Mosquito Sound

[L.]

Can you shoot a picture of it and send it to me, maybe I can tell you what
it is. Can't be too weird. Remove the "NO SPAM" when replying - should you
choose to. Without seeing it, not knowing what Gould used, we could be
guessing all day.

L.

"Too_Many_Tools" <too_many_tools@yahoo.com> wrote in message
news:2dc6c2d9.0407311048.ceaaa37@posting.google.com...

Thanks for responding.

They are definitely not BNC connectors.

Nor are they any other RF related connector that I have ever seen.

They are of a push on type similar to F connectors, gold plated and
the scope itself expects a 1M 35pF input at each of the eight female
connectors.

Does anyone know what Gould used for special connectors on their
instrumentation?

Is there anywhere else you would suggest posting this question?

Thanks

TMT
"L." <FFSTA17NO@SPAMACCESS995.COM> wrote in message
news:<SsxOc.264$191.63@newsread1.dllstx09.us.to.verio.net>...
You sure they're not "BNC" connectors? Those are common on many scopes
and
probes are available from many sources.

L.

"Too_Many_Tools" <too_many_tools@yahoo.com> wrote in message
news:2dc6c2d9.0407301127.52fa1854@posting.google.com...
I recently acquired a Gould 2608 oscilloscope that I have several
questions about.

First is the fact that the imputs use a connector that I have never
seen before. They almost look like a push on F-connector but are not.
Does anyone have any ideas where to go to get probes that would fit
this apparently Gould specific connector?

Second, does anyone know where the USA contact for Gould is located?

I have done the usual Google searches with no results so any
information would be appreciated.

Thanks in advance.

TMT

 

[Rich Grise]

Tom MacIntyre wrote:

On Fri, 30 Jul 2004 21:15:55 GMT, "Tom Del Rosso"
tdnews01@att.net.invalid> wrote:

"Ken Taylor" <ken@home.nz> wrote in message
news:4JoOc.7106$N77.369727@news.xtra.co.nz
--
I have a chess computer here at home that uses a 6502. Plays a crap
game, and mighty slowly, but a chess computer it is!

In '78-'79 Popular Electronics had a computer chess project with a
"2650", which I remember noticing was a 6502 with the digits rearranged.
Apparently it was a completely different CPU.


That was the heart of the KIM unit which I used in EET school, when I
learned machine code.

Tom

My Gawd! You people are children! The machine I first learned machine
language on had t00bZ!

Cheers!
Rich

 

[Steve J. Noll]

Lemo.

See: http://www.oregonanalog.com/pms_info.shtml


Steve J. Noll | Ventura California |
| The Used High-Tech Equipment Dealer Directory
| http://www.big-list.com
| The Peltier Device Information Site:
| http://www.peltier-info.com

 

[Watson A.Name - \"Watt Su]

"news" <news@nospam.net> wrote in message
news:G6xJc.1062$Yx4.845@newssvr17.news.prodigy.com...

I have talked to several friends and clients who didnt have the
original
packaging(who does after 1 month) after the products went
bad/defective.
These incidents happened after 1 month or so ,and they flat out
refused to
even grant a replacement or credit. These were computer components,
Notebook adaptors and stereo equipment. If you must buy from them,
Save the complete packaging in pristine condition for as long as the
warranty is in play.
If you dont, they will refuse you even an exchange. Keep this in mind
before you go there
and know that most larger retailers will promptly issue a credit at
least
for defective products
not in original pristine packaging
CR

I get really sick and tired of every time I buy something there, I have
to wait in line for a salesdroid to finish up selling a cell phone to
someone who hasn't a clue. It takes forever... Paperwork, explanations
of what they're signing, etc. One guy ahead of me waited and waited,
and then asked the droid how long he was going to be. The droid said a
few more minutes, and he just got disgusted and tossed the goods on the
counter and left. I walked back to the shelves and put the couple
things I had back on the pins, and left.

Somehow I get the feeling more and more that they're really not in the
business of selling anything other than cell phones, satellite dishes
and xmas toys. And the 'droids admit it; they have first-hand
experience.

 

[Watson A.Name - \"Watt Su]

"yak" <spam@hormel.com> wrote in message
news:MPG.1b6096025b09b504989b5e@news.easynews.com...

In article <G6xJc.1062$Yx4.845@newssvr17.news.prodigy.com>,
news@nospam.net says...
I have talked to several friends and clients who didnt have the
original
packaging(who does after 1 month) after the products went
bad/defective.
These incidents happened after 1 month or so ,and they flat out
refused to
even grant a replacement or credit. These were computer
components,
Notebook adaptors and stereo equipment. If you must buy from them,
Save the complete packaging in pristine condition for as long as the
warranty is in play.
If you dont, they will refuse you even an exchange. Keep this in
mind
before you go there
and know that most larger retailers will promptly issue a credit at
least
for defective products
not in original pristine packaging
CR

Heh, the ONLY things I buy at radio shack are little electronics
components (fuses, diodes, transistors, switches, etc.). That's all
the
store is good for.

You mean WAS good for. They have cut back on their stock of same parts
to the point where the stores have a small fraction of the selection
they used to have. Now you have to order those parts thru the catalog
or online. :-(

 

[Watson A.Name - \"Watt Su]

"Mantra" <mymantra@yahoo.com> wrote in message
news:a6403f08.0407151750.578a6f65@posting.google.com...

Gnarlodious <gnarlodious@yahoo.com> wrote in message
news:<BD1C23C4.51B51%gnarlodious@yahoo.com>...
I bought a small item at Radio Shack several months ago, and the
clerk asked
the man in front of me for his social security number. He began
reciting it
in public but I interrupted him, telling him she didn't need his SS#
and he
should never publicly announce it. A loud argument ensued with the
clerk
bringing out the manager. The manager assured me it was official RS
policy
to take SS# during a checkout, even for cash. He also told me I had
no right
to tell customers not to publicly announce their SS# while in line.
The
argument escalated and the manager called the police.

I got out of there real quick.

If this is true, I wouldn't have left. Naturally the manager's claim
is utter BS. It would have been fun to call his bluff and let the
police come. There's a minor issue of 1st Amendment, and then half a
dozen criminal and civil cases if the police a dumb enough to take the
manager's side. Even with the store theoretically being "private
property" that fact that it's open to the public pretty much trumps
that argument. And them there's the PR value of calling a press
conference in front of the store to utter ridicule the manager and
corporate HQ. Don't be a wimp next time.

MM

Easy for you to say. Talk's cheap, tell us if you've ever not backed
down in such a situation.

Besides, he got his revenge in the end. The manager was gone.

 

[Grinder]

Watson A.Name - "Watt Sun, the Dark Remover" wrote:

"Wes Groleau" <groleau+news@freeshell.org> wrote in message
news:MeqdnfY6cZ_ZjmrdRVn-hQ@gbronline.com...

Gnarlodious wrote:

I bought a small item at Radio Shack several months ago, and the

clerk asked

the man in front of me for his social security number. He began

reciting it

in public but I interrupted him, telling him she didn't need his SS#

and he

should never publicly announce it. A loud argument ensued with the

clerk

bringing out the manager. The manager assured me it was official RS

policy

Every time I try to buy something there, even if I pay cash,
they try to get my address and phone number. I always have
to argue with them. "You don't need my phone number to send
your stupid catalog, and I don't want the catalog anyway."

But they still argue they need it. Eventually I win or
I walk out with my money and no product.


I just tell them "declined" and they put declined in there.

There's probably someone named Dee Kline that's pissed at you.
http://www.snopes.com/autos/law/noplate.asp

 

[Watson A.Name - \"Watt Su]

"Fuzzie Dice" <nope@nothere.comnot> wrote in message
news:cd90ms62bb9@enews3.newsguy.com...

Wes Groleau wrote:
But I agree about Radio Shack in general. Not a great place to buy.

They *used* to be. Back in the 80s I had a Tandy Color Computer 3 and
also
bought stereo equipment from them and other computer stuff (including
a PC
once). They used to make good on things, packaging or not. I have
noticed
recently that they have went downhill over the years though. Such a
shame.
My problems were that the staff weren't as well informed about their
products as the staff they used to have in the 80s.

My experience is that there is a constant turnover of salesdroids,
mainly because the pay isn't good. They are paid on a commission basis,
and if they don't sell a lot of high profit items like satellite dishes
and cellphones, then they don't make much money.

 

[Watson A.Name - \"Watt Su]

"Wes Groleau" <groleau+news@freeshell.org> wrote in message
news:jYKdna9ntd96j2XdRVn-iQ@gbronline.com...

Fuzzie Dice wrote:

Wes Groleau wrote:
But I agree about Radio Shack in general. Not a great place to buy.

They *used* to be. Back in the 80s I had a Tandy Color Computer 3
and also

!?! Back in the 80's, I bought TRS-80 model I
I also bought the schematics and dumped it
as soon as I discovered how incompetent the designers were.

Back in the 1980s was also the time when I asked for
a BNC connector, and the guy pointed at a wall that
I had already been looking at for a while. After
a little discussion, he finally pulled something
else off the hook, handed it to me, and said
"THIS is a CB connector!"

CoCo was later--and I have no clue whether it was
any good, because by then I was thoroughly prejudiced
against RS.

The impression I got was that the CoCo was a toy. But I boguth a Model
100 and it was a toy, but it was a _portable_ toy. Cost me a thousand
dollars the week it came out.

--
Wes Groleau

Measure with a micrometer, mark with chalk, and cut with an axe.

 

[Watson A.Name - \"Watt Su]

"Obfus Kataa" <vapaa@finhut.fi.example.com> wrote in message
newsine.OSX.4.61.0407161502340.25011@ix.soygnvbwn.wor...

Thu, 15 Jul 2004 (18:28 -0500 UTC) Wes Groleau wrote:

Gnarlodious wrote:
I bought a small item at Radio Shack several months ago, and the
clerk
asked
the man in front of me for his social security number. He began
reciting
it
in public but I interrupted him, telling him she didn't need his
SS# and
he
should never publicly announce it. A loud argument ensued with the
clerk
bringing out the manager. The manager assured me it was official RS
policy

Every time I try to buy something there, even if I pay cash,
they try to get my address and phone number. I always have
to argue with them. "You don't need my phone number to send
your stupid catalog, and I don't want the catalog anyway."

But they still argue they need it. Eventually I win or
I walk out with my money and no product.

RS or Tandy is an arm of the secret government. If you use RS parts
in your
next explosive device, the parts can be traced to your address. Tandy
also
used to ask some very invasive questions in their job interviews which
took
place while the interviewee was attached to a polygraph.

I don't know what country you'e from, but that kind of stuff is illegal
in the U.S.

--
oK+++

 

[kony]

On Sat, 31 Jul 2004 20:16:07 -0700, "Watson A.Name - \"Watt Sun,
the Dark Remover\"" <NOSPAM@dslextreme.com> wrote:

"Obfus Kataa" <vapaa@finhut.fi.example.com> wrote in message
newsine.OSX.4.61.0407161502340.25011@ix.soygnvbwn.wor...
Thu, 15 Jul 2004 (18:28 -0500 UTC) Wes Groleau wrote:

Gnarlodious wrote:
I bought a small item at Radio Shack several months ago, and the
clerk
asked
the man in front of me for his social security number. He began
reciting
it
in public but I interrupted him, telling him she didn't need his
SS# and
he
should never publicly announce it. A loud argument ensued with the
clerk
bringing out the manager. The manager assured me it was official RS
policy

Every time I try to buy something there, even if I pay cash,
they try to get my address and phone number. I always have
to argue with them. "You don't need my phone number to send
your stupid catalog, and I don't want the catalog anyway."

But they still argue they need it. Eventually I win or
I walk out with my money and no product.

RS or Tandy is an arm of the secret government. If you use RS parts
in your
next explosive device, the parts can be traced to your address. Tandy
also
used to ask some very invasive questions in their job interviews which
took
place while the interviewee was attached to a polygraph.

I don't know what country you'e from, but that kind of stuff is illegal
in the U.S.

Is there a law against consensual polygraphs?
I'd imagine their lawyers have kept questioning within legal
boundaries, even if offensive. Certainly the law cannot
effectively eliminate offensive behavior.

 

[Daniel Rudy]

And somewhere around the time of 08/01/2004 08:04, the world stopped and
listened as Gary Reichlinger contributed the following to humanity:

On Sun, 01 Aug 2004 12:42:46 GMT, Daniel Rudy
i0n1v2a3l4i5d6d7c8r9u0d1y2e3m4a5i6l7@n0o1p2a3c4b5e6l7l8s9p0a1m2.3n4e5t6
wrote:



I've ran into a situation where I need to sense a very large flow of
current (100A) at 24VDC or so. This is for a motor supply feed. The
problem that I'm running into is isolation because there is a
microcontroller that is part of the control circuit that electrically
needs to stay away from this line as its powered from a different
source.


It would seem that a 24VDC power supply and a microcontroller
power supply could be configured so that the grounds are connected.
If this were possible, then you could just put your resistors between
the low side of the power circuit and ground and then connect the high
side of the resistors to the ADC on the microcontroller. Even 8 bits
should give you the resolution you are asking for. If the isolation
is definitely required, there are other (more expensive) solutions.

The problem has to do with the surge current. There can be a 70A or
higher current pulse on the surge when the motor kicks on under load.
Furthermore, that much current being suddenly drawn causes inductive
voltabe spikes along the wiring/pcb traces of the motor power circuit.
It is these spikes that I'm trying to keep away from the controller.

2. Wind a couple of turns of the main feed wire onto a torridal core
form. The torrid has a gap cut into it. Inside that gap is a hall
effect device that is epoxied into place. This inherently provides the
galvanic isolation that is required. After signal conditioning, the
analog voltage can be sent directly to a ADC input on the controller.


Allegro Microsystems has prepackaged sensors which operate on
this principal. (I am not sure if they go up to 100 amps.) Another
option is to use a magnetoresistive current sensor. F W Bell and
others offer these units.

I found some, they do.

--
Daniel Rudy

Email address has been encoded to reduce spam.
Remove all numbers, then remove invalid, email, no, and spam to reply.

 

[Peter A Forbes]

On Sun, 01 Aug 2004 12:42:46 GMT, Daniel Rudy
<i0n1v2a3l4i5d6d7c8r9u0d1y2e3m4a5i6l7@n0o1p2a3c4b5e6l7l8s9p0a1m2.3n4e5t6> wrote:

Hello Everyone!

I've ran into a situation where I need to sense a very large flow of
current (100A) at 24VDC or so. This is for a motor supply feed. The
problem that I'm running into is isolation because there is a
microcontroller that is part of the control circuit that electrically
needs to stay away from this line as its powered from a different
source. So far, there are two ways that I'm aware of to do this:

1. Use a very low value resistor (I would need a few in parallel),
sense and amplify the voltage across that. Then feed that into a
voltage to frequency converter so it can be sent across an opto-isolator
and then on to a timer on the microcontroller.

2. Wind a couple of turns of the main feed wire onto a torridal core
form. The torrid has a gap cut into it. Inside that gap is a hall
effect device that is epoxied into place. This inherently provides the
galvanic isolation that is required. After signal conditioning, the
analog voltage can be sent directly to a ADC input on the controller.

I would prefer to use #2 as that would be easier to implement, and it
seems to have a lower parts count. Accuracy in the area of 1 amp
resolution or better, if possible, would be good. Any advise, links,
etc. is appreciated. Thanks.

I think that you can buy these sensors ready-made from people like LEME who use
them in their DC clamp meters.

We had a similar problem with some data loggers, but were able to use an RS 232
Galvanic Isolator between the loggers and the PC. The loggers were battery
powered. We had problems with currents flowing down the RS232 cable between the
PC ground and the equipment ground.

Peter

--
Peter & Rita Forbes
diesel@easynet.co.uk
Engine pages for preservation info:
http://www.oldengine.org/members/diesel

 

[Peter A Forbes]

On Sun, 1 Aug 2004 16:52:05 +0000 (UTC), Peter A Forbes <diesel@easynet.co.uk>
wrote:

I think that you can buy these sensors ready-made from people like LEME who use
them in their DC clamp meters.

Peter

Got names mixed up there, it was HEME (that was subsequently bought by LEM)

www.lem.com

Peter

--
Peter & Rita Forbes
diesel@easynet.co.uk
Engine pages for preservation info:
http://www.oldengine.org/members/diesel

 

[Obfus Kataa]

Sun, 1 Aug 2004 (17:40 -0000 UTC) John Miller wrote:

Obfus Kataa wrote to someone:
Polygraph? It was not illegal in 1978 to use it for employment screening.
Unless you can cite a statute, I do not believe it is currently illegal
(federally) for a private company to ask invasive questions in interviews.

There are quite a number of types of questions which are federally illegal
to ask of potential employees. Most relate to things that could be held to
be discriminatory (for example, just one seemingly innocuous question out
of hundreds you will break the law if you ask is, "do you have children?").
General rule for interviewers who don't want to have to memorize all the
statues is, if the question doesn't relate directly to job requirements,
it's safer not to ask it.

Reasons for the answer's being incorrect or inapplicable:

1. The EEOC regulations apply only to protected classes. You have
no way of knowing whether I am (or rather was) a member in 1978 of
one of those classes. I was not. This reason does not count
against your response.

2. Because of item one, and because having a child does not place one
necessarily in a protected class, the question "do you have children?"
is not illegal; however, the question "do you have children under the
age of 18?" may be. (Title VII of the 1964 Civil Rights Act was in
effect in 1978) The problem with the "children under 18" question
is not that the question, itself, is illegal. The problem is that if
as an employer you have asked this question and then used the answer to
refuse employment of an otherwise eligible candidate, and that person
is in a protected class, you are more likely to be found in violation.
So, by common sense, you should avoid the question. But the laws
passed by Congress to not list questions that are illegal. They define
practices that are illegal. Certain questions may strongly imply
the intent to engage in illegal practices. And evidence of intent may
lead to a potential employee inferring that intent led to discriminatory
practice, thus causing that applicant to file a civil complaint and
or a fair labor practices complaint with the DoL.

3. In the two posts I made, I said the questions were invasive, but I do
not believe they were illegal or would have been judged illegal at the
time. I do not think that it would be illegal today to ask whether
a potential employee has ever used illegal drugs. At that time, I
believe you could ask if a potential employee has ever been investigated
for a crime.

Certain other restrictions do apply for employers that engage in federal
contracts. Certain exemptions are implied as a result of Supreme-Court
rulings related to state employees, but not as regards initial employment
except as it relates to public safety and physical requirements.

--
oK+++
Good people do not need laws to tell them to act responsibly,
while bad people will find a way around the laws.
-Plato
16:05 up 53 days, 17:49, 1 user, load averages: 0.33 0.35 0.25

 

[Jim Adney]

On 31 Jul 2004 01:39:13 -0700 wylbur37nospam@yahoo.com (wylbur37)
wrote:

In other words, can't it be done like the following ?


+--------------+-----------+-----------+---
| | | |
| | | |
power LED-1 LED-2 LED-3
source | | |
| | | |
| | | |
+---resistor---+-----------+-----------+---


And what would be the proper value of the resistor?

(I'm guessing it would be one third of what it was in the first diagram
because the required voltage reduction would be the same but the
effective current draw of the 3-LED assembly would be three times what it
was before.

If this were a perfect world and the 3 LEDs were exactly identical,
then this would work, but LEDs are never exactly alike and one of them
would hog the current, leaving it too brite and the others too dim.

-
-----------------------------------------------
Jim Adney jadney@vwtype3.org
Madison, WI 53711 USA
-----------------------------------------------

 

[Herbert West]

On Thu, 29 Jul 2004 12:28:39 +0100, Paul Burridge
<pb@notthisbit.osiris1.co.uk> wrote:

On Wed, 28 Jul 2004 21:22:44 -0500, "Poker Joker" <Poker@wi.rr.com
wrote:

Here is where your problem lies. You need to give up hope and completely
loose heart. It saves you alot of energy and us alot of money. I'm sure
there is plenty of work collecting garbage or cleaning sewers, so you
should be able to get by just fine.

Plus McDonalds always need more burger flippers. He could maybe clean
the sewers in the daytime and serve at Mac's in the evenings to make
some extra cash. He should remember to thoroughly wash his hands, of
course, every night after clocking-off.

Ummmm... If he's interested, the Dominoes Pizza down the street needs
drivers (as I'm sure most Dominoes do in any city). If he's fast and
the pizza is still hot when he arrives at the customer's premises, he
can make quite a lot extra on tips.

The downside is that Dominoes requires it's drivers to have a recent
model car, insurance, and a clean, valid driver's license for the
state in which he is employed.

And I like the comment about "loose" versus "lose." I'm giggling
hysterically trying to imagine what a person with a "loose heart"
looks like, and the symptoms he's experiencing. <g>

 

[Dan Fraser]

To use a single resistor with several LEDS, put the LEDs in series. However,
unless the LEDs are the same color and from the same batch, the brightness
will vary. Also, the supply voltage has to be high enough to actually light
the series string.

 

[Dan Fraser]

You expect the sales people at RS to know anything about the products. You
had may as well ask for the best wine to go with a Big Mac.

As for requiring a SS number, that is blatantly illegal. Or you can give a
fake one

666-66-6666

Wanna make something of it.

When paying by cash I say the name is.

C. Ash
1313 Mockingbird Lane
Hollywood CA 99666

Again, if they don't like it, they could stuff it.

However, at the local RS, here in Costa Mesa, they no longer ask for name or
address on cash purchases. I think they finally grasped that is the one
thing that really pissed people off about them.

If you need parts to build anything, forget RS.

www.mouser.com

www.digi-key.com

 

[Watson A.Name - \"Watt Su]

"Gary Reichlinger" <reichln@navix.net> wrote in message
news:gs0qg0l92jd0117ig87ke40ak2vn46or0i@4ax.com...

On Sun, 01 Aug 2004 12:42:46 GMT, Daniel Rudy

i0n1v2a3l4i5d6d7c8r9u0d1y2e3m4a5i6l7@n0o1p2a3c4b5e6l7l8s9p0a1m2.3n4e5t6

wrote:


I've ran into a situation where I need to sense a very large flow of
current (100A) at 24VDC or so. This is for a motor supply feed. The
problem that I'm running into is isolation because there is a
microcontroller that is part of the control circuit that electrically
needs to stay away from this line as its powered from a different
source.

It would seem that a 24VDC power supply and a microcontroller
power supply could be configured so that the grounds are connected.
If this were possible, then you could just put your resistors between
the low side of the power circuit and ground and then connect the high
side of the resistors to the ADC on the microcontroller. Even 8 bits
should give you the resolution you are asking for. If the isolation
is definitely required, there are other (more expensive) solutions.


So far, there are two ways that I'm aware of to do this:

1. Use a very low value resistor (I would need a few in parallel),
sense and amplify the voltage across that. Then feed that into a
voltage to frequency converter so it can be sent across an
opto-isolator
and then on to a timer on the microcontroller.

International Rectifier has some prepacked chips that can do
this. They are generally used for higher voltage systems, but should
give you the accuracy you specify.

2. Wind a couple of turns of the main feed wire onto a torridal core
form. The torrid has a gap cut into it. Inside that gap is a hall
effect device that is epoxied into place. This inherently provides
the
galvanic isolation that is required. After signal conditioning, the
analog voltage can be sent directly to a ADC input on the controller.

Allegro Microsystems has prepackaged sensors which operate on
this principal. (I am not sure if they go up to 100 amps.) Another
option is to use a magnetoresistive current sensor. F W Bell and
others offer these units.

Third way. Run the current thru a core of an inductor, which has the
winding for an oscillator. The DC varies the coil's inductance which
changes the freq of oscillation. Isolation is inherent as in the above.