Activity for mohammadsdtmndâ€
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
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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) |
— | 22 days 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) |
— | 3 months 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) |
— | about 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) |
— | about 1 year 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) |
— | over 1 year 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) |
— | over 1 year 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) |
— | over 1 year ago |
| Question | — |
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: 1. FS (Frame sync clock). 2. Pulse. 3. Transfer complete. I'm using two channels of the scope to monitor a pair of these. The problem is when I'm looking at signal 1 (in blue) and 2 (in yellow) I see this: 12... (more) |
— | over 1 year ago |