Measuring "payload" skew across network

Started by Don Y in sci.electronics.design4 months ago 17 replies

I have an application that distributes audio among multiple, distant nodes (emitters/speakers) over an ethernet. I control the relative timing...

I have an application that distributes audio among multiple, distant nodes (emitters/speakers) over an ethernet. I control the relative timing (phasing) of the signals from each emitter -- either in synchronism or leading/lagging by specific dynamic amounts (which can be on the order of many ms). To date, I've been measuring this skew in the time domain by emitting a plosive burst whose s...


Signal generator in Microcap 12

Started by Stachu Chebel in sci.electronics.design4 months ago 5 replies

Hi, I need to define a signal generator (voltage) of a heart beat. I have one heart beat cycle in text file format (time voltage): t1 v1 t2...

Hi, I need to define a signal generator (voltage) of a heart beat. I have one heart beat cycle in text file format (time voltage): t1 v1 t2 v2 . . tn vn Could anybody help me to define such a generator in Microcap 12?


OT.. Covid Vaccine??

Started by Dean Hoffman in sci.electronics.design4 months ago 23 replies

Some good news maybe.

Some good news maybe.


Exploding CDs

Started by Jeff Urban in sci.electronics.design4 months ago 11 replies

They simply explode for no reason apparently. Of course there is a reason but what is it ? I am thinking about polymers outgassing inside...

They simply explode for no reason apparently. Of course there is a reason but what is it ? I am thinking about polymers outgassing inside corroding the aluminum and making it corrode. That for most metals makes them lose mass, which has to go somewhere. From what I hear it is when they are handled, but not abused. They have not been sitting out in the sun for days. This com


OT: Dr. Fauci flat-out REFUTES claims in Woodward book

Started by Flyguy in sci.electronics.design4 months ago 17 replies

Comments in Woodward's book attributed to him by "others" NEVER happened according to Fauci. This just underscores the problem with unnamed...

Comments in Woodward's book attributed to him by "others" NEVER happened according to Fauci. This just underscores the problem with unnamed (secret) sources. https://www.foxnews.com/politics/dr-fauci-trump-woodward-downplay-covid-19


I installed a GCFI, it has no output.

Started by amdx in sci.electronics.design4 months ago 11 replies

I purchased GFNT2-3W GCFI from Amazon. (Leviton)  I have 124V between the screw where the white wire goes and the screw where the black wire...

I purchased GFNT2-3W GCFI from Amazon. (Leviton)  I have 124V between the screw where the white wire goes and the screw where the black wire goes. I have the ground wire connected. I have no voltage on the outlets. The GFCI show no sign of being tripped. Resetting does nothing. I did a continuity test on the remaining two GCFIs, I have no continuity between Hot and the outlet pin or N a...


Are small SMD resistors factory-tested one by one?

Started by blisca in sci.electronics.design4 months ago 19 replies

I wonder if the accuracy is granted by the process itself,by testing samples,or automatic test one by one; the last would be amazing in case of...

I wonder if the accuracy is granted by the process itself,by testing samples,or automatic test one by one; the last would be amazing in case of very cheap and very small resistors(or other passive components).The same question could be extended to semiconductors,despite test on wafer is probably easier, by mechanical point of view,what about the sealed component? Thanks and forgive improper use ...


Removing DC offset from ADC Buffer

Started by Gold_Spark in sci.electronics.design4 months ago 54 replies

I'm using a STM32 Cortex M0+ to read an AC signal from a CT. I'm sampling at 6kHz and storing 400 samples. The signal has a DC bias equal to Vcc/2...

I'm using a STM32 Cortex M0+ to read an AC signal from a CT. I'm sampling at 6kHz and storing 400 samples. The signal has a DC bias equal to Vcc/2 = 1.65V. In the digital domain this is 2048. In hardware this DC value is very precise, but when sampling it, it varies from 2044 to 2052 inside the buffer. Now if I want to do RMS in that set of data, I need to find a way to deal with


OT: People Proclaim the Right to Spread the Virus, but We Don't Have a Right to TikTok

Started by Ricketty C in sci.electronics.design4 months ago 29 replies

Tell me this country is not so messed up! How again is TikTok a threat to national security??? Everything TikTok does is also done by...

Tell me this country is not so messed up! How again is TikTok a threat to national security??? Everything TikTok does is also done by Google, Yahoo and many other web sites. It is claimed that TikTok gives the information mined to the Chinese government. Really? PRC wants to know what clothes I'm buying and what movies I watch??? Is this the height of paranoia???


Hi-temp LCD

Started by Don Y in sci.electronics.design4 months ago 6 replies

I've only once spec'd an LCD display in a product. I recall lots of different issues, criteria (transflexive, transmissive, high...

I've only once spec'd an LCD display in a product. I recall lots of different issues, criteria (transflexive, transmissive, high temperature, etc.). But, have largely forgotten most of those issues (IIRC, transmissive/transflexive/reflexive have to do with the treatment of the back of the display) I recall response time was sensitive to excitation voltage and temperature. I don't recall ...


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