Another Capacitor ID ?

[ReRibbon]

Hello, I'm recapping an older mixer and all the stuff inside looks to be original.  The only labeled caps inside were Philips brand. They are the dark blue ones.
I did some research and found that the orange ones are Sprague. The rest of them, however, I cannot find any information on.
Does anyone recognize the purple caps?

Thanks in advance.

 

[ruairioflaherty]

It doesn't matter what brand they are, all you need is a hi quality equivalent replacement.  Regardless of what was in there I'd probably replace them with either Panasonic or Nichicon electrolytics - known brands. 

Keep the value the same, the voltage rating the same or a little higher if necessary, match footprints and look for 105C caps if possible for longevity.

 

[ReRibbon]

Thanks for your reply. The caps that I've ordered are Nichicon, UCC, and Vishay/BC. All of these are 105 degree 5000 hour caps with the exception of the Nichicon. I ordered the KZ series of those. Even though these are rated at 85 degrees 1000 hours, they have many great reviews for sonic characteristics.

I'm really trying to ID the purple caps so I can make a record of what the original parts were.

 

[Andy Peters]

I ordered the KZ series of those. Even though these are rated at 85 degrees 1000 hours, they have many great reviews for sonic characteristics.

Point us to those reviews. Are those caps used as bulk supply bypassing?

I'm really trying to ID the purple caps so I can make a record of what the original parts were.

The original parts were whatever the manufacturer was able to buy when the thing was in production.

 

[ReRibbon]

Here's a thing about the Nichicon FG (Fine Gold) stuff. It's in an article about the BLA Apollo mod.

http://gearautopsy.com/bla-finally-lets-the-lion-out-of-uas-apollo/

I've owned and used BLA a Signature 002, and it sounds really good. I'm thinking if it's good enough for them, then,....
Then I started looking stuff up on them. They are from a Nichicon/Muse series. The KZ stuff is supposed to be a step above the FG stuff.... We'll see what they do I guess.

As I am typing this, the capacitors have arrived. Am gonna take a peek.

ok. all is ok. but..., I have a new question. I ordered electrolytic capacitors. one type that showed up, is much smaller than what it's replacing and is labeled "aluminum organic polymer capacitor". It has polarization markings and is mounted the same as what it's replacing. Will this be a conflict to the circuit?
Thanks in advance.

 

[ReRibbon]

I guess it will be ok. Accordingd to this
https://en.wikipedia.org/wiki/Polymer_capacitor

 

[ln76d]

Does anyone recognize the purple caps?

Wiiii!! Another charades

Purple are Matsushita capacitors - now Panasonic.

 

[ReRibbon]

Awesome! Thanks

 

[ln76d]

It's funny how the MATSUSHITA brand name is auto-censored here

 

[JohnRoberts]

Hello, I'm recapping an older mixer and all the stuff inside looks to be original.  The only labeled caps inside were Philips brand. They are the dark blue ones.
I did some research and found that the orange ones are Sprague. The rest of them, however, I cannot find any information on.
Does anyone recognize the purple caps?

Thanks in advance.

They look like panasonic but why do you want to know,,?

Similarly value and rated parts should work just fine.

JR

 

[Andy Peters]

Purple are Matsush*ta capacitors - now Panasonic.

The latter is a brand under the umbrella of the former.

-a

 

[Andy Peters]

ok. all is ok. but..., I have a new question. I ordered electrolytic capacitors. one type that showed up, is much smaller than what it's replacing and is labeled "aluminum organic polymer capacitor". It has polarization markings and is mounted the same as what it's replacing. Will this be a conflict to the circuit?

They are a new(-ish) type of aluminum electrolytic which has a much lower ESR than the standard Al electrolytic.  I am looking at the Nichicon RSS series 47uF/25V 20% cap and its spec is 30 milliohm ESR (at 100 kHz). The Panasonic FC part with the same values specs 400 milliohm.

These guys get use mainly in switch-mode power supplies where you need low ESR. They're more expensive than the standard parts, too. 

Be careful if you use them as the output cap for a low-dropout linear regulator; some of those parts need a minimum ESR to be stable. (That's why you'll see some LDO data sheets which claim that it is "stable with ceramic output caps," because a ceramic cap has an ESR much lower than an electrolytic. For other LDOs with a minimum ESR requirement, it's easy enough to add a low-value resistor in series with the cap to ensure stability.)

As to how they sound? I have no idea.

 

[ReRibbon]

Thank you all for the thoughts.
There are two of them per channel (100uf 16v).This is the exact rating of the orange colored Sprague it is supposed to replace. Its' size is about 1/3 of the Sprague. One is located / connected to the T Feed/Off/+48 Vokts switch. That should be a cool place for it since these are apparently  used for powersection more often than not.
The second one positive goes in between pin 2 of the opamp of the gain control and lug 1 of the gain pot. The negative side leg goes to a resistor then to the mic/line  switch.

This might be a good place to try these ?

 

[ReRibbon]

Better pic

 

[JohnRoberts]

Purple are Matsush*ta capacitors - now Panasonic.

The latter is a brand under the umbrella of the former.

-a

Yup same exact company... but americanized brand to not scare the Gaigin.

Matshusita licensed the BBD technology from Phillips in the early '70s so my first delay line kit used Panasonic BBD.

JR

 

[ReRibbon]

I ordered the KZ series of those. Even though these are rated at 85 degrees 1000 hours, they have many great reviews for sonic characteristics.

Point us to those reviews. Are those caps used as bulk supply bypassing?


I don't know what bulk supply bypassing is. Please explain?

 

[ln76d]

Purple are Matsush*ta capacitors - now Panasonic.

The latter is a brand under the umbrella of the former.

-a

Yup same exact company... but americanized brand to not scare the Gaigin.

Matshusita licensed the BBD technology from Phillips in the early '70s so my first delay line kit used Panasonic BBD.

JR

I  had in mind the brand of capacitors, but my mistake, they weren't sold as matsushita but as panasonic
I was suggested by old logo on a cap
Even now panasonic doesn't have the brand name on a capacitor,  only M in square  - from matsushita. It's funny because from a few years company name is Panasonic corporation.

 

[JohnRoberts]

I ordered the KZ series of those. Even though these are rated at 85 degrees 1000 hours, they have many great reviews for sonic characteristics.

Point us to those reviews. Are those caps used as bulk supply bypassing?


I don't know what bulk supply bypassing is. Please explain?

Power supply bypassing.. caps connected directly across the PS rails to ground...

JR

 

[Andy Peters]

I don't know what bulk supply bypassing is. Please explain?

Imagine a system with a power supply on one board and the rest of the circuitry on another. There is some amount of inductance on the wires connecting the two boards. When the main board needs to pull current from the supply, it has to do so through that inductance, which can hurt transient response.

One solution is a bulk bypass cap on that main board. It is charged by the power supply, and acts as basically a battery. When the circuit needs to pull current from the supply, it pulls it from the cap.

Now, a cap's charge and discharge times are a function of the capacitance, so how fast it can respond to a circuit should be easy to figure out. And this is why you see small (100 nF) bypass caps located at a chip's power-supply pins: the smaller values are faster.

-a

 

[PRR]

>> Matsush*ta capacitors - now Panasonic.
> The latter is a brand under the umbrella of the former.

Matsushita was founded in 1918 by Konosuke Matsushita, to make lamp sockets. They were marketed under the brand National (not the same as the USA National Radio Company). In WWII and post-war the company branched into many fields.

In the late 1950s (1957??) they began using the Panasonic brand on speakers and other hi-fi gear. The first Panasonic product *may* have been a cone loudspeaker with a sphere mounted in the center for better dispersion (Pan-a-Sonic).

They have used, and been sold-as, many other names. Technics was a high-end hi-fi brand. They partner with JVC, and bought Sanyo.

Konosuke Matsushita is known as "the god of management". Konosuke stepped back in favor of his son-in-law in 1961, retired in 1973, went on to write many popular books and founded a management school. Left this world at the age of 94.

Matsushita always had an image problem because his good Japanese name contains a word which is rude in English. It is also too-much Japanese for most non-Japanese speakers (contrast with "Honda" which rolls off the american tongue). In 2008, after consulting with the family, the company changed its name, the whole works, to Panasonic.