Pulse signal is a kind of discrete signal with different shapes. Compared with ordinary analog signals (such as sine waves), the waveforms are discontinuous on the Y axis (there are obvious intervals between waveforms) but have a certain periodicity. The most common pulse wave is a rectangular wave (square wave).

The time interval between pulse signals is called period; The number of pulses generated per unit time (1 sec) is called frequency. Pulse signal can be used to represent information, can also be used as a carrier wave, and can also be used as a clock signal for various digital circuits and high-performance chips.

Extended data:

Generation of pulse signal:

Pulse signals are generally generated by using the principle of self-excited oscillation. The self-excited oscillation circuit is a positive feedback circuit, and its input signal is generated by the filter circuit.

Any pulse signal has a frequency. If its frequency is known, the filter circuit can be adjusted to make the signal obtained on the filter circuit have the same frequency as the pulse signal. In this way, the sine wave with the same frequency as the pulse signal is finally obtained through positive feedback amplification.

This sine wave can be shaped to achieve the required pulse signal, such as square wave, triangular wave, sawtooth wave and so on. There are many kinds of shaping circuits, such as comparators and voltage regulators.

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