sci.electronics.repair@googlegroups.com

Today's topics:

* Triple ganged pots - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/0db7c3a79a7550cb?hl=en
* Lead free solder - 2 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/7ff46ef49e9b7de3?hl=en
* Found: E book stash. - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/e957cecc59313da7?hl=en
* cheap wholesale soccer jersey baseball jerseys basketball jerseys NFL NBA
MLB NHL jersey free shipping paypal payment http://www.24hours-online.com - 1
messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/44ed4d717d96802c?hl=en
* Old style filament lamps? - 2 messages, 2 authors
http://groups.google.com/group/sci.electronics.repair/t/8b70a4142ec9c2ec?hl=en
* Porcelain thermally conductive insulators ? - 1 messages, 1 author
http://groups.google.com/group/sci.electronics.repair/t/b69decd6bfa03d8b?hl=en

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TOPIC: Triple ganged pots
http://groups.google.com/group/sci.electronics.repair/t/0db7c3a79a7550cb?hl=en
==============================================================================

== 1 of 1 ==
Date: Wed, Apr 27 2011 2:04 pm
From: spamtrap1888

On Apr 27, 5:49 am, "caius" <bric...@yahoo.it> wrote:
> Does anyone know a source for triple ganged pots?I need some 1kOhm of these.
> Thanks

You could start at potentiometers.com. I see they have KKK triple gang
pots, as well as modular pots that go eight deep.

==============================================================================
TOPIC: Lead free solder
http://groups.google.com/group/sci.electronics.repair/t/7ff46ef49e9b7de3?hl=en
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== 1 of 2 ==
Date: Wed, Apr 27 2011 3:05 pm
From: Father Haskell

On Apr 21, 5:07 pm, "Charles" <charlesschu...@comcast.net> wrote:
> Has this had any impact on repair and rework of electronic devices and
> equipment?

If it's as bad as the lead-free plumbing solder, expect
poor wetting and tendency to set cold. 63/37 tin-lead
can't be beat. Fast, and joints look like they're soldered
with Sterling silver.

== 2 of 2 ==
Date: Wed, Apr 27 2011 6:28 pm
From: "Arfa Daily"

"Phil Allison" <phil_a@tpg.com.au> wrote in message
news:91qcbdF3c8U1@mid.individual.net...
>
> "Arfa Daily"
>>
>> Please don't lump the British with the "Europeans". We aren't Europeans
>> in any way other than an enforced political condition. We never have been
>> and never will be, and if a lot of people over here had their way, we
>> would also get out of the political tie-ups to allow us to govern
>> ourselves and make our own laws again, without interference from Brussels
>>
>
>
> ** Do you recall the episode of " Yes Minister " where the topic was the
> impending EU directive re the " Euro Sausage".
>
> Folk generally mistake that show for a comedy, when it was clearly a
> instructive documentary.
>
>
>
> .... Phil
>

For once Phil, very insightful ...

Arfa

==============================================================================
TOPIC: Found: E book stash.
http://groups.google.com/group/sci.electronics.repair/t/e957cecc59313da7?hl=en
==============================================================================

== 1 of 1 ==
Date: Wed, Apr 27 2011 4:40 pm
From: "Gagi-9a6aag"

"Ian Field" <gangprobing.alien@ntlworld.com> wrote in message
news:Gxgtp.39306$o81.32855@newsfe28.ams2...
> http://www.unhas.ac.id/tahir/ebook/
>

awesome collection!!!
thanks :)

i already spreaded the link to Croatian Electronics Community through local
news group....its very welcomed ;)

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http://groups.google.com/group/sci.electronics.repair/t/44ed4d717d96802c?hl=en
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==============================================================================
TOPIC: Old style filament lamps?
http://groups.google.com/group/sci.electronics.repair/t/8b70a4142ec9c2ec?hl=en
==============================================================================

== 1 of 2 ==
Date: Wed, Apr 27 2011 11:27 pm
From: Terry Pinnell

(Re-posted from the lower traffic sci.electronics.misc group.)

Does anyone know where I can buy 'normal' filament lamp bulbs in the UK
please? I just cannot get on with the new economy type. My remaining stock
of 60W and 100W is dwindling rapidly.

--
Terry, East Grinstead, UK

== 2 of 2 ==
Date: Thurs, Apr 28 2011 12:19 am
From: "Phil Allison"

"Terry Pinnell"

> Does anyone know where I can buy 'normal' filament lamp bulbs in the UK
> please? I just cannot get on with the new economy type. My remaining stock
> of 60W and 100W is dwindling rapidly.

** AFAIK- even if you came across a stock it is illegal now for anyone to
sell them to you.

Have a look for the high efficiency halogen bulbs that are made in the same
style as regular BC and ES 40 watt and 60 watt bulbs. Rated at 2000 hours
and bit whiter light but rather more expensive.

Legally on sale all over Australia, but not sure about the UK.

..... Phil

==============================================================================
TOPIC: Porcelain thermally conductive insulators ?
http://groups.google.com/group/sci.electronics.repair/t/b69decd6bfa03d8b?hl=en
==============================================================================

== 1 of 1 ==
Date: Thurs, Apr 28 2011 12:16 am
From: "N_Cook"

josephkk <joseph_barrett@sbcglobal.net> wrote in message
news:3dhgr69cmrqp868e9inki0asu6fvhr553l@4ax.com...
On Thu, 21 Apr 2011 21:15:25 +0100, Baron <baron@linuxmaniac.net> wrote:

>josephkk Inscribed thus:
>
>> On Mon, 18 Apr 2011 17:36:42 +0100, Baron <baron@linuxmaniac.net>
>> wrote:
>>
>>>N_Cook Inscribed thus:
>>>
>>>> 1.8mm slabs of porcelain under TO220 devices.
>>>
>>>I would check that ! Its more likely that they are Beryllium_oxide !
>>><http://en.wikipedia.org/wiki/Beryllium_oxide>
>>>
>>>> Tried grinding a clearance notch on the side of one
>>>> pad but got nowhere as ceramic.
>>>> Not only that but I had no trouble holding the slab in fingers while
>>>> trying to grind a slot, it was barely getting warm - good thermal
>>>> insulator or small grinding wheel not generating heat as not cutting
>>>> into the material ?
>>>
>>>The dust from grinding or abrading Beryllium_oxide is highly toxic !
>>
>> BeO is very expensive. I would be very surprised to find any in such
>> application.
>
>I wonder how much 12 dozen TO3 BeO insulators would be worth ?

The last time i saw a price they were over US $1 each, but that was over
30 years ago and for military use. Between the now rabid regulation and
the expected cost i would be rather surprised to find them in commercial
instrument amplifiers. Of course with Chinese manufacture such bets may
be knocked into a cocked hat.

++++

I'm assuming boards soldered up in China but assembled into the cab in USA.
So these insulators would likely be fitted in the USA. They obviously were
not made for the job, wrong cross-section area, unnecessarily thick, hole
not used - perhaps they just had them laying around. That grey silipad could
have been used with FET legs preformed to accommodate.

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