Saturday, September 14, 2013

Definition of buffer in digital electronics?What is the advantages of buffer circuits in digital electronics?

Definition of buffer in digital electronics?

A buffer is a means of isolating a signal source circuit from the loading circuit. They are generally needed when the signal source does not have sufficient capacity to deliver the current demanded by the load circuit. If buffers are not used, a problem called input loading results and this may cause the circuit to malfunction or to become damaged.
In digital circuits, the buffers reproduce the sequence of 1's and 0's received from one circuit and make them available to another circuit at a higher power level. A buffer is like a non-inverting amplifier with a gain of unity.

 

What is the advantages of buffer circuits in digital electronics?

buffer circuits helpful in overcoming the impedance matching problem.for example if we want to send a signal from one devise to other ,if there is no impedance matching between this two then signal is not transfered.now if we use buffer in between these two devises then the buffer without changing the signal shape or value it simply transffers the signal.

 

What are the application of buffer circuit in Electronics?

One prominent application is this: 

Some circuits have an output impedance very high. If these circuits are coupled with another circuit of low input impedance, the desired functionality of the latter circuit will be drastically affected. Because the first circuit tries to deliver large voltage to the second and the second invariably requires small input voltage. 

To avoid the circuit disfunctionality, a buffer circuit (a circuit with high i/p impedance and a low o/p impedance) is used. 

Another application is in the delay matching. This is an advanced topic though. The technology is still new. 
In delay matching, the latter circuit requires a delay of say "n" seconds after the first circuit's output. A buffer circuit is used in such cases also. The circuit design is totally different than the impedance matching case.

 

What are the pharmaceutical and biological applications of buffer?

when we want to know how much time the tablet will take to disuntegrate in stomach we use pH 1.2 buffer.

 

Examples of Buffering agent in pharmaceutical ingredients?

sodium acetate tyihydrate

 

 

 

 

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