Midiverb ii issues?

[Arfa Daily]

<snip>

Interesting. I wonder why the difference ? A few years back - say 10 or
so -
I would have said that I saw as many short circuit electrolytics, as any
other problems with them such as open circuit, low value, leaking,
bulging
etc. Now though, short circuit is comparatively rare. As to cathode caps,
I
think that I have probably seen more that were open circuit than short.
Used
to be a big problem in the frame output and audio output stages of TV
sets,
back in the day ...


Sprague had high standards, but you paid for it. Japanese crap hit
the US hard in the early '70s and you saw a lot more failed
electrolytics. Sprague started shutting down their plants as demand for
high quality electrolytics dropped. I still have a roll of aluminized
mylar from the Orlando plant, along with a partial roll of 'component
lead' they used on their famous 'Orange Drop' capacitors.

Now there's another interesting thing. I wouldn't have thought that Orlando,
given the extremes of humidity that it suffers, would have been a very good
place for manufacturing capacitors, or was it just 'wet' electrolytics that
were made there ? Or was the whole plant environment-controlled ? Guess you
wouldn't be able to afford to do that these days ...

Arfa

 

[Michael A. Terrell]

Arfa Daily wrote:

snip


Interesting. I wonder why the difference ? A few years back - say 10 or
so -
I would have said that I saw as many short circuit electrolytics, as any
other problems with them such as open circuit, low value, leaking,
bulging
etc. Now though, short circuit is comparatively rare. As to cathode caps,
I
think that I have probably seen more that were open circuit than short.
Used
to be a big problem in the frame output and audio output stages of TV
sets,
back in the day ...


Sprague had high standards, but you paid for it. Japanese crap hit
the US hard in the early '70s and you saw a lot more failed
electrolytics. Sprague started shutting down their plants as demand for
high quality electrolytics dropped. I still have a roll of aluminized
mylar from the Orlando plant, along with a partial roll of 'component
lead' they used on their famous 'Orange Drop' capacitors.

Now there's another interesting thing. I wouldn't have thought that Orlando,
given the extremes of humidity that it suffers, would have been a very good
place for manufacturing capacitors, or was it just 'wet' electrolytics that
were made there ? Or was the whole plant environment-controlled ? Guess you
wouldn't be able to afford to do that these days ...

Air conditioned factories were, and are common for electronics in the
US. When you consider the time it takes to wind a mylar capacitor and
dip it into epoxy, there isn't much time to adsorb moisture. If the
humidity is too low you will build up a static charge on the mylar, then
it will to stick to the rollers in the handling and winding machines.

The Microdyne plant where I worked was fully air conditioned, and it
was about two hours north of Orlando.


--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.

 

[Meat Plow]

On Thu, 29 Jul 2010 09:28:33 +0100, Arfa Daily wrote:

snip


Interesting. I wonder why the difference ? A few years back - say 10
or so -
I would have said that I saw as many short circuit electrolytics, as
any other problems with them such as open circuit, low value, leaking,
bulging
etc. Now though, short circuit is comparatively rare. As to cathode
caps, I
think that I have probably seen more that were open circuit than
short. Used
to be a big problem in the frame output and audio output stages of TV
sets,
back in the day ...


Sprague had high standards, but you paid for it. Japanese crap hit
the US hard in the early '70s and you saw a lot more failed
electrolytics. Sprague started shutting down their plants as demand
for high quality electrolytics dropped. I still have a roll of
aluminized mylar from the Orlando plant, along with a partial roll of
'component lead' they used on their famous 'Orange Drop' capacitors.

Now there's another interesting thing. I wouldn't have thought that
Orlando, given the extremes of humidity that it suffers, would have been
a very good place for manufacturing capacitors, or was it just 'wet'
electrolytics that were made there ? Or was the whole plant
environment-controlled ? Guess you wouldn't be able to afford to do that
these days ...

Arfa

I don't suppose a plant manufacturing capacitors has to be very big. At
least the assembly building. It's easy enough to imagine a climate
controlled assembly room. And Mike is right about the history of
capacitors. I lived through the era when manufacturing stopped giving a
shit about quality over pumping out volumes of crap.

 

[Michael A. Terrell]

Meat Plow wrote:

On Thu, 29 Jul 2010 09:28:33 +0100, Arfa Daily wrote:

snip


Interesting. I wonder why the difference ? A few years back - say 10
or so -
I would have said that I saw as many short circuit electrolytics, as
any other problems with them such as open circuit, low value, leaking,
bulging
etc. Now though, short circuit is comparatively rare. As to cathode
caps, I
think that I have probably seen more that were open circuit than
short. Used
to be a big problem in the frame output and audio output stages of TV
sets,
back in the day ...


Sprague had high standards, but you paid for it. Japanese crap hit
the US hard in the early '70s and you saw a lot more failed
electrolytics. Sprague started shutting down their plants as demand
for high quality electrolytics dropped. I still have a roll of
aluminized mylar from the Orlando plant, along with a partial roll of
'component lead' they used on their famous 'Orange Drop' capacitors.

Now there's another interesting thing. I wouldn't have thought that
Orlando, given the extremes of humidity that it suffers, would have been
a very good place for manufacturing capacitors, or was it just 'wet'
electrolytics that were made there ? Or was the whole plant
environment-controlled ? Guess you wouldn't be able to afford to do that
these days ...

Arfa

I don't suppose a plant manufacturing capacitors has to be very big. At
least the assembly building. It's easy enough to imagine a climate
controlled assembly room. And Mike is right about the history of
capacitors. I lived through the era when manufacturing stopped giving a
shit about quality over pumping out volumes of crap.

Sprague continued to make them, but most manufacturers had been taken
over by MBA bean counters by then. They were still making high quality
parts, till Vishay bought them.


--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.

 

[El Grillo]

Thanks everyone for your help!

nicholas



On Jul 29, 1:41 pm, "Michael A. Terrell" <mike.terr...@earthlink.net>
wrote:

Meat Plow wrote:

On Thu, 29 Jul 2010 09:28:33 +0100, Arfa Daily wrote:

snip

Interesting. I wonder why the difference ? A few years back - say 10
or so -
I would have said that I saw as many short circuit electrolytics, as
any other problems with them such as open circuit, low value, leaking,
bulging
etc. Now though, short circuit is comparatively rare. As to cathode
caps, I
think that I have probably seen more that were open circuit than
short. Used
to be a big problem in the frame output and audio output stages of TV
sets,
back in the day ...

  Sprague had high standards, but you paid for it.  Japanese crap hit
the US hard in the early '70s and you saw a lot more failed
electrolytics.  Sprague started shutting down their plants as demand
for high quality electrolytics dropped.  I still have a roll of
aluminized mylar from the Orlando plant, along with a partial roll of
'component lead' they used on their famous 'Orange Drop' capacitors.

Now there's another interesting thing. I wouldn't have thought that
Orlando, given the extremes of humidity that it suffers, would have been
a very good place for manufacturing capacitors, or was it just 'wet'
electrolytics that were made there ? Or was the whole plant
environment-controlled ? Guess you wouldn't be able to afford to do that
these days ...

Arfa

I don't suppose a plant manufacturing capacitors has to be very big. At
least the assembly building. It's easy enough to imagine a climate
controlled assembly room. And Mike is right about the history of
capacitors. I lived through the era when manufacturing stopped giving a
shit about quality over pumping out volumes of crap.

   Sprague continued to make them, but most manufacturers had been taken
over by MBA bean counters by then.  They were still making high quality
parts, till Vishay bought them.

--
Anyone wanting to run for any political office in the US should have to
have a DD214, and a honorable discharge.