audio recording on IC -help wanted

[Don Bowey]

On 3/9/08 7:14 AM, in article
53e0e71f-f047-406d-8f85-319bc4af7e06@13g2000hsb.googlegroups.com,
"bill.sloman@ieee.org" <bill.sloman@ieee.org> wrote:

On Mar 9, 2:40 pm, John Fields <jfie...@austininstruments.com> wrote:
On Sun, 9 Mar 2008 04:42:53 -0700 (PDT), bill.slo...@ieee.org wrote:
On Mar 9, 10:47 am, "Michael A. Terrell" <mike.terr...@earthlink.net
wrote:
Hello folks,

I am getting cheap these days, I am trying to cut corner by tripling the
capacitance in the capacitor, is this possible?  I have heard that it's
possible.  Some people have done it successfully.  I am just wondering if
any of you smart dumbass can help.

If you weren't quite the ill-informed idiot that you are, you'd know
that the dielectric in an electrolytic capacitor is formed by the
electrolytic oxidation of the surface of the aluminium foil the forms
the plates of the capacitor.

---
LOL, hook, line, and sinker! :

http://www.vcomp.co.uk/tech_tips/reform_caps/reform_caps.htm

If you weren't another uninformed idiot, you'd realise that the
proposition is at least potentionaly rational, even though Michael
Terrell is the source. It would be a daft thing to do, but could work,
after a fashion.

--
Bill Sloman, Nijmegen

Bill, you're an idiot. Mike Terrell didn't post that.

 

[Jamie]

Don Bowey wrote:

On 3/9/08 7:14 AM, in article
53e0e71f-f047-406d-8f85-319bc4af7e06@13g2000hsb.googlegroups.com,
"bill.sloman@ieee.org" <bill.sloman@ieee.org> wrote:


On Mar 9, 2:40 pm, John Fields <jfie...@austininstruments.com> wrote:

On Sun, 9 Mar 2008 04:42:53 -0700 (PDT), bill.slo...@ieee.org wrote:

On Mar 9, 10:47 am, "Michael A. Terrell" <mike.terr...@earthlink.net
wrote:

Hello folks,

I am getting cheap these days, I am trying to cut corner by tripling the
capacitance in the capacitor, is this possible? I have heard that it's
possible. Some people have done it successfully. I am just wondering if
any of you smart dumbass can help.

If you weren't quite the ill-informed idiot that you are, you'd know
that the dielectric in an electrolytic capacitor is formed by the
electrolytic oxidation of the surface of the aluminium foil the forms
the plates of the capacitor.

---
LOL, hook, line, and sinker! :

http://www.vcomp.co.uk/tech_tips/reform_caps/reform_caps.htm

If you weren't another uninformed idiot, you'd realise that the
proposition is at least potentionaly rational, even though Michael
Terrell is the source. It would be a daft thing to do, but could work,
after a fashion.

--
Bill Sloman, Nijmegen


Bill, you're an idiot. Mike Terrell didn't post that.

and what makes you so sure?

--
"I'd rather have a bottle in front of me than a frontal lobotomy"

"Daily Thought:

SOME PEOPLE ARE LIKE SLINKIES. NOT REALLY GOOD FOR ANYTHING BUT
THEY BRING A SMILE TO YOUR FACE WHEN PUSHED DOWN THE STAIRS.
http://webpages.charter.net/jamie_5"

 

Foxy's Showtime on Capital FM 25/11/98 7.35pm

Certainty level: 100%

This one, I can say with absolute certainty, is about me. It was recorded
on my Sony Recording Walkman on the evening of Wednesday 25 November 1998.
It doesn't mention me by name, so the objective observer might have trouble
understanding why I'm so sure it's about me. I'm sure, because the
harassment had restarted over the period when this piece was broadcast, and
what Capital transmitted would have been in context with events at the time.
(Sorry if that explanation is somewhat opaque, but I don't really want to
embarrass myself by giving an explanation in detail, and an intelligent
reader should be able to work it out for him/her self.)

This isn't the first time Capital have "got at" me; they were doing so
right at the very beginning in summer 1990, when they said, "if he listens
to Capital then he can't be all bad"; and Tarrant made remarks about me
in his breakfast show in spring 1994, when he said, "you know this bloke?
he says we're trying to kill him. We should be done for attempted
manslaughter."

Unfortunately I didn't record those previous, much more conclusive
instances of harassment by Capital DJs, and Capital Radio tells me they
only keep recordings for three months. But lately I've been recording
everything, and here is one product of that recording.

Neil Fox was introducing some petite Swedish songstress, sounded like
Amelia, when he said something about her petite-ness ;

"she's a big big girl, actually she's really about tiny, she's this big,
would you say what less than....."

then one of his studio staff shouted, "six inches"

then Fox laughed and said, "less than a meter tall, definitely"

What I think the "six inches" referred to should be obvious. I think it's
sexual abuse directed at me.

Also there were a lot of words like "crazy", "mad" etc on this programme,
which reinforced my belief that this was on purpose directed at myself.

I think Fox may be something of an unwilling participant in this abuse, he
doesn't want to be an abuser but the persecutors are using his show and
his staff to get at me. This is not the first time this sort of thing has
happened from his show; and my guess is that it won't be the last

6467


--
Posted via NewsDemon.com - Premium Uncensored Newsgroup Service
------->>>>>>http://www.NewsDemon.com<<<<<<------
Unlimited Access, Anonymous Accounts, Uncensored Broadband Access

 

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Dior shoes
ED hardy shoes
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Hogan shoes (paypal payment)(www.king-trade.cn )
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Prada shoes (paypal payment)(www.king-trade.cn )
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[Michael A. Terrell]

"Don Bowey" <dbowey@comcast.net> wrote in message
news:C3F961E8.B19BB%dbowey@comcast.net...

On 3/9/08 7:14 AM, in article
53e0e71f-f047-406d-8f85-319bc4af7e06@13g2000hsb.googlegroups.com,
"bill.sloman@ieee.org" <bill.sloman@ieee.org> wrote:

On Mar 9, 2:40 pm, John Fields <jfie...@austininstruments.com> wrote:
On Sun, 9 Mar 2008 04:42:53 -0700 (PDT), bill.slo...@ieee.org wrote:
On Mar 9, 10:47 am, "Michael A. Terrell" <mike.terr...@earthlink.net
wrote:
Hello folks,

I am getting cheap these days, I am trying to cut corner by tripling
the
capacitance in the capacitor, is this possible? I have heard that
it's
possible. Some people have done it successfully. I am just wondering
if
any of you smart dumbass can help.

If you weren't quite the ill-informed idiot that you are, you'd know
that the dielectric in an electrolytic capacitor is formed by the
electrolytic oxidation of the surface of the aluminium foil the forms
the plates of the capacitor.

---
LOL, hook, line, and sinker! :

http://www.vcomp.co.uk/tech_tips/reform_caps/reform_caps.htm

If you weren't another uninformed idiot, you'd realise that the
proposition is at least potentionaly rational, even though Michael
Terrell is the source. It would be a daft thing to do, but could work,
after a fashion.

--
Bill Sloman, Nijmegen

Bill, you're an idiot. Mike Terrell didn't post that.

So what Bill Board? I'm trying to get your brain to exercise and to share
your intelligence if you had one. Evidently none of you seemed to have
the brain, the brain you have is a Bla-bla brain. I don't believe you
guys suggested -ebay, -China, -Reverse polarity, -Decrease Current to 3A
from 800A... What a whole bunch of Retards. No wonder why you went to
War like me serving the Evil master.


--
Service to my evil master? Been there, Done that, and I've got my DD666 to
prove it.
Member of DAV #666.

Michael A. Terrell
Central Florida

 

[Michael A. Terrell]

"sycochkn" <sycochkn@earthlink.net> wrote in message
news:13t81mbc1l3i201@corp.supernews.com...

bill.sloman@ieee.org> wrote in message
news:8a9a815d-7dc5-485a-8128-00b959e9e5b5@x30g2000hsd.googlegroups.com...
On Mar 9, 10:47 am, "Michael A. Terrell" <mike.terr...@earthlink.net
wrote:
Hello folks,

I am getting cheap these days, I am trying to cut corner by tripling
the
capacitance in the capacitor, is this possible? I have heard that it's
possible. Some people have done it successfully. I am just wondering if
any of you smart dumbass can help.

If you weren't quite the ill-informed idiot that you are, you'd know
that the dielectric in an electrolytic capacitor is formed by the
electrolytic oxidation of the surface of the aluminium foil the forms
the plates of the capacitor.

If you reverse bias the capacitor you can reverse this process, making
the dielectric thinner ( and more likely to break down). Sadly, the
reverse process is unlikely to thin the oxide layer to exactly the
same extent at every point, so you run the risk of lowering the
breakdown voltage faster than you increase the capacitance.

As cheap goes, this about a poor and investment of your time as you
could make - short of slandering me in this user group which however
does seem to give you some kind of demented satisfaction - but do try
it. You won't enjoy the process at all, but does that worry me?

--
Bill Sloman, Nijmegen

If the capacitor is large enough the vent is restrained and the supplied
current is adequate you get a nice mushroom cloud.

Bob

No Bob, you actually join the top rank of American idiots, I posted my
question to test your brain(s). The correct answer is: Yes you can
change, double or even triple the capacitance without paying High Price.
It's all done, soon enough you'll see new products coming out, so slim
(0.5" in height with 20A power capability.). Take care DumbAss.


--
Service to my evil master? Been there, Done that, and I've got my DD666 to
prove it.
Member of DAV #666.

Michael A. Terrell
Central Florida

 

We have been operating in Michigan for about 30 years and have
decided
to throw in the towel. Selling our entire inventory of Video,
Pinball,
Jukebox; Coin sorting, vending, counting equipment. Many complete
cabinets and lots of parts, manuals, and test equipment. Some working
and in great condition, some non-working or need various repairs or
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Located in Central Lower Michigan, one day auction internet bidding
only. All items will be on display for personal & physical inspection
the day before 5/19/2008 and day of the auction 5/20/2008. All items
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day after and within 3 days following auction end.
Most auction lots will be starting between $5 & $100 with no
reserve.
The auction catalog is viewable now. Here's a link
to the auction: http://www.1800lastbid.com/auction/listings/categories/index.cfm?cate...
..
Before asking, "NO", I will not sell any item outright, "all items
are up for auction ONLY" and I will not ship, all items must be
picked
up by buyer or buyer's representative. Please feel free to contact me
directly at any time, for any other questions or concerns before the
auction or bidding. bud.iaauct...@gmail.com .

 

[Gary Tait]

Boki <bokiteam@ms21.hinet.net> wrote in news:1181580147.092009.52740
@x35g2000prf.googlegroups.com:

Hi All,

I am connecting to Nokia phone, due to its output is only USB signal,
even it can emulate com port at PC side, however, it need USB host
( and driver )

I am implementing on embedded system, I believe you know what I need.

Could you please adivce the sutible chip for me ?

I want as cheap as possible.


Best regards,
Boki.

You need a USB host controller system with an OS that can enumerate USB,
and you can get source or drivers for the platform.

There is no such thing to "convert" a USB device to something else in a
simple way.

If it were me, I'd find a phone that has standard RS232 signalling.

 

[Dave Platt]

In article <46fc71d2$0$24285$4c368faf@roadrunner.com>,
Green Xenon [Radium] <glucegen1@excite.com> wrote:

Would 300:1 work?

Not for video, no.

The ULF is even lower-frequency than MW. If a baud of
20-symbols-per-second but 300 bits-per-symbol is used, can the luminance
signal have its temporal and spatial frequencies downshifted
sufficiently so that it can be on a ULF-frequency FM carrier? Will this
work even if the FM carrier’s center-frequency is 300 Hz?

No. No. And, no. You cannot possibly do this... for several reasons.

For one thing, trying to convey 300 bits of information per symbol is
still grossly optimistic. If you take a look at real-world modulation
systems (QAM64 and so forth) you'll find that they send much less
information per symbol... I don't have the best numbers available off
of the top of my head, but I'd be surprised if there's a system in
practical use which tries to send more than 16 bits per symbol. The
amount of noise on real-world communcation channels makes it
impractical-to-impossible to go much beyond that... and you are
proposing something *far* beyond that. Trust me - the laws of physics
in this universe won't permit you to do it.

For another thing, even if you *could* pack that much information into
a symbol, you'd still be capable of sending only 6000 bits per second.
That's far too little for anything resembling real video at real
resolutions... you couldn't even send one frame per second at that
rate.

For a third thing, the frequency content of a video luminance signal
starts just above DC, and goes up from there (to several MHz with
standard NTSC video). There really isn't any room for you to shift
the frequencies downwards by a useful amount... if you try, you end up
trying to shift real information down past DC. Either you lose it (if
you filter before shifting) or you *try* to shift it down past DC into
negative frequencies, and it aliases right back up into your passband
and distorts the rest of the signal.

To sum it up - what you're trying to do is fundamentally impossible.
It doesn't matter how you shift the luminance signal's frequencies
around. It doesn't matter how you modulate it. It doesn't matter
what tricks you play. You just don't have enough bandwidth available.
"You can't fool Mother Nature."

So there is no way to decrease how far the sidebands will go?

With FM? Nope, not in the way you're hoping. Modulate a carrier Fc
with a frequency Fm, and the first sidebands will be at Fc+Fm and
Fc-Fm, just as would be true with AM. That's the narrowest you can
get.

--
Dave Platt <dplatt@radagast.org> AE6EO
Friends of Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!

 

[Lostgallifreyan]

Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote in
news:490DAA49.A91DD4C1@hotmail.com:

Lostgallifreyan wrote:

Eeyore wrote
Lostgallifreyan wrote:
Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote

Loads of people make polypropylene caps. From experience Epcos has
possibly the largest range.

Big yellow ones with 40ľF and 900 or more volts? Got to ask because
I wanted something like that or stronger for a laser flash driver
once and I never found anything that big via Google searches.

The Epcos polypropylenes are all AFAIK in blue plastic boxes. Blue
seems to be the typical colour for polypropylene.

Lots of yellow axial cylindrical ones exist for HV, and I've seen them
in passive speaker crossovers too.

Those sound more like polyester to me. No need ever for polypropylenes
in an audio crossover. Can you give me some series numbers ?

Want to bet? Can't give you numbers but Google image results alone throw them
out ten at a time in various contexts, especially in audio. (Most times I see
polyesters, they're in mains filters or cheap timing circuits for small
signals).

http://www.allproducts.com/ee/livingston/13-capacitors_print.html
http://www.octave-electronics.com/Parts/capacitors.shtml
http://www.corrson.com/crossover.html
http://www.audiocircle.com/circles/index.php?topic=54218.140
http://www.b2bcapacitor.com/products/mpa-capacitor.htm

What was the PRR on your laser ?

Slow.

How slow ?


Just needed a fast pulse, shaped by a coil. It had a fat yellow
polypropylene cap, and some people reported using more oomph so I
looked around to see if suitable caps existed. Couldn't find any nig
enough until I saw the big polyethylene caps that some people in Russia
were selling on eBay. Expensive, and slow to ship, and massively
overpowered for a small rangefinder YAG.

Photograhic high power flash units simply use purpose designed
electrolytics designed for ultra-fast discharge. About 1000uF @ 320V !

Not the same. Flashlamps for small YAG laser pumping can work, sort of, with
photoflash, people do that, but it's not good design, it doesn't give the
well-controlled pulse needed, and that's done with a polypropylene (or
polyethylene) cap and a pulse shaping coil.

 

[Joerg]

John Larkin wrote:

On Fri, 25 Jul 2008 14:26:18 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:

John Larkin wrote:
On Wed, 23 Jul 2008 09:59:26 -0700, Joerg
notthisjoergsch@removethispacbell.net> wrote:

Hello All,

Got a circuit where in hindsight the client decided they need >10 times
the juice than initially spec'd. This was truly unforeseen for them and
we have to make it work at least for a proto series. Of course, now all
those 0805 resistors in the power path would exceed their usual 1/8W
spec. Found these at 1/3W:

http://www.susumu.co.jp/english/pdf/products-j01-07.pdf

I plan to run them around 200-250mW. Was expecting those to be really
tall to vent off some heat but they are surprisingly flat, only 0.4mm
high. Will this become a heat problem on FR-4 for stuff that can run
24/7? Any experience?

Can I interest you in 0402 at 10 watts? Or 0505 at 50 watts?

http://www.emct.com/microwavepassivecomponents-a43445.html

Ouch! That ought to do it for an impressive meltdown procedure on FR4.
Reminds me of a tube in a ceramic socket on phenolic. I was still a kid,
blissfully unaware of the limitations of some materials. Transistors
were very expensive in Germany so I built most stuff from salvaged
tubes, plucked out of radios and TV sets. Well, this thing worked for
months. Then one fine day there was fireworks, hissing and smoke. The
ceramic socket including tube had fallen through the charred hole that
had developed. Now I knew where that faint "amperage smell" was coming
from. Luckily the plate connector was up top and the tube fell in, but
didn't tip over. Cuz I had "economized" on the power supply and ran
straight from 230V mains into a voltage doubler. The fuse was, ahem,
home made.

My first ever job interview, I made the comment that I generally
preferred tubes (which I got free) to transistors, because transistors
were too easy to blow up. The prig said "that won't do" and didn't
hire me. Next interview, I said the same thing and that guy laughed
and did hire me. I designed about $100M of stuff for the second guy.

Similar things happen to consultants. Sometimes people present a task,
then ask whether I am versed in VHDL, Cadence and all that. I often tell
them "No, but a chip design wouldn't make sense here, we can do that at
lower cost with off-the-shelf parts". Sometimes they walk away. The
companies of those who do are usually not heard of much anymore. Some of
them keep burning an enormous amount of cash until their VCs turn off
the spigot. The sad cases are where I could have really helped them with
$50-100K in cost, they decline, keep trying on their own, blow through
another few million bucks and then kablouie.

--
Regards, Joerg

http://www.analogconsultants.com/

"gmail" domain blocked because of excessive spam.
Use another domain or send PM.

 

[Phil Allison]

"Eeysore Fucking Tenth Wit "

There is no overall economic or CO2 advantage to be had by making
CFL
use compulsory.

So far, compulsory is only in Australia.

** You are very ignorant.

The EU has announced an impending ban on incandescent lamps in the
next
two
years or so.

There is as yet no Directive.

** The ban has been announced and the process has begun.

No ban has been announced.

** See the word " impending " ????

Need to look up a dictionary - do you fuckwit ?

Was in all the news papers.

http://www.environmentalleader.com/2007/03/09/eu-to-ban-inefficient-light-bulbs/

http://www.reuters.com/article/scienceNews/idUSL0966634620070309



.......... Phil

 

[John Fields]

On Sun, 9 Mar 2008 13:14:34 -0800, "Michael A. Terrell"
<mike.terreIl@earthlink.net> wrote:

"Don Bowey" <dbowey@comcast.net> wrote in message
news:C3F9A02C.B1A32%dbowey@comcast.net...
On 3/9/08 1:24 PM, in article fr1h2a$lsg$1@aioe.org, "Michael A.
Terrell"
mike.terreIl@earthlink.net> wrote:


"Don Bowey" <dbowey@comcast.net> wrote in message
news:C3F961E8.B19BB%dbowey@comcast.net...
On 3/9/08 7:14 AM, in article
53e0e71f-f047-406d-8f85-319bc4af7e06@13g2000hsb.googlegroups.com,
"bill.sloman@ieee.org" <bill.sloman@ieee.org> wrote:

On Mar 9, 2:40 pm, John Fields <jfie...@austininstruments.com> wrote:
On Sun, 9 Mar 2008 04:42:53 -0700 (PDT), bill.slo...@ieee.org wrote:
On Mar 9, 10:47 am, "Michael A. Terrell"
mike.terr...@earthlink.net
wrote:
Hello folks,

I am getting cheap these days, I am trying to cut corner by
tripling
the
capacitance in the capacitor, is this possible? I have heard that
it's
possible. Some people have done it successfully. I am just
wondering
if
any of you smart dumbass can help.

If you weren't quite the ill-informed idiot that you are, you'd
know
that the dielectric in an electrolytic capacitor is formed by the
electrolytic oxidation of the surface of the aluminium foil the
forms
the plates of the capacitor.

---
LOL, hook, line, and sinker! :

http://www.vcomp.co.uk/tech_tips/reform_caps/reform_caps.htm

If you weren't another uninformed idiot, you'd realise that the
proposition is at least potentionaly rational, even though Michael
Terrell is the source. It would be a daft thing to do, but could
work,
after a fashion.

--
Bill Sloman, Nijmegen

Bill, you're an idiot. Mike Terrell didn't post that.


So what Bill Board? I'm trying to get your brain to exercise and to
share
your intelligence if you had one. Evidently none of you seemed to have
the brain, the brain you have is a Bla-bla brain. I don't believe you
guys suggested -ebay, -China, -Reverse polarity, -Decrease Current to
3A
from 800A... What a whole bunch of Retards. No wonder why you went to
War like me serving the Evil master.


Does the Evil Master force you to be a cowardly POS, or are you just
naturally a CPOS?




I DON"T WORK FOR YOUR EVIL MASTER DUMMY. WHY ASK SUCH A DUMB QUESTION
DUMBASS?

STOP YOUR SHIT... AND USE YOUR BRIAN TO TRACE THE ROOT CAUSE DUMMY, OK?

---
Your "Brian"???

The root cause is, you forging cocksucker, that you've been
brianwashed (yeah, it's not a trypo ) into believing that
pretending to be someone you're not is OK.

It isn't.

If you have to hijack someone else's good name in order to spread
your hate then, obviously, you consider yourself inferior.

And, being inferior, why should anyone consider your drivel to be
important?

--
JF

 

[Michael A. Terrell]

Lostgallifreyan wrote:

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in news:AL-
dnWZjW7pS3cvUnZ2dnUVZ_tjinZ2d@earthlink.com:

epoxy dipped mylar

That's what I thought, but he said SMD at 1206 size. Did they make them that
small?

No. Vishay bought Sprague before they were big in SMD. The orange
color was used to make a positive ID, and the 2 in a circle logo was
from their RMA/EIA listing. Both were important trademarks in the US.
CDE used a deep brown, and Mallory used a pale blue so their products
could be identified on sight.

The only orange (orangish) capacitors I know of that small in SMT are
ceramic types, like one shown here:
http://www.rjcomponents.com/stock/capacitors.asp

To my bad eyes, those look reddish brown.

The value is in range for that type. A larger value in that range might also
tend to fail as a short. (Would have to be dramatic for it to fail open, it
probably wouldn't still be there..)

The part he says is shorted may be across something else that is
shorted, or an inductor. If it is on a 'ROHS' board, it may be tin
whiskers under the part. In the grade we used in our products, we
rarely saw a shorted ceramic SMD cap that wasn't physically damaged. I
found more shorted internal layers than shorted SMD ceramic caps.


--
http://improve-usenet.org/index.html

aioe.org, Goggle Groups, and Web TV users must request to be white
listed, or I will not see your messages.

If you have broadband, your ISP may have a NNTP news server included in
your account: http://www.usenettools.net/ISP.htm


There are two kinds of people on this earth:
The crazy, and the insane.
The first sign of insanity is denying that you're crazy.

 

[Phil Hobbs]

Eeyore wrote:

Phil Hobbs wrote:

Eeyore wrote:
National's LME49710/20/40 amd LM4562 seem to have the best figures at
2.5nV/sqrt Hz but in a practical circuit I found the venerable NE5534
with its 3.5 nV/sqrt Hz was quieter, presumably due to lower input noise
current in that particular configuration.

The LMEs also have insanely low THD
RL = 600ohms 0.00003% (typ)

http://www.national.com/pf/LM/LME49710.html
http://www.national.com/pf/LM/LM4562.html

Does anyone know of anything better without sacrificing unity gain
stability or THD ?

What resistance values are you assuming? Not one month ago, in this
very boutique, I posted a link to a new part with some really cute
specs--the ADA4898-1.

http://www.analog.com/static/imported-files/Data_Sheets/ADA4898-1.pdf

I gather it's probably intended for lower source resistances than yours,
but its combination of low eN and low Cin is amazing.

Yes, my source resistance may dominate. It's a new module for SSL 4000E/G
professional sound mixing desks to convert the 'channel buckets' into a
monitor desk for Digital Audio Workstations. I was shocked at how high their
mix resistor values were (15k). Crikey, even at Studiomaster in the latter
days I was using 4k7 !

It's certainly amazingly quiet though.

I'm not familiar with the THD being quoted in dBc though. Can you assist there
?

Graham

dBc = 'decibels with respect to the carrier', i.e. the undistorted output.


Cheers,

Phil Hobbs

 

[David L. Jones]

"Paul" <energymover@gmail.com> wrote in message
news:7f239414-f99c-48ad-90e2-c9b0d0db2424@l39g2000yqn.googlegroups.com...
On Jan 15, 2:19 pm, "David L. Jones" <altz...@gmail.com> wrote:

"Paul" <energymo...@gmail.com> wrote in message

news:54c2d7cf-c506-4647-b272-17d608c8854a@x8g2000yqk.googlegroups.com...

I'm testing a new DMM I purchased, AM-240 by Amprobe. It claims *over*
100Mohm impedance in 400.0mV mode.

Nothing new there, many DMM's have selectable "high impedance" or "HI-Z"
modes on the mV range. e.g. the Fluke 87.

I've looked at the specs of ~ 30 DMM's today, include a lot of
fluke's, and never seen anything near 14Gohms impedance. Keithley has
an electrometer that's probably higher. Most DMM's are around 10Mohms
(not gigaohms) input impedance.

The Agilent U1253A also has it. Spec is ">1Gohm".
There are quite a few meters I've seen over the years that have it too.
I think I even saw it on one of those $10 disposable meters too.

Dave.

 

[UFO]

New website just for electronic parts launched in 2008.
www.parts-link.com

Qualified parts vendors can get a banner the size shown in the top right of
the home page. Click on 'corporate sponsors' link in the main menu for the
prices. Independent technicians and service centers are also welcome.

 

[JW]

Hello all, I am repairing a Keithley 617 that has a blown input JFET Q308
which is no longer available. Looking at the service manual, I am unable
to determine what a good sub would be, as the part # is a Keithley house
numbered part (617-606) The manual is here:
http://www.keithley.com/data?asset=1062 Schematic is on page 161 and the
parts list is on pg. 155. Could anyone please suggest a good sub for this
part? Thank you for any help.

 

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[Michael A. Terrell]

Jamie wrote:

Don Bowey wrote:

On 3/9/08 7:14 AM, in article
53e0e71f-f047-406d-8f85-319bc4af7e06@13g2000hsb.googlegroups.com,
"bill.sloman@ieee.org" <bill.sloman@ieee.org> wrote:


On Mar 9, 2:40 pm, John Fields <jfie...@austininstruments.com> wrote:

On Sun, 9 Mar 2008 04:42:53 -0700 (PDT), bill.slo...@ieee.org wrote:

On Mar 9, 10:47 am, "Michael A. Terrell" <mike.terr...@earthlink.net
wrote:

Hello folks,

I am getting cheap these days, I am trying to cut corner by tripling the
capacitance in the capacitor, is this possible? I have heard that it's
possible. Some people have done it successfully. I am just wondering if
any of you smart dumbass can help.

If you weren't quite the ill-informed idiot that you are, you'd know
that the dielectric in an electrolytic capacitor is formed by the
electrolytic oxidation of the surface of the aluminium foil the forms
the plates of the capacitor.

---
LOL, hook, line, and sinker! :

http://www.vcomp.co.uk/tech_tips/reform_caps/reform_caps.htm

If you weren't another uninformed idiot, you'd realise that the
proposition is at least potentionaly rational, even though Michael
Terrell is the source. It would be a daft thing to do, but could work,
after a fashion.

--
Bill Sloman, Nijmegen


Bill, you're an idiot. Mike Terrell didn't post that.

and what makes you so sure?

--
"I'd rather have a bottle in front of me than a frontal lobotomy"

"Daily Thought:

SOME PEOPLE ARE LIKE SLINKIES. NOT REALLY GOOD FOR ANYTHING BUT
THEY BRING A SMILE TO YOUR FACE WHEN PUSHED DOWN THE STAIRS.
http://webpages.charter.net/jamie_5"

If you stopped drinking and falling down the stairs you might learn
to read message headers, where you would see the coward is posting
through aioe.org.




--
My sig file can beat up your sig file!