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You can create an astable multivibrator with PNP, NPN, FETs, or even with NOR gates, NAND gates, or NOT gates. In fact the escapement movement in a mechanical watch is a species of astable multivibrator.
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What is the use of a astable multivibrator?
1. It is used for the performance of many digital operations such as counting and storing binary information. 2. It is also used in the generation and processing of pulse-type waveforms.An astable multivibrator [also known as an oscillator] is a circuit built so that it does not come to rest in one single state but switches between them continuously.
Difference between monostable multivibrator and astable multivibrator?
No, cant use bistable multivibrator in place of monostable multivibrator... because monostable is meant for one stable state and one unstable state.. so there will be a constant time period for the alternate pulses of output.. but in bistable multivibrator, both are stable states.. so there is no specific time period for the output pulses.. the state will vary only on the application of mannual trigger...
What is the advantage of astable multivibrator using 555 ic over those made with opamp or bjt?
555 an IC which can be used for many applications and one of the application is astable multivibrator. For many applications we use IC 555 because its cost effective and have lot of features.The main difference is astable multivibrator switches from one state to another state automatically i.e when a pulse is given to astable multivibrator, it immediately switches to high state and remains for certain time and switches back to low state. In 555timer you can decide your own application.
What jobs can a transistor do when combined with the CPU?
The modern CPU (typically inside a microprocessor IC) is built of billions of transistors (typically complementary MOSFETs). The CPUs of the late 1960s were built of tens of thousands to hundreds of thousands of transistors inside several hundred MSI ICs (typical silicon NPN BJTs). The CPUs of the late 1950s to early 1960s were built of thousands to tens of thousands of discrete transistors (typically germanium BJTs, gradually transitioning silicon BJTs). The CPUs of the early 1950s did not use transistors, they were built of hundreds to tens of thousands of vacuum tubes.
What is the use of fins in tri gate transistors?
cooling
What is the use of a astable multivibrator?
1. It is used for the performance of many digital operations such as counting and storing binary information. 2. It is also used in the generation and processing of pulse-type waveforms.An astable multivibrator [also known as an oscillator] is a circuit built so that it does not come to rest in one single state but switches between them continuously.
Why you use NPN transistors rather than PNP?
Switching is faster in NPN transistor than PNP. Because movement of electrons is faster than holes.
Difference between monostable multivibrator and astable multivibrator?
No, cant use bistable multivibrator in place of monostable multivibrator... because monostable is meant for one stable state and one unstable state.. so there will be a constant time period for the alternate pulses of output.. but in bistable multivibrator, both are stable states.. so there is no specific time period for the output pulses.. the state will vary only on the application of mannual trigger...
What is the advantage of astable multivibrator using 555 ic over those made with opamp or bjt?
555 an IC which can be used for many applications and one of the application is astable multivibrator. For many applications we use IC 555 because its cost effective and have lot of features.The main difference is astable multivibrator switches from one state to another state automatically i.e when a pulse is given to astable multivibrator, it immediately switches to high state and remains for certain time and switches back to low state. In 555timer you can decide your own application.
Why you use majority NPN transistor but not PNP transistor?
please send the answer...................... answer: people are positive animals we think positive +5v for instance is the predominate voltage in a computer PNP will work fine on a -5v environment but +5 volt is here to stay so NPN transistors are predominate
How can you continuously generate a tone for a certain duration?
I would use two 555 timer ICs. Hook the first one up as a monostable multivibrator and the second as an astable multivibrator. The first one sets the length of duration and the second sets the frequency of the tone. Go to your local bookstore and get a copy of "IC Timer Cookbook" by Walter G. Jung. This is an excellent book and will describe the pinouts and methods of assembly.
Why use of Multivibrator?
it gives a nice pleasurable experience
How monostable multivibrator can be used to generate?
we can use monostable multivibrator.But generally its o/p is a square wave so to get a pulse type waveform,we may use differentiator after monostable multivibrator....
Why use a npn transistor in a common emitter bjt single stage amplifier circuit?
You can use an npn or a pnp bjt in a common emitter amplifier circuit. The decision of which one to use is based on whether you want the collector and base to be more positive (npn) or more negative (pnp) than the emitter.
What is the practical use of astable multivibrator?
it can be used any where, where we need the clock pulse train of low frequancy.like a function generator contains.astable multivibrator is used to produce waveformsas Astable means the circuit is not set to one state or the other but rather oscillates between those states. Therefore the application is signal generation
What is a complementary symmetry amplifier?
A complimentary-symmetry amplifier is a power output stage using two transistors. One is an NPN and the other is PNP, and normally the designer will use transistors that are compliments of one another (TIP31C for NPN and TIP32C for PNP, for example). The transistors are hooked in series in a sort of push-pull arrangement. The NPN's collector connects to the positive voltage rail and the PNP's collector connects to either A) ground or B) a negative but equal voltage rail. The emitters are connected together and are at either A) 1/2 the positive voltage supply or B) zero volts. In A) a large coupling capacitor must be used to connect to the speaker while in B) there is no DC difference and the speaker can be directly connected. This configuration is similar to a "self-inverting push-pull" circuit in tube-speak. A positive-going input pulse will cause the NPN to conduct more and the PNP to conduct less. A negative-going pulse will cause the PNP to conduct more and the NPN less. It's useful for a small, transformerless output stage but there are more efficient and clearer designs. I can't tell you much more as I'm just now getting into transistors and am still experimenting with this circuit. That was probably more info than you were wanting, however. Good luck.
I am trying to make a seat belt safety light How do you add in a buzzer to an astable circuit which already has and LED?
Use the astable to switch a power transistor and connect the buzzer as the transistor load.
