In electronic technology, the pulse signal is based on a certain voltage amplitudetime intervalContinuously sent.The time interval between pulse signals is called period;The number of pulses generated in a unit time (such as 1 second) is called frequency.
Frequency is a measurement name that describes the number of pulses that appear in the unit time of periodic cyclic signals (including pulse signals);Frequency standardUnit of measurementIs Hz.On the computerSystem clockIs a typical frequency that is quite accurate and stablePulse signal generator。Frequency in mathematicsexpressionIs represented by "f", and its corresponding units are: Hz (Hz), kHz（Kilohertz）、MHz（Megahertz）、GHz（Gih）。Its 1GHz=1000MHz, 1MHz=1000kHz, 1kHz=1000Hz.To calculate the period of a pulse signalTime unitAnd the corresponding conversion relations are: s (seconds), ms（millisecond）、μs（Microsecond）、ns（nanosecond）, where 1s=1000ms, 1ms=1000 μ s, 1 μ s=1000ns.
principle
Announce
edit
The so-called pulse signal is shown inPlane coordinateOn the top is a curve with countless breakpoints, that is to say, the limit of points does not exist in some places of periodicity, such asSawtooth wave, also used in computersdigital circuit Signal 0,1 of.Pulse signal, that is, a signal like pulse beating. Compared with DC, intermittent signal, if described by water flow, DC is to keep the tap open and water flowing, and pulse is to keep the tap on and off to form water pulse.
technical standard
Announce
edit
Pulse signal
When the flashlight is turned on, the light is on. This is DC. When the light keeps on and off, a pulse is formed. The speed of switching isPulse frequencyThe height of.
