Answer by Anthony May for Why does PWM create lots of EMI and signal ground...
I'll spare you the math, but a truly square wave of 50% duty cycle at frequency f1, is effectively made up of the sum of sine-waves starting with the fundamental at frequency f1, plus the odd harmonics...
View ArticleAnswer by hekete for Why does PWM create lots of EMI and signal ground noise?
Any flow of electrons will generate a magnetic field. That field can induce currents into near by conductors. Which is called EMI.PWM (Pulse Width Modulation) sends pulses of current down the...
View ArticleAnswer by analogsystemsrf for Why does PWM create lots of EMI and signal...
Here is one exampleIf you combine Biot_Savart and Faraday Law of Induction, you will get this math to predict voltage induced, from a long straight wire that is in the plane of a rectangular...
View ArticleWhy does PWM create lots of EMI and signal ground noise?
TI had a note to create DAC signals using PWM.http://www.ti.com/lit/ug/tidu027/tidu027.pdfWhereas I also found an article that...
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