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Sherlock Ohms

A Revealing Quiet

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Larry M
User Rank
Platinum
Let me guess
Larry M   2/3/2015 5:39:57 PM
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Let me guess. He was raising DTR, wasn't he?

William K.
User Rank
Platinum
But it seemed like a good idea at the time.
William K.   2/3/2015 8:02:15 PM
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Just as is stated, re-utilizing a whole block of code without being aware of exactly everything that it does can lead to problems that are quite a challenge to find..And it was very fortunate indeed that the autor was able to hear the relay click, and a result of experience that he understood what the sound was. An inexperienced person would not have a clue and would never have caught the problem.

Very good detective work, and a great tribute to understanding the system so very well.

Elizabeth M
User Rank
Blogger
Re: But it seemed like a good idea at the time.
Elizabeth M   2/4/2015 7:51:15 AM
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Indeed, William K., it wasn't just the silence that brought this problem to light, but the skills of the engineer that could identify it so quickly. Good sleuthing for sure.

Soldering Gunslinger
User Rank
Iron
Mechanical Relay...
Soldering Gunslinger   2/12/2015 1:50:40 PM
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It is a good thing that a mechanical relay was used in the circuit, an electronic relay would have been silent and the problem wouldn't have been caught!

 

I remain,

 

The Old Soldering Gunslinger

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