[SFDXA] THE SMOKE THEORY OF ELECTRONICS: - From the QRZ page of N3UTV
Bill
bmarx at bellsouth.net
Mon Feb 14 15:33:18 EST 2022
* THE SMOKE THEORY OF ELECTRONICS:*
I have been engaged in the electronics field for a long time. Over the
years, I have come to the conclusion that all electronic gear
really__*_works off of SMOKE_. (READ ON!);*
Above: Renowned *Smoke Theorist*
studying the issue in labs.
The theory goes like this. *SMOKE*...this stuff circulates within all of
the wires and electronic components within a system, and remains
harmless and invisible to the user and harmless to the system unless it
can find an avenue of escape from the wires or components within the
equipment. I can remember in my early days in college, as my classmates
and I worked in the the electronics lab putting together various
circuits, that occasionally, someone would get it wrong. They
would accidentally do something like reverse-connect
large electrolytic capacitors and apply power to the circuit. We would
hear a loud bang and then you would see.... you guessed
it......*SMOKE!!! * *SOMEONE LET THE SMOKE OUT OF THE CIRCUIT! *I also
recall years later, after I was employed as an young engineer with a
transit agency, that a certain transit ticket vending machine began to
let smoke out of its self, creating a hazard to the general public.
The device was found to have two wires chaffing against each
other that allowed the *SMOKE* to escape out of the
electronic circuitry. Trust me......(and this is what we
conclude).......As far as electronic gear is concerned, *SMOKE IS YOUR
FRIEND!.* Our devices are full of it. The secret is _*NEVER LET THE
SMOKE ESCAPE FROM THE WIRES IN YOUR GEAR*._ If it does, your gear will
never be the same.. *k_eep THE SMOKE IN THE WIRES!!!_ DO THIS AT ALL
COST!!!.* Do not let it escape from coils, capacitors, IC's bi-polars,
diodes, etc. Once the SMOKE gets out of your circuits, all is lost.
There is simply no way to put it back in. Keep it contained. We say
again.........*KEEP THE SMOKE IN THE WIRES!*! *(KTSITW).*
Here are some pictures of what things look like if the SMOKE gets
out the wires. If any of your equipment looks like this _YOU PROBABLY
HAVE A SMOKE LEAK!!!_
*ABOVE: SMOKE WAS ALLOWED TO SEEP OUT OF THIS HV CIRCUIT.*
*BELOW LEFT; THE SMOKE GOT OUT OF THIS CIRCUIT. IT IS UNCLEAR WHY THE
OWNER LET IT OUT. **BELOW RIGHT: THE OWNER OBVIOUSLY WATCHED WITH
DISMAY AFTER HE ALLOWED THE SMOKE OUT OF THE ELECTROLYTIC CAPACITOR
PICTURED. DON'T do this! **IT IS NOT A GOOD THING TO LET THE SMOKE
OUT. IT NEEDS TO STAY WITHIN YOUR CIRCUITRY. AS LONG AS THE SMOKE
STAYS WITHIN THE WIRES, ALL IS OK.*
*Someone let the SMOKE out of this resistor and look what happened!*
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/sfdxa/attachments/20220214/d257035d/attachment.html>
More information about the SFDXA
mailing list