Transient-voltage-suppression (TVS) diodes to protect IO Pins

[MrAl]

Hi,

Yes it's another case of the forum etiquette police (ha ha).
More talk about reviving an old thread issues than talk about what the main subject matter is about.

I see this on other forums too.  OH MY GOD, SOMEONE POSTED IN AN OLD THREAD!!   OH NO! WE ARE ALL DOOMED!!  GOD HELP US ALL !!  THIS HAS BEEN THE 10th OCCURANCE NOW OVER 10000 THEADS, UP FROM 9 OVER THE PAST 2 YEARS, THAT'S 0.1 PERCENT !! WHAT IS THIS WORLD COMING TOO??? OH NOOOOOOOOO...WE HAVE TO FIX THIS BEFORE IT'S TOO LATE!!

ha ha ha ha ha ... etc., etc., i could go on and on with this 

I see some forums just posting a note.  I suppose that's ok.  They just tell the user to think about it.
I do suppose it may sound odd when someone says in year 2014 that they needed a transistor replacement, then in year 2024 someone replies and says, "Oh yeah you can use 2N2222A instead".  That's a little late i guess.  It might be different if they said, "Well transistor substitutions can be found on the manufacturers website", which is for the more general audience.  Or maybe, "Anyone that needs this replacement can try the 2N2222A".  So, a reply directly to the ancient user post person seems odd, but not if it is in the general sense.

I should note that in this particular case i was interested to read about the different methods for input protection, which is something i am always interested in no matter what year it happens to be in.  I like to read about different, hopefully new methods.

[T3sl4co1l]

The main cause is, because the thread has left peoples' memories, no one remembers that it's all more-or-less settled, that the OP or respondents likely aren't even around anymore, etc.

In other words, people are annoyed by getting their ignorance shown up.  Or negligence at not checking the dates.

No one would ever admit that that's the reason, rather blaming it on the causative agent.  But you have to admit that's an annoying experience.

Tim

[David Hess]

Basically in an ideal world the best of the forum would be curated into a wiki. I think Dave started one, I am not sure what happened.

That would be an awful lot of work.  Before that I would implement threading.

[Simon]

Basically in an ideal world the best of the forum would be curated into a wiki. I think Dave started one, I am not sure what happened.

That would be an awful lot of work.  Before that I would implement threading.

The essence of the person bumping it was to keep the good information available. Well if that was simply put on a page under TVS diodes then it would be there forever. Google does a good job of finding forum pages even a decade later.

[David Hess]

The essence of the person bumping it was to keep the good information available. Well if that was simply put on a page under TVS diodes then it would be there forever. Google does a good job of finding forum pages even a decade later.

Google does a worse job as time goes on and politically incorrect pages get lost deliberately.

[MrAl]

The main cause is, because the thread has left peoples' memories, no one remembers that it's all more-or-less settled, that the OP or respondents likely aren't even around anymore, etc.

In other words, people are annoyed by getting their ignorance shown up.  Or negligence at not checking the dates.

No one would ever admit that that's the reason, rather blaming it on the causative agent.  But you have to admit that's an annoying experience.

Tim

Hi Tim,

Pros and Cons,
Cons and Pros,
Post it again, then
Touch your toes.
(chuckle)

I haven't written a poem in some 15 years or more.

[aabill]

Smokey

I (amongst others I am sure) benefited from your bumping without which I would not have seen the excellent educational content from Tim which is relevant to my current project.

Thank you.

[Smokey]

Smokey

I (amongst others I am sure) benefited from your bumping without which I would not have seen the excellent educational content from Tim which is relevant to my current project.

Thank you.

OMG!! WTF!!  Why are you bumping this old thread!!!!  It's making the "post a picture of your cat!" thread not be on the first page!!
ha! ... I kid... I kid... everyone relax

[David Hess]

The main cause is, because the thread has left peoples' memories, no one remembers that it's all more-or-less settled, that the OP or respondents likely aren't even around anymore, etc.

This year I started work on repairing a Tektronix DM501A multimeter.  The high impedance multiplexor and buffer in the ADC chipset has high input leakage current, which is a common failure.  So I did an internet search and it ends up that someone designed a similar repair many years ago ... me.  I did the design work on a repair to replace the input multiplexor many years ago while helping someone on the Tektronix email list and had forgotten about it.