Callins capacitor?...

D

Don

Guest
Greetings,

Why do Callins capacitors command such a high premium:

https://richelectronics.co.uk/product/callins-300uf-25v-audio-capacitor-vintage-low-esr-ol0382b

What\'s so special about them?

What\'s a good substitute?

Danke,

--
Don, KB7RPU
There was a young lady named Bright Whose speed was far faster than light;
She set out one day In a relative way And returned on the previous night.
 
On 12/11/20 10:13 AM, Don wrote:
> What\'s so special about them?

Nothing. They aren\'t even new, they are surplus.
As PT Barnum\'s competitor said, \"There\'s a sucker born every minute.\"

Just buy new 105F Nichicons from a reliable vendor.

--
\"I am a river to my people.\"
Jeff-1.0
WA6FWi
http:foxsmercantile.com
 
https://nebula.wsimg.com/09077cfb0a4e48e0bbb958b44e95039b?AccessKeyId=1884AA24B5A4B33E3F2B&disposition=0&alloworigin=1

Anything legitimately carrying the Callins name is at least 36 years old.

Peter Wieck
Melrose Park, PA
 
On Fri, 11 Dec 2020 16:13:22 -0000 (UTC), \"Don\" <g@crcomp.net> wrote:

Greetings,

Why do Callins capacitors command such a high premium:

https://richelectronics.co.uk/product/callins-300uf-25v-audio-capacitor-vintage-low-esr-ol0382b

What\'s so special about them?

What\'s a good substitute?

Danke,
Click to expand...

Is that a non-polar electrolytic? Looks like two regular caps potted.

What use is a 300 uF non-polar \'lytic?



--

John Larkin Highland Technology, Inc

The best designs are necessarily accidental.
 
On 11/12/20 16:55, jlarkin@highlandsniptechnology.com wrote:
On Fri, 11 Dec 2020 16:13:22 -0000 (UTC), \"Don\" <g@crcomp.net> wrote:

Greetings,

Why do Callins capacitors command such a high premium:

https://richelectronics.co.uk/product/callins-300uf-25v-audio-capacitor-vintage-low-esr-ol0382b

What\'s so special about them?

What\'s a good substitute?

Danke,

Is that a non-polar electrolytic? Looks like two regular caps potted.

What use is a 300 uF non-polar \'lytic?
Click to expand...

It relieves audiophools of their surplus cash?
 
> What use is a 300 uF non-polar \'lytic?

Mostly speaker crossovers.

https://www.parts-express.com/300uf-100v-electrolytic-non-polarized-crossover-capacitor--027-371

Peter Wieck
Melrose Park, PA
 
jlarkin@highlandsniptechnology.com wrote:

On Fri, 11 Dec 2020 16:13:22 -0000 (UTC), \"Don\" <g@crcomp.net> wrote:

Greetings,

Why do Callins capacitors command such a high premium:

https://richelectronics.co.uk/product/callins-300uf-25v-audio-capacitor
-vintage-low-esr-ol0382b

What\'s so special about them?

What\'s a good substitute?

Danke,

Is that a non-polar electrolytic? Looks like two regular caps potted.

What use is a 300 uF non-polar \'lytic?
Click to expand...

Motor Start Capacitor:

NTE Electronics MSC125V270 Series MSC Motor Start AC Electrolytic
Capacitor, Two 0.250\" Quick Connect Terminals, 270-324 µF Capacitance,
110/125V

CDN$ 15.92 FREE Delivery

https://tinyurl.com/y5uwh2gz

(https://www.amazon.ca/NTE-Electronics-MSC125V270-Electrolytic-
Capacitance/dp/B007Z7MBJY/)




--
The best designs occur in the theta state.
- sw
 
On Friday, December 11, 2020 at 11:46:56 AM UTC-5, Peter W. wrote:
https://nebula.wsimg.com/09077cfb0a4e48e0bbb958b44e95039b?AccessKeyId=1884AA24B5A4B33E3F2B&disposition=0&alloworigin=1

Anything legitimately carrying the Callins name is at least 36 years old.

Peter Wieck
Melrose Park, PA
Click to expand...

The link OP provided shows what looks like a date code of 1975...
 
ohg...@gmail.com wrote:
---------------------------------------
The link OP provided shows what looks like a date code of 1975...
Click to expand...

** Yep - no way should you buy even one.

Being epoxy sealed makes no difference to the life span and no small electro lasts 40 years in storage.
The dealer is a scam artist.
Ebay is full of them.


..... Phil
 
On Fri, 11 Dec 2020 16:13:22 -0000 (UTC), \"Don\" <g@crcomp.net> wrote:

Greetings,

Why do Callins capacitors command such a high premium:

https://richelectronics.co.uk/product/callins-300uf-25v-audio-capacitor-vintage-low-esr-ol0382b

What\'s so special about them?

What\'s a good substitute?

Danke,
Click to expand...

It\'s for restoration, rather than repair.

RL
 
On Fri, 11 Dec 2020 08:55:19 -0800, jlarkin@highlandsniptechnology.com
wrote:

On Fri, 11 Dec 2020 16:13:22 -0000 (UTC), \"Don\" <g@crcomp.net> wrote:

Greetings,

Why do Callins capacitors command such a high premium:

https://richelectronics.co.uk/product/callins-300uf-25v-audio-capacitor-vintage-low-esr-ol0382b

What\'s so special about them?

What\'s a good substitute?

Danke,

Is that a non-polar electrolytic? Looks like two regular caps potted.

What use is a 300 uF non-polar \'lytic?
Click to expand...

Crossover network?

I also saw something of a similar value in a Hafler preamp parts list,
(and another smaller value) though I couldn\'t locate it on the
schematis..

RL
 
On Fri, 11 Dec 2020 18:34:30 GMT, Steve Wilson <spam@me.com> wrote:

jlarkin@highlandsniptechnology.com wrote:

On Fri, 11 Dec 2020 16:13:22 -0000 (UTC), \"Don\" <g@crcomp.net> wrote:

Greetings,

Why do Callins capacitors command such a high premium:

https://richelectronics.co.uk/product/callins-300uf-25v-audio-capacitor
-vintage-low-esr-ol0382b

What\'s so special about them?

What\'s a good substitute?

Danke,

Is that a non-polar electrolytic? Looks like two regular caps potted.

What use is a 300 uF non-polar \'lytic?

Motor Start Capacitor:

NTE Electronics MSC125V270 Series MSC Motor Start AC Electrolytic
Capacitor, Two 0.250\" Quick Connect Terminals, 270-324 µF Capacitance,
110/125V
Click to expand...

But the Callins is 25 volts.
 
John Larkin <jlarkin@highland_atwork_technology.com> wrote:

What use is a 300 uF non-polar \'lytic?

Motor Start Capacitor:

NTE Electronics MSC125V270 Series MSC Motor Start AC Electrolytic
Capacitor, Two 0.250\" Quick Connect Terminals, 270-324 µF Capacitance,
110/125V

CDN$ 15.92 FREE Delivery

https://tinyurl.com/y5uwh2gz

(https://www.amazon.ca/NTE-Electronics-MSC125V270-Electrolytic-
Capacitance/dp/B007Z7MBJY/)
Click to expand...

> But the Callins is 25 volts.

So? You didn\'t specify. You said \"What use is a 300 uF non-polar \'lytic?\"

I imagine the Amazon cap could be used in audio applications. It may even
have lower distortion. It is certainly intended to carry amps of current,
and might even be used in high power aplications where the original
collins would fail.

The Amazon is brand new, where the collins has probably dried out by now.


--
The best designs occur in the theta state. - sw
 
The earlier Callins link was only for reference to give people an idea
of the price and physical characteristics.

My questions actually pertain to a 100 μF 6 V Callins, which looks
identical. It\'s used in a PAIA VCO module from the 1970s. The
schematic\'s shown here:

https://crcomp.net/paia/2720-2A.png

C7 is the Callins. C6 is a plain vanilla electrolytic in a can. They
both have a value of 100 μF.

Although the simpleminded answer goes through everyone\'s mind first, it
doesn\'t add up. Why pay more for a Callins back in the day? Why not buy
twice as many electrolytics in cans to get a better price break?
Or, if Callins was the cheap alternative back then, why pay more
for electrolytics in cans?

Perhaps the answer\'s as simple as the late John Simonton inheriting a
pile of Callins. It\'s too late to ask John, but there\'s a PAIA forum,
which may supply some answers, provided they process my registration.
For the time being, the Callins will be substituted with a new
electrolytic in a can.

Danke,

--
Don, KB7RPU
There was a young lady named Bright Whose speed was far faster than light;
She set out one day In a relative way And returned on the previous night.
 
Phil Allison <pallison49@gmail.com> wrote:

> the Callins is in an epoxy sealed container

Interesting, but it doesn\'t answer my question:

Why was the circuit designed to use a Callins in C7?

Danke,

--
Don, KB7RPU
There was a young lady named Bright Whose speed was far faster than light;
She set out one day In a relative way And returned on the previous night.
 
On 12/11/2020 10:13 AM, Don wrote:
Greetings,

Why do Callins capacitors command such a high premium:
Click to expand...

So they could call themselves Rich Electronics.

https://richelectronics.co.uk/product/callins-300uf-25v-audio-capacitor-vintage-low-esr-ol0382b

What\'s so special about them?

What\'s a good substitute?

Danke,
Click to expand...
 
On 2020-12-11 17:55, jlarkin@highlandsniptechnology.com wrote:
On Fri, 11 Dec 2020 16:13:22 -0000 (UTC), \"Don\" <g@crcomp.net> wrote:

Greetings,

Why do Callins capacitors command such a high premium:

https://richelectronics.co.uk/product/callins-300uf-25v-audio-capacitor-vintage-low-esr-ol0382b

What\'s so special about them?

What\'s a good substitute?

Danke,

Is that a non-polar electrolytic? Looks like two regular caps potted.

What use is a 300 uF non-polar \'lytic?
Click to expand...

The second picture (un)clearly shows + + + marking.
 
Don,

If you look closely at the photo showing the cap on its side, you\'ll
see a row of \"+\" marks, so this is a plain old polarized electrolytic
capacitor, are are both C6 and C7 on the schematic diagram you provided.
Perhaps one of them had been replaced over the units history. One is
marked 100uf/10V and the other 100V/6V, so maybe it is what the
purchasing department was able to get a deal on.

My experience with those encapsulated Callins caps is that they are
awful. I am NOT a fan of changing every electrolytic capacitor over 3
months old, which seems to be popular on internet forums, but I might
make an exception for the Callins caps. A couple of years ago I got a
lot of surplus caps, including dozens of Callins, all of which tested
bad even after being give a while to form up on my trusty Heathkit IT-28
\"capacitor checker\".

AR and KLH seemed to use quite a few of them in some models.

Maybe they are charging so much because they are the only good ones
left on the planet?

Regards,
Tim Schwartz
Bristol Electronics


On 12/11/2020 11:13 AM, Don wrote:
Greetings,

Why do Callins capacitors command such a high premium:

https://richelectronics.co.uk/product/callins-300uf-25v-audio-capacitor-vintage-low-esr-ol0382b

What\'s so special about them?

What\'s a good substitute?

Danke,
Click to expand...
 
On Sat, 12 Dec 2020 04:49:05 -0000 (UTC), \"Don\" <g@crcomp.net> wrote:

The earlier Callins link was only for reference to give people an idea
of the price and physical characteristics.

My questions actually pertain to a 100 ?F 6 V Callins, which looks
identical. It\'s used in a PAIA VCO module from the 1970s. The
schematic\'s shown here:

https://crcomp.net/paia/2720-2A.png

C7 is the Callins. C6 is a plain vanilla electrolytic in a can. They
both have a value of 100 ?F.

Although the simpleminded answer goes through everyone\'s mind first, it
doesn\'t add up. Why pay more for a Callins back in the day? Why not buy
twice as many electrolytics in cans to get a better price break?
Or, if Callins was the cheap alternative back then, why pay more
for electrolytics in cans?

Perhaps the answer\'s as simple as the late John Simonton inheriting a
pile of Callins. It\'s too late to ask John, but there\'s a PAIA forum,
which may supply some answers, provided they process my registration.
For the time being, the Callins will be substituted with a new
electrolytic in a can.

Danke,
Click to expand...

Looks like a 6V part used to filter a 6.2V reference voltage.

Hmmm.

RL
 
On Sat, 12 Dec 2020 07:56:15 -0000 (UTC), \"Don\" <g@crcomp.net> wrote:

Phil Allison <pallison49@gmail.com> wrote:

the Callins is in an epoxy sealed container

Interesting, but it doesn\'t answer my question:

Why was the circuit designed to use a Callins in C7?

Danke,
Click to expand...

If it was designed to use a Callins cap, then Callins
would show up on the schematic and BOM.

As it is, specifying a 6V electrolytic to filter a
6.2V reference is probably a mistake.

RL
 
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