Peace, mercy and blessings of God Welcome to your channel abdelraouf89 on youtube
Today we will talk about zero crossing
So what is ZERO CROSSIN?
ZERO CROSSING Is an electrical term
It is the point at which the function changes its signal
This means that the positive sign changes into negative sign and this is very clear in sin wave
as shown in fig up in positive and down in negative
The point of contact with the x-axis is the zero crossing point
That is, the point at which there is no change in the function
Find out how many times the of ZERO CROSSING for the function It is used in mathematics, electronics,Acoustics, and image processing
For example in electronics We know that in the alternating current the zero crossing point is the point where there is no electrical current, either in the case of the sinusoidal wave or any other waveform
Zero crossing occurs twice per cycle
There is a device to detect the number of times the function reaches the zero crossing per cycle
If the wave several cycles
Through it, I can know how many times I get to zero
Zero transit is very important in AC circuits that send digital data (digital circuits) such as modems and home control systems X10
And digital command control systems such as Lionel and other AC models used for data transmission
Also, by knowing the zero crossing number, the amount of speech is known and used in the audio processing
For example, the microphones are used zero-crossing for audio processing
It does not depend on the sinusoidal wave, but any wave has a zero crossing which it can control the sound
What is very important to us is when switching or connecting power, it is very good to be separated and connected at zero crossing
where at this point there is no current It does not affect the machine
For example, when the transformer is switched on , it is damaged and one of the reasons for this may be the connection or separation at the point other than zero crossing
and the CB which found is not designed to work in zero crossing point
and this is very important for circuit breakers which used with transformers
where the best time to connect and disconnect is at zero crossing point
where some times when you connect transformers are damaged because when you connect or disconnect it happened far than zero crossing point
the conclusion is when you wanna make any change in the circuit you can do it at zero crossing
also used in image processing
one program like photo shop the most famous program in image modifications use zero crossing in this process
it uses the summation of pixels to gather to do its modifications
if you get one small photo from the internet, the program make auto modification for the images
also photo filters like that used in instgram
like golden photos or etc
this is also using zero crossing
it uses some programmable methods by java script and other ways
and making effects also
this was our video to day if you get benefits pleas like ,share and subscribe
For more infomation >> 5 Tricks to know if your partner is unfaithful without checking his cell phone - Duration: 1:57. 
For more infomation >> Is it a function? - Duration: 7:20. 
For more infomation >> Lexus IS 300h Hybrid Business Line - Duration: 1:13. 
Không có nhận xét nào:
Đăng nhận xét