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THD - Total Harmonic Distortion
Рет қаралды 8,859
Күн бұрынGregory explains what is THD - Total Harmonic Distortion, using the circuit from the last video.
An oscilloscope is used for a THD measurement, and the limitations are shown, as the harmonic distortion of the oscilloscope front-end masks the oscillator THD.
THD is a measurement of distortion, used as the main figure of merit in audio applications, where the non-linear behavior is characterized using the power at the harmonics of the fundamental signal.
Watch my video about Nonlinearity and Distortion
• Distortion and Nonline...
Watch my explanation about the Wien Bridge Oscillator
• Wien Bridge Oscillator...
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00:18 - Oscillator prototype
01:12 - Circuit behavior
02:12 - Total harmonic distortion
07:10 - THD measurement
07:56 - Measuring distortion with oscilloscope
11:18 - Final circuit details
@AllElectronicsChannel Жыл бұрын
Support the channel becoming a Patron patreon.com/allelectronics
@pstonard Жыл бұрын
Another excellent episode on your electronics journey, Gregory! Bob Pease and I both worked at National Semiconductor, many years ago. As you know, Bob was "A Character" as we say in English. One day he and I had a foot race through the Engineering Department in building "C" It was a tie, I think, but a lot of our co-workers were startled and popping their heads up over the cubicle walls! My best memory of the great man!
@umar5138 11 ай бұрын
I'm in my 4th year in Electrical Engineering. Thankyou so much sir for this splendid video.
@AllElectronicsChannel 11 ай бұрын
You are most welcome!
@ivolol 9 ай бұрын
Would love to explore what is giving extra THD in the circuit
@gleisonaraujo7216 Жыл бұрын
I love the new format.
@AllElectronicsChannel Жыл бұрын
🙏🏼🙏🏼🙏🏼
@TheMrfire82 Жыл бұрын
You are the best of all electronic. Brazuca representando.
@AllElectronicsChannel Жыл бұрын
Hahahaha thanks Leandro!!
@thomasmaughan4798 Жыл бұрын
Nice oscilloscope! Rohde and Schwarz.
@NoilsonCaio Жыл бұрын
Well done
@richarddzioba9148 Жыл бұрын
Why does the FFT display "baseline" slant and not for example, just straight across the bottom of the scope display?
@AllElectronicsChannel Жыл бұрын
Because noise is random.. the line would be static with an infinite average.
@leomartihart Жыл бұрын
Dead bug mounting!! hahahaha. Good
@AllElectronicsChannel Жыл бұрын
😂😂😂
@JoseCarlos-xz3bz Жыл бұрын
Hello Gregory how are you? I would like to ask you a question. If I apply a square wave generated by a function generator to the input of a 31-band equalizer, can I separate them by frequency band? I look forward to your help. I wish you much success always. I'm your fan.!!
@AllElectronicsChannel Жыл бұрын
Hi Jose, you could! The audio EQ will not roll off fast enough to create a clean sine at the output. You probably will be able to change the shape of the square wave enhancing/attenuating the harmonic amplitude. Thanks!
@JoseCarlos-xz3bz Жыл бұрын
@@AllElectronicsChannel Gregory understood, I have a quality function generator, if I generate a square wave that is formed by an infinity of different frequencies, I will be able to separate them in each frequency band in the equalizer that has 31 bands. This separate signal will go to a vibration table and then excite a 100m/V G accelerometer which will undergo the FFT math treatment. Man, I'm so honored by your great kindness in coming here to help me. Thank you very much!
@JoseCarlos-xz3bz Жыл бұрын
@@AllElectronicsChannel you as a great connoisseur of instruments, do you have any references for the 31-band equalizer Behringer FBQ3102HD?
@AllElectronicsChannel Жыл бұрын
Hi Jose, the square wave is composed of only odd harmonics, with decreasing amplitude. You would be in better place with a multi tone signal gen
@JoseCarlos-xz3bz Жыл бұрын
@@AllElectronicsChannel If I apply a fundamental frequency of 30 Hz to a square wave, wouldn't the second harmonic of 2 x 30, 4 x 30, 6 x 30... be visible in the equalizer output? I want to analyze these signals after Equalizer in FFT
@apollorobb Жыл бұрын
What is a sirqkwit
@AllElectronicsChannel Жыл бұрын
😏😏
@shaunhammer4688 Жыл бұрын
What Arduino simulator is this??? I'd love to know it looks the bomb I want it
@AllElectronicsChannel Жыл бұрын
Arduino simulator ?
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