mohammadsdtmnd‭

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I hope for all communities to become more empathic and achieve better ability to help each other. to understand each other:

Sorrily similar to this behaviour is also too much in StackExchange too. Maybe this communities are trying to give some guy, a hand, not to bolding their wrongs. Maybe simple dwonvote and comment, why the dwnvote... .

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Q&A Why arc welding does not require high voltage to arc?

I've heard that arc welding is getting done with low voltage. I believe arcing requires high voltage. Then how is arc welding done with about 50 volts? I thought we need kilovolts for arcing. Why? ...

3 answers · posted 1y ago by mohammadsdtmnd‭ · last activity 1y ago by TonyStewart‭

Question voltage current welding

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Q&A Audio OpAmp requirements

As we know audio has high dynamic range. It means 120dB dynamic range of human ear causes to hear 1 million time samaller that highest undistorted accoustic wave. Then I think for high end audio we...

1 answer · posted 1y ago by mohammadsdtmnd‭ · last activity 1y ago by Olin Lathrop‭

Question audio

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Q&A Pulse disappear in digital scope just by looking at different signal in other channel.

The problem was the transient you can see in the first picture, the blue one. When I connect the scope to it, it becomes stabilized. Otherwise it is noisy and because of this the other signal chang...

posted 1y ago by mohammadsdtmnd‭ · edited 9mo ago by Lorenzo Donati‭

Answer

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Q&A What is the role of master clock speed on DAC

In protocol I2S we have 3 signal + one none standard master clock(Mentioined by Olin Lathrop): 1.data 2.lrck/fck (frame synchronizer) 3.bck (bit clock) 4.mck/sck (master clock) Question 1: Why we...

2 answers · posted 1y ago by mohammadsdtmnd‭ · last activity 1y ago by mohammadsdtmnd‭

Question clock audio DAC

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Q&A Pulse disappear in digital scope just by looking at different signal in other channel.

I have a HANTEK 6022BE oscilloscope and I'm monitoring three signals with it: FS (Frame sync clock). Pulse. Transfer complete. I'm using two channels of the scope to monitor a pair of these...

1 answer · posted 1y ago by mohammadsdtmnd‭ · last activity 9mo ago by Lorenzo Donati‭

Question oscilloscope

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Q&A What is the role of master clock speed on DAC

Question 4 solved: The datasheet lacks the information I've copied from PCM5122:

posted 1y ago by mohammadsdtmnd‭

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Q&A LNA layout consideration 1-1000MHz

Mini-circuits LNA PHA-LN13+ has suggested: Eval board Layout Eval Gerber The image took from the Gerber file (3rd ref.) (Though all 3-reference mentioned containing it): There I have som...

0 answers · posted 8d ago by mohammadsdtmnd‭ · edited 21h ago by mohammadsdtmnd‭

Question RF pcb-layout layout

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Q&A Implementing local ground theory on PCB power distribution [closed]

I've tryed to implement a local ground concept told by Olin Latrop here : He have told: (What I've perceived)You should not connect every gnd point instantly to gnd plane, since it can inject HF ...

0 answers · posted 2mo ago by mohammadsdtmnd‭ · closed 2mo ago by Olin Lathrop‭

Question power-supply EMC PCB EMI pcb-layout

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Number of top-level posts		6
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Sum of received votes (up minus down)		4
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