Student: Deaconescu Ionuţ-Cosmin
Proffesor: PhD. Eng. Zdzislaw Polkowski
Polkowice, Poland
2013
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Introduction
Pulse wave
Rectangular wave
Pulse generator
Rectangular wave generator
Conclusions
Bibliography
In this presentation is being presented on pulse and
rectangular wave generator as a measuring device.
This presentation describes about pulse wave and
rectangular wave generator..
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A pulse wave is a kind of non-sinusoidal waveform that is similar to a square
or rectangular wave. The exact shape of the wave is determined by the duty
cycle of the oscillator. The pulse wave is also known as the rectangular
wave, the periodic version of the rectangular function.
The Fourier series expansion for a rectangular pulse wave with period T and
pulse time τ is:
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A rectangular wave is a kind of non-sinusoidal waveform,
most typically encountered in electronics and signal
processing.
Rectangular waves are universally encountered in digital
switching circuits and are naturally generated by binary
(two-level) logic devices. They are used as timing
references or "clock signals", because this have a fast
transitions.
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The Pulse Generator block generates
square/rectangular wave pulses at regular
intervals. The block's waveform parameters,
Amplitude, Pulse Width, Period, and Phase delay,
determine the shape of the output waveform. The
following diagram shows how each parameter
affects the waveform.
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The Pulse Generator can emit scalar, vector, or
matrix signals of any real data type.
Depending on the pulse's waveform
characteristics, the intervals between changes in
the block's output can vary. For this reason, a
time-based Pulse Generator block has a variable
sample time.
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A rectangular wave is similar to the square wave. The
difference is that in the rectangular waveform, the two
alternations of the waveform are of unequal time
duration shows that the negative alternation (pulse) is
shorter (in time) than the positive alternation.
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The duty cycle of a pulse generator may vary.
Very short duration pulses give a low duty cycle
and the pulse generator generally can supply
more power during its on period than a square
wave.
A rectangular wave generators are used whenever
the low frequency characteristics of a system are
being investigated: testing audio systems, for
instance.
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We don't need to confused with the rectangular wave
generator with pulse generator. Between this are
differences.
The fundamental difference between pulse and
rectangular wave generator concerns the duty cycle.
Duty cycle is define as the ratio of the average values
of the pulse over one cycle to the peak value of the
pulse .since the average value and the peak value
inversely related to their time duration, the duty cycle
can be defined in terms of pulse width and the period
or pulse repetition time:
Duty cycle = pulse width / period
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LIŢĂ Ioan D. ,Circuite electronice pentru achiziția de
date, MATRIX ROM, Bucureşti, 2008
Electronic instrumentation and measurement techniques
by William David Cooper, publishers Eastern
Economic Edition (pdf)
http://www.phas.ubc.ca/~phys209/files/EXP9.pdf
http://www.bel.utcluj.ro/rom/dce/goltean/fec_aai/11_nons
inusoidal_oscillators_aai.pdf
http://www.navymars.org/national/training/nmo_courses/
nmo1/module9/14181_ch3.pdf
http://www.circuitstoday.com/square-wave-generatorusing-op-amp
Thank you for attention!
Dziękuję za uwagę!