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Science Forum Index » Electronics - Design Forum » digital
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| nil |
 Posted: Thu Feb 15, 2007 12:35 am |
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Guest
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hello friends i would like to know that why digital signal frequency
is maximum PAI. |
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| whit3rd |
| Posted: Thu Feb 15, 2007 7:53 pm |
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Guest
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On Feb 14, 8:35 pm, "nil" <khandare.nil...@gmail.com> wrote:
Quote: hello friends i would like to know that why digital signal frequency
is maximum PAI.
There is a reason for high-frequency digital signals.
It is the Eccles-Jordan configuration of two amplifiers and feedback.
Originally, they used vacuum tubes (it was about 1920).
Analog signal processing, using amplifiers and filters,
generally takes in limited-bandwidth signals and outputs
similarly limited-bandwidth signals. The Eccles-Jordan circuit
and its developments are different, in that the output
includes higher frequencies than the inputs (limited only by
the physical makeup of the amplifiers used).
Flip-flops, Schmitt triggers, registers, latches, multivibrators,
monostables, all are based on the Eccles-Jordan circuit.
These are all bistable circuits (no matter what the input
condition, only fullly ON or fully OFF output conditions
will result), and are truly binary circuits as a result.
The transition from ON to OFF occurs at full speed,
and terminates only when the amplifiers saturate (i. e. limit
out, lose gain due to limited power/voltage/current).
All modern digital logic technologies include these bistable
elements, and that means that high frequency is always
present in such digital logic (whether you need it or not). |
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