Source Of Capacitors?
 

I need a couple of 15uF, 100v radial capacitors - 105c.

Typically the online price is less than a dollar each, but the shipping
is closer to $10.00.

I've been looking through Alibaba because the Chinese government seems
to subsidize shopping. I've gotten smart phone subassemblies shipped
all the way from Guandong for zero shipping.... but no luck yet with
capacitors.

Can anybody cite a source where they don't charge so much for shipping?
--
Pete Cresswell

Source Of Capacitors?
 

On 2014-04-02 16:43:14 +0200, (PeteCresswell) said:

I need a couple of 15uF, 100v radial capacitors - 105c.

Typically the online price is less than a dollar each, but the shipping
is closer to $10.00.

I've been looking through Alibaba because the Chinese government seems
to subsidize shopping. I've gotten smart phone subassemblies shipped
all the way from Guandong for zero shipping.... but no luck yet with
capacitors.

Can anybody cite a source where they don't charge so much for shipping?

you can get them with low shipping on ebay.

--

Jean-Yves.

Source Of Capacitors?
 

On Wed, 02 Apr 2014 10:43:14 -0400, (PeteCresswell) wrote:
I need a couple of 15uF, 100v radial capacitors - 105c.

Typically the online price is less than a dollar each, but the shipping
is closer to $10.00.

I've been looking through Alibaba because the Chinese government seems
to subsidize shopping. I've gotten smart phone subassemblies shipped
all the way from Guandong for zero shipping.... but no luck yet with
capacitors.

Can anybody cite a source where they don't charge so much for shipping?

Just rip open a couple of those failed CFLs you have.
There's a 15 or 20uF 200V capacitor in each one.

Source Of Capacitors?
 

On Wednesday, April 2, 2014 10:43:14 AM UTC-4, (PeteCresswell) wrote:
I need a couple of 15uF, 100v radial capacitors - 105c.


A couple of things come to mind...

1) What voltage?

2) 15uF is an odd value (although somewhat common). Where is it used?
You might be able to get by with a 22uF which may be cheaper as it is
a more common value.

3) What size is the cap? Yes, size does matter.

4) Where are you located? Shipping costs are based upon target location.

Dan

Source Of Capacitors?
 

On 04/02/2014 11:40 AM, Allodoxaphobia wrote:
On Wed, 02 Apr 2014 10:43:14 -0400, (PeteCresswell) wrote:
I need a couple of 15uF, 100v radial capacitors - 105c.

Typically the online price is less than a dollar each, but the shipping
is closer to $10.00.

I've been looking through Alibaba because the Chinese government seems
to subsidize shopping. I've gotten smart phone subassemblies shipped
all the way from Guandong for zero shipping.... but no luck yet with
capacitors.

Can anybody cite a source where they don't charge so much for shipping?

Just rip open a couple of those failed CFLs you have.
There's a 15 or 20uF 200V capacitor in each one.


And why would you suppose that a failed CFL has good caps? It was
probably the caps failing that killed the CFLs.

Not to be mixed up with the Canadian Football League!

John :-#)#

--
(Please post followups or tech inquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
(604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

Source Of Capacitors?
 

Per Allodoxaphobia:
Just rip open a couple of those failed CFLs you have.
There's a 15 or 20uF 200V capacitor in each one.

That begs a question from somebody who has no clue electric-wise: Is
the voltage of a capacitor just a capacity limit? i.e. can a 100v
capacitor be replaced with a 300v capacitor with no problem?

I'm guessing the capacity in microfarads is critical. i.e. a 15uF cap
cannot be replaced by a 30uF cap.
--
Pete Cresswell

Source Of Capacitors?
 

..
On 4/2/2014 10:42 AM, jeanyves wrote:
On 2014-04-02 16:43:14 +0200, (PeteCresswell) said:

I need a couple of 15uF, 100v radial capacitors - 105c.

Typically the online price is less than a dollar each, but the shipping
is closer to $10.00.

I've been looking through Alibaba because the Chinese government seems
to subsidize shopping. I've gotten smart phone subassemblies shipped
all the way from Guandong for zero shipping.... but no luck yet with
capacitors.

Can anybody cite a source where they don't charge so much for shipping?

you can get them with low shipping on ebay.

Shipping costs are crazy, I sold a tek 465 minus the case, I allowed
$32.95 for shipping. It cost Over $39.00 to ship.
I recently bought an HP8640B that turned out to by not working, I
shipped it back, it cost $43.95 to ship. I got my $430 returned on the
Ebay purchase to cover the item and shipping. But I have not been
offered the defective item return shipping costs.
I even made my offer contingent that the frequency counter work. I
noted in their pictures that the display read zero and the range setting
was 512 Mhz. I pointed out it could be the int/ext switch and to
verify proper operation. When I got it the counter didn't work.
I'll keep arguing my case.
I should get me new working 8640B today, they tried delivery yesterday,
I wasn't home when they came by.
Mikek

Source Of Capacitors?
 

On 3/04/2014 7:23 AM, (PeteCresswell) wrote:
Per Allodoxaphobia:
Just rip open a couple of those failed CFLs you have.
There's a 15 or 20uF 200V capacitor in each one.

That begs a question from somebody who has no clue electric-wise: Is
the voltage of a capacitor just a capacity limit? i.e. can a 100v
capacitor be replaced with a 300v capacitor with no problem?

**Depends on the capacitor. For most types of capacitors, you'll have no
problem. Electrolytics are a different matter. They should always be
operated at some large percentage of their rated Voltage (say: at least
70%). Otherwise they may depolarise and the value could shift
dramatically.


I'm guessing the capacity in microfarads is critical. i.e. a 15uF cap
cannot be replaced by a 30uF cap.


**Depends on the application. With decoupling caps, it's not a big deal.
In fact, for such applications, a larger value may be an advantage.


--
Trevor Wilson www.rageaudio.com.au

Source Of Capacitors?
 

On Wed, 02 Apr 2014 16:50:00 -0500, amdx wrote:

I recently bought an HP8640B that turned out to by not working, I
shipped it back, it cost $43.95 to ship.

You might have shipped it to me as I fix them:
http://802.11junk.com/jeffl/pics/HP8640B/
However, you won't like my rates. I get two types of customers for
such repairs. One is the bargain hunter, who also wants a bargain
repair. I can't afford to give away my time. The other needs the
HP840B because its cavity oscillator has one of the lowest phase noise
specs (for the price) and is willing to pay my exorbitant rates.
http://www.cliftonlaboratories.com/CannedOscNoise.htm

I got my $430 returned on the
Ebay purchase to cover the item and shipping. But I have not been
offered the defective item return shipping costs.

That's why I like to buy items with "free shipping". If there's a
refund, it includes the paid shipping cost. However, you're still
stuck with paying the return shipping.

I even made my offer contingent that the frequency counter work. I
noted in their pictures that the display read zero and the range setting
was 512 Mhz. I pointed out it could be the int/ext switch and to
verify proper operation. When I got it the counter didn't work.
I'll keep arguing my case.

I about 4 hrs trying to fix an HP8640B that has similar symptoms. I
traced signals, changed modules, and swapped boards, with no progress.
I eventually discovered that the INT/EXT time base switch, on the rear
panel has fallen apart and there was no clock. I thought this was an
oddity, but I've seen it on two similar signal generators, and have
exchanged email with another HP8640B owner that has the same problem.

I should get me new working 8640B today, they tried delivery yesterday,
I wasn't home when they came by.

Good luck. At about 50 lbs, I'm sure the delivery person will not be
thrilled with another missed delivery, and will probably throw it
through a window just to get rid of it. I suggest that you plan on
being home.

As for small quantities of caps, I buy those on eBay. However, the
chances of getting garbage is high, so I always buy duplicate parts
from two different vendors. If I find something that's worthwhile, I
then buy a 100x bag of the same brand.

Testing the caps is easy if you have an ESR meter. The problem is
that I'm not sure my method is 100% reliable as I've only done it with
about 10 different types of caps. Therefore, do not assume that this
works quite yet. I place a cap in boiling water and in the oven.
http://802.11junk.com/jeffl/Electrolytic-cap-test/test-setup.jpg
The ESR does *NOT* drop as it should when the cap is hot,
http://802.11junk.com/jeffl/Electrolytic-cap-test/Cap-C.jpg
it is likely to fail. Unfortunately, all the caps, good and bad, have
their ESR go up radically when cold, which doesn't help.


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

Source Of Capacitors?
 

"Trevor Wilson"


**Depends on the capacitor. For most types of capacitors, you'll have no
problem. Electrolytics are a different matter. They should always be
operated at some large percentage of their rated Voltage (say: at least
70%). Otherwise they may depolarise and the value could shift
dramatically.


** Shame about the MILLIONS of electros used in audio equipment as coupling
caps that have no DC bias on them.



..... Phil

Source Of Capacitors?
 

On Wednesday, April 2, 2014 7:43:14 AM UTC-7, (PeteCresswell) wrote:


Can anybody cite a source where they don't charge so much for shipping?

DigiKey.com is cheap for US shipping on orders that weigh no more than
8 ounces because they ship them through the US Postal Service.

I don't know how trustworthy Alibaba is, but most Ebay capacitor
dealers sell low grade brands or even counterfeits, but one of the
few honest dealers is:

http://stores.ebay.com/PC-MotherBoard-Capacitors-Store

They buy surplus from Japan, but I don't think they have many
high voltage capacitors.

I've seen counterfeits sold by DealExtreme.com, including
some capacitors meant to be Nichicon brand (4 radial spokes stamped
on top), and some of them looked a lot like Teapo (3 radial spokes
with a dot between each pair):

http://www.dx.com/p/3300uf-16v-mothe...4#.Uzz8CahdWiM

I think I've also seen counterfeit Sanyo/Sun caps with those Teapo
markings instead of the usual Sanyo/Sun fat "K" stamp on top.

Source Of Capacitors?
 

On Fri, 4 Apr 2014, Mick Nowell wrote:

I need a couple of 15uF, 100v radial capacitors - 105c.

Typically the online price is less than a dollar each, but the shipping
is closer to $10.00.

I've been looking through Alibaba because the Chinese government seems
to subsidize shopping. I've gotten smart phone subassemblies shipped
all the way from Guandong for zero shipping.... but no luck yet with
capacitors.

Can anybody cite a source where they don't charge so much for shipping?


DIGIKEY. 4 caps $7.50 ea. + $33.00 to ship to CAN.

I just went through the thread, and I don't see any indication of where
the original poster is.

It's not just an issue of country, but city. Someone out in a little town
isn't likely to be able to visit an electronic parts store, but if they
guy lived in Canada and lived in Toronto, Vancouver or Montreal, there
surely is some place they could go to buy parts.

Has Active Electronics been whiped out? I don't know abut the US, but in
Canada they had outlets in the major cities, and you could just walk in,
and either pull parts off the rack, or for more exotic parts, fill out a
form, and they'd fulfill it on the spot.

Michael

Source Of Capacitors?
 

On 04/04/2014 07:11 PM, Michael Black wrote:
On Fri, 4 Apr 2014, Mick Nowell wrote:

I need a couple of 15uF, 100v radial capacitors - 105c.

Typically the online price is less than a dollar each, but the shipping
is closer to $10.00.

I've been looking through Alibaba because the Chinese government seems
to subsidize shopping. I've gotten smart phone subassemblies shipped
all the way from Guandong for zero shipping.... but no luck yet with
capacitors.

Can anybody cite a source where they don't charge so much for shipping?


DIGIKEY. 4 caps $7.50 ea. + $33.00 to ship to CAN.

I just went through the thread, and I don't see any indication of where
the original poster is.

It's not just an issue of country, but city. Someone out in a little
town isn't likely to be able to visit an electronic parts store, but if
they guy lived in Canada and lived in Toronto, Vancouver or Montreal,
there surely is some place they could go to buy parts.

Has Active Electronics been whiped out? I don't know abut the US, but
in Canada they had outlets in the major cities, and you could just walk
in, and either pull parts off the rack, or for more exotic parts, fill
out a form, and they'd fulfill it on the spot.

Michael


I am 10 miles from Los Angeles and I get caps from Digikey or Mouser or
Antique Radio Supply. Fry's is a joke. Radio Shack is depressing.