Pulses are short-term fluctuations of electric shocks.

Pulse usually refers to a short-term fluctuating electric shock (voltage or current) commonly used in electronic technology. Its main characteristics are waveform, amplitude, width and repetition frequency. The pulse shaping program can produce different pulse waveforms, and the optimal pulse waveform is different according to different applications.

electronic technique

Electronic technology refers to "related technologies with electronic, data, magnetic, optical, electromagnetic or similar properties". The so-called electronic form refers to the information existing form that cannot be directly perceived by human vision or hearing by using electronic technology and must be transformed by some carrier.

The so-called electronic technology can be divided into analog electronic technology and digital electronic technology. Analog electronic technology is the foundation of the whole electronic technology, which plays an irreplaceable role in the fields of signal amplification, power amplification, rectification and voltage stabilization, analog feedback, mixing and modulation and demodulation circuits. For example, Hi-Fi speaker system, high-frequency transmitter in the field of mobile communication, etc.

Compared with analog circuits, digital circuits have a series of advantages, such as high precision, good stability, strong anti-interference ability and program software control. Judging from the current development trend, except for some special fields, some applications of analog circuits tend to be gradually replaced by digital circuits, such as digital filters.

Extended data:

Principle of pulse signal:

The so-called pulse signal is a curve with countless breakpoints in plane coordinates, that is to say, there is no limit of this point in some periodic places, such as sawtooth wave, and the signal 0, 1 of digital circuits used in computers.

Pulse signals, that is, signals similar to pulse jumps, are compared with DC and intermittent signals. If described by water flow, direct current means that the faucet keeps dripping, and pulse means that the faucet keeps opening and closing to form water pulse.

Pulse dialing:

Is a time domain processing method, using the number of pulses to represent numbers. Pulse dialing mode has strict requirements on pulse width, size, spacing and shape. If these parameters are changed due to line interference or other reasons, it may lead to wrong number reception.

On the other hand, because each pulse takes up a certain time (generally, the time taken up by each pulse is 100ms), this dialing method is slow.