FREQUENCY MODULATION - PART I - BASIC PRINCIPLES

[storaman12]

The best description I have ever seen.

[sudhansumtripathy]

Please upload the frquency modulation part 2 . These are very intresting lecturers

[ivaneduardo747]

They didn't call frequency units Hertz, because Hertz was a German physicists. :P Instead they called them cycles. This was recorded in 1964 and SI was established in 1960.

[TheRealPhoneCall]

NEED: Part 2!!!! :)

[xGSTARxLUKEx]

@TheRealPhoneCall u sad person

[lacerdatech]

It was the best explanation of modulation frequencies that attended today, and in 1964 was given by the dep. Defense USA

[msingletary1984]

I could be wrong but I would say that the microphone doesn't create the electrical signal. Power must be sent to the microphone for the microphone to create distrubances in (this is the signal).

[TheKrazykool809]

@msingletary1984 something called a piezoelectric material is used. this creates electricity when it is compressed or released. when hooked up to a microphone so that sound is turned into mechanical movement these properties can be used to make an electrical signal. no electricity source is needed, however a source is need to power the occilator as you have probably noticed that it has no actual input.

[msingletary1984]

@TheKrazykool809 I knew about them but I hadn't even considered it. Thank you!

[Ctcwired]

@msingletary1984 If it's a condenser microphone that needs phantom power, then yes. Otherwise, it's just amplified to hell by a pre-amp.

[sudhansumtripathy]

old is gold , a beautiful way to understand things, if you have all the electrical videos please upload it.

[elclyde06]

This really help for my report. :)

[ABHIJIT193]

Good illustration ... thanks

[rafafull]

its a good movie, but i dissagre when he talks about the rest frequency and the deviation in FM. The deviation is not about the amplitude of the signal, but the frequency

[anemeka]

@rafafull The amount of Deviation = Amplitude

The rate of Deviation(how fast or slow deviation occurs) = Frequency

Remember : Frequency is measured with TIME; Amplitude is ENERGY

[jfdonnald]

@rafafull You are correct. The example showed amplitude changes in the carrier - or either both of us are misinterpreting the video.

[simplelife1021]

@jfdonnald If you're talking about the part where the audio wave is rotated vertically, it's just showing the direct effect of changes in amplitude in the input audio wave to changes in frequency in the carrier wave. Remember, the carrier's frequency is represented by the black horizontal line, and movement along that line only changes the frequency.

[daDfarSpanTaistheKin]

when will its other parts be posted plz post them..

[sonai4u]

great video...thanks a lot!!!!

[ngovankhoi]

Wonderful! Since 1964, they had so good training way!

[orleomarty]

THANK YOOU FOR THIS VIDEO IT HELPS ME REALLY TO UNDERSTAND!!!