Activity for mohammadsdtmndâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Edit | Post #291295 |
Post edited: |
— | 7 months ago |
| Edit | Post #291295 |
Post edited: |
— | 7 months ago |
| Comment | Post #291295 |
Hi @#52987 Your comment has been applied. I hope the modifications to being enough. (more) |
— | 7 months ago |
| Edit | Post #291295 |
Post edited: Andy aka comment applyed |
— | 7 months ago |
| Edit | Post #291295 |
Post edited: |
— | 7 months ago |
| Edit | Post #291295 | Initial revision | — | 7 months ago |
| Question | — |
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): LN13+layout There I have some questions: 1) Why Vcc has reached to near the input, The only reason I can see is to achi... (more) |
— | 7 months ago |
| Comment | Post #290863 |
O_O
-_-
O_O
-_-
OMG, I thought, I was asked!? Though left unanswered! You didn't, and didn't allow anyonelse to answer. And maybe you're thinking you're done an epic thing. But maybe: "The customer is always right" (more) |
— | 9 months ago |
| Edit | Post #290863 |
Post edited: |
— | 9 months ago |
| Edit | Post #290863 |
Post edited: |
— | 9 months ago |
| Comment | Post #290863 |
I've added IC's pins. I hope that everything being crystal clear now. (more) |
— | 9 months ago |
| Edit | Post #290863 |
Post edited: more schmatic clarification |
— | 9 months ago |
| Edit | Post #290863 |
Post edited: |
— | 9 months ago |
| Edit | Post #290863 |
Post edited: |
— | 9 months ago |
| Edit | Post #290863 |
Post edited: |
— | 9 months ago |
| Edit | Post #290863 | Initial revision | — | 9 months ago |
| Question | — |
Implementing local ground theory on PCB power distribution 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 signals created on gnd pin or decoupling pins directly through via to gnd plane, he suggested avoid it t... (more) |
— | 9 months ago |
| Comment | Post #288784 |
The local gnd concept you've introduced, does not require top layer gnp polygon, doesn't it? We should implement that with interconnected trace with strategy like star. Since creating gnd polygon with single via to main gnd can act like patch antenna and or coupling between adjacent signals, Am I got... (more) |
— | 9 months ago |
| Comment | Post #288036 |
THX alot, Could you please explain more? (more) |
— | over 1 year ago |
| Edit | Post #288067 | Initial revision | — | over 1 year ago |
| Answer | — |
A: What is the role of master clock speed on DAC Question 4 solved: The datasheet lacks the information I've copied from PCM5122: (more) |
— | over 1 year ago |
| Comment | Post #288006 |
could you please explain more? (more) |
— | over 1 year ago |
| Edit | Post #288001 |
Post edited: extending question |
— | over 1 year ago |
| Comment | Post #288006 |
How it doesn't require MCK despite the big table I've appended from datasheet? (more) |
— | over 1 year ago |
| Comment | Post #288006 |
How it doesn't require MCK despite the big table I've appended from datasheet? (more) |
— | over 1 year ago |
| Edit | Post #288001 |
Post edited: |
— | over 1 year ago |
| Edit | Post #288001 |
Post edited: |
— | over 1 year ago |
| Edit | Post #288001 |
Post edited: |
— | over 1 year ago |
| Edit | Post #288001 | Initial revision | — | over 1 year ago |
| Question | — |
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 need master clock? I think simply some devices need clock to work, this master clock can provide cloc... (more) |
— | over 1 year ago |
| Comment | Post #287737 |
It gives detail of answer with example of specific welding rod and type wich is really exciting. Thoough I think it can be better, it's incomplete, I need time to think more and comment about it's lacks. (more) |
— | over 1 year ago |
| Comment | Post #287726 |
It explains from above picture of answer verry well. (more) |
— | over 1 year ago |
| Comment | Post #287727 |
Perfect, thanks. (more) |
— | over 1 year ago |
| Edit | Post #287723 |
Post edited: |
— | almost 2 years ago |
| Edit | Post #287723 | Initial revision | — | almost 2 years ago |
| Question | — |
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 need just two factor: 1. Noise contribution of OpAmp. 2. Distrtion contribution of OpAmp. (mostly s... (more) |
— | almost 2 years ago |
| Edit | Post #287722 |
Post edited: |
— | almost 2 years ago |
| Edit | Post #287722 | Initial revision | — | almost 2 years ago |
| Question | — |
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? Any i[]()dea? (more) |
— | almost 2 years ago |
| Edit | Post #287555 | Initial revision | — | almost 2 years ago |
| Answer | — |
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 changes. (more) |
— | almost 2 years ago |
| Edit | Post #287554 | Post undeleted | — | almost 2 years ago |
| Edit | Post #287554 | Post deleted | — | almost 2 years ago |
| Comment | Post #287554 |
I've changed now. Two are the same. When channel 2 is free runnig also the pulses reduces to 5. But buy using channel two being FS the pulses of channel 1 became 6 equal to rsing edges of FS on channel 2. Pulse is triggered by FS rising edge in MCU. (more) |
— | almost 2 years ago |
| Edit | Post #287554 |
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— | almost 2 years ago |
| Edit | Post #287554 |
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— | almost 2 years ago |
| Edit | Post #287554 |
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— | almost 2 years ago |
| Edit | Post #287554 |
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— | almost 2 years ago |
| Edit | Post #287554 |
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— | almost 2 years ago |
| Edit | Post #287554 |
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— | almost 2 years ago |