistor amplifies and can also act as a switch...
How does a transistor act as a oscillator?
A: actually any active components will oscillate with positive feedback A transistor can be used as an amplifier along with an LC tank circuit to form an oscillator; it is an active device (as LIBURNO states) which will amplify the feedback signal coming out of the LC tank circuit. The tank circuit has a natural resonant frequency, meaning the L and C together will try to generate a specific frequency; this is then fed back into the input of the transistor amplifier, and the output is fed to the LC tank circuit exacerbating this oscillation until it reaches its' maximum level. An inverting amplifier can be used similarly; the output is fed to the input; this will cause the output to change as fast as the amplifier can. The frequency of this design is much harder to control, but potentially higher. Also, without the LC tank, the output voltage will remain lower.
How the size of transistor reduced to place in a single pocessor?
transistor size depends on its channel length, that is the length of the region in which a transistor act as an electron tube. the shorter the region, the lowest the resistance, the fastest the transistor, etc... so, it is always good to scale transistor size. problem is that you have to apply a 'good' electrical field in the channel, in order to drive a good 'ON' or 'OFF' state for your transistor. that's why it's not easy to scale their size.
