Im tired of buying Air- In A Can, which never seems to decrease in price. A
small Compressor for blasting Dust, dirt, debris from Electronic Equipment
would be great, preferably one with custom attachments for blowing into hard
to reach areas.
I guess its possible to convert a 12VDC Car Air Compressor to work on your
BEnch, but You 'd need a 12VDC Supply for it, plus I dont know if any come
with an
air-trigger nozzle for what I descrbed.
--
ICQ: 63671970
I'm sure you can find one. It should also have a very small resovour. Many
air brush sized models should work. Depending on the nozzle size and
air flow, you might need allot to get great gusts of wind.Should also have a
water separator!
greg
BOB
Techforce wrote:
> Are there any Benchtop 120VAC Air Compressors made for servicing
> Electronics?
>
> Im tired of buying Air- In A Can, which never seems to decrease in price. A
> small Compressor for blasting Dust, dirt, debris from Electronic Equipment
> would be great, preferably one with custom attachments for blowing into hard
> to reach areas.
What about an air tank? You fill it up with a regular compressor to charge this
and a blower attachment will substitute for air in can(actually they are
hydrofluorocarbons with older types being CFC FREON 12)
>
>
> I guess its possible to convert a 12VDC Car Air Compressor to work on your
> BEnch, but You 'd need a 12VDC Supply for it, plus I dont know if any come
> with an
> air-trigger nozzle for what I descrbed.
Get an air tank and fill it up using a 12V compressor.
>
>
> --
> ICQ: 63671970
Check out your local hobby store,for an air-brush compressor,or
www.micromark.com. I've seen them at Pearl craft stores too. Michael's
might have them too.Cost is $70 and up. Harbor Freight had a couple,too,and
Wal-Mart was selling a small compressor for $100. They have air-tool
accessories,too.
--
Jim Yanik,NRA member
remove X to contact me
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Becareful about blowing air. Air is static generating and you can
easily blowup
ICs w/ a air gun. Industry uses nitrogen gas to blow off pcbs.
> Im tired of buying Air- In A Can, which never seems to decrease in price. A
> small Compressor for blasting Dust, dirt, debris from Electronic Equipment
> would be great, preferably one with custom attachments for blowing into hard
> to reach areas.
I've used small compressors w/ a 1 gal tamk for portable air
brushes, works
on small brds 12" x 12".
> I guess its possible to convert a 12VDC Car Air Compressor to work on your
> BEnch, but You 'd need a 12VDC Supply for it, plus I dont know if any come
> with an air-trigger nozzle for what I descrbed.
I've seen a 12v tire inflate/compressor work, juzt get a big
enough gas/air
tank to hold the compressed air (like a capacitor). If you don't
have a tank
then the compressor is always going to be pumping and you can
burn out a small
motor/compressor that way.
Of course, you need a nice alloy rim for it to look good in the workshop
;o)
Robin. Trekking for charity
www.rmsconsult.co.uk/inca
"Ed Ngai" <en...@sprintmail.com> wrote in message
news:3A7BCB2E...@sprintmail.com...
>Techforce wrote:
>> Are there any Benchtop 120VAC Air Compressors made for servicing Electronics?
>
>Becareful about blowing air. Air is static generating and you can
>easily blowup
>ICs w/ a air gun. Industry uses nitrogen gas to blow off pcbs.
Interesting...in PC repair training, compressed air is generally
recommended as the way to go, over a vacuum cleaner as another option.
Oh well...air is mostly nitrogen (72%?, from memory). :-)
Tom
You want to monitor the reltive humidity and temp. in a repair
lab.
You can easily blow up a motherbrd w/ compressed air. Get a
Static
meter (about $300.00 to $1000.00) and measure the effects of
blowing
air across surfaces. You'll see the charge build. Now look at
at
the chart of static sensitive parts, CMOS gets killed at what
voltage ?
I don't remember...30? 50?
Compressed air is supposed to be a superior alternative to a vacuum,
and compressed nitrogen isn't easily attainable (is it?), so I guess
keeping the humidity up and compressed air is the best available
choice.
Tom
> >> On Sat, 03 Feb 2001 09:11:44 GMT, Ed Ngai <en...@sprintmail.com>
> >> wrote:
> >> >Techforce wrote:
> >> >> Are there any Benchtop 120VAC Air Compressors made for servicing Electronics?
> >> >Becareful about blowing air. Air is static generating and you can
> >> >easily blowup ICs w/ a air gun. Industry uses nitrogen gas to blow
> >> >off pcbs.
> >> Interesting...in PC repair training, compressed air is generally
> >> recommended as the way to go, over a vacuum cleaner as another option.
> >> Oh well...air is mostly nitrogen (72%?, from memory). :-)
> >> Tom
> >You want to monitor the reltive humidity and temp. in a repair
> >lab. You can easily blow up a motherbrd w/ compressed air.
> >Get a Static meter (about $300.00 to $1000.00) and measure the
> >effects of blowing air across surfaces. You'll see the charge
> >build. Now look at the chart of static sensitive parts, CMOS
> >gets killed at what voltage ?
> I don't remember...30? 50?
> Compressed air is supposed to be a superior alternative to a vacuum,
> and compressed nitrogen isn't easily attainable (is it?), so I guess
> keeping the humidity up and compressed air is the best available
> choice.
> Tom
Nitrogen can be gooten from any welding shop that handles gas.
You use CO2 for lasers, Acetylene, Argon for mig/tig, nitrogen,
O2, you can buy any gas you want for a price.
I was surprised the 1st time a guy showed me how air could charge
up a 386 motherboard in sec.s. The brd was crap after the air
blow.
It didn't work. Now the brd was chargesd up and then placed into
the
chassis. That's how the brd discharged itself causeing
catostrophic
brd damage. And then even w/ a brd in a chassis, the charge
buildup
killed the brd, wouldn't boot. Which or how many of the cmos ICs
died?
ESD Classifications
DOD-STD-1686 EOS/ESD Device Voltage Related Device
Equivalent 5.1 Sensitivity
Class l Class 0 0 to <= 249 MR Head Product
Class 1 Class 1A 250 to <= 499 CMOS ICs
Class l Class 1B 500 to <= 999
Class 1 Class 1C 1000 to <= 1,999
Class 2 Class 2 2000 to <= 3,999
Class 3 Class 3A 4000 to <= 7,999
Class 3 Class 3B >= 8000
Stu
if its just pcb's I would be carefull. Other things are not so critical.
I don't know if nitrogen has any less static. It would probably be better
to blow humidified air, but air is dehumidified when released.
I would buy or make an AC ionizer for critical work.
greg
Harbor Freight sells some small,air-brush type compressors,for around
$70.,also the Campbell-Hausfield one for $99.95,which is also available at
Wal-Mart. HF also sells a 2 gal commercial-type compressor for $99,was on
sale for $89.,can supply real air tools and paint guns.
--
,_,
Lionel * Retired Audio/Visual Electronic Technician (O,O)
Wagner * Patron member, National Capital Freenet ( )
------------<best viewed with Fixed(width)Sys font>--------"-"-
>Techforce wrote:
>> Are there any Benchtop 120VAC Air Compressors made for servicing
>> Electronics?
>
>Becareful about blowing air. Air is static generating and you can
>easily blowup
>ICs w/ a air gun. Industry uses nitrogen gas to blow off pcbs.
>
Why wouldn't a stream of nitrogen create static charges? Or any other fast
flowing gas? I suspect that the industry uses ionizers to neutralize any
charges before the stream gets to the PCB's.I've seen devices for this
purpose in catalogs,BTW.