What are the pulse parameters? Pulse parameter introduction

Pulse introduction

Pulses usually refer to pulse-like, transient fluctuations in electrical impulses (voltage or current) often used in electronics. The main features are waveform, amplitude, width and repetition frequency.

Pulses are signals that occur for a short period of time relative to a continuous signal over the entire signal period, and there is no signal for most signal periods. It's like the pulse of a person. Now generally referred to as a digital signal, it is already half the signal in one cycle. The signal inside the computer is a pulse signal, also called a digital signal. In addition, impulses are also used to express thought impulses and impulses.

What are the pulse parameters? Pulse parameter introduction
Pulse waveform and parameters are shown in the figure

Pulse parameter definition

Pulse amplitude Um: the value of the pulse wave from bottom to top;

Pulse rise time tr: time elapsed after the pulse wave rises from 10% Um to 90% Um;

Pulse fall time tr: the time it takes for the pulse to fall from 90% Um to 10 Um;

Pulse width tp, tpa, tpb: the duration of the pulse. There are three definitions: the time interval tpa when the pulse front and trailing edges are equal to 50% Um; the time interval tp when the front and trailing edges are equal to 90% Um; the time interval tpa when the pulse front and trailing edges are equal to 10% Um, Also known as the width of the bottom of the pulse, generally measured as tpa as the pulse width, tpa as Ï„;

Flat top landing â–³ Um: The top of the actual rectangular pulse can not remain straight, but inclined to fall shape, called the flat top drop â–³ Um;

On the rushed δ: the rising edge of the pulse exceeds the flat top value Um presented above the protruding part, known as the overshoot δ;

Undershoot d: pulse below the bottom of the drop below the outstanding part of the presentation, known as undershoot d;

Pulse repetition period Tr: time interval between two adjacent pulses, called the pulse repetition period Tr, the pulse repetition frequency fr = (1/Tr);

The pulse duty factor ε: the ratio of the pulse width τ to the repetition period Tr, called the pulse duty factor ε, or "duty cycle";

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