Chip with simple program for Toy

[Michael A. Terrell]

krw wrote:

On Thu, 04 Jun 2009 01:27:34 -0400, "Michael A. Terrell"
mike.terrell@earthlink.net> wrote:


John Fields wrote:

Geez, if that's the best you can do, you're also a loser when it comes
to confrontational rhetoric.

Nothing original, or clever, just the same old time-wasting banal crap
you spew trying to fool yourself into believing that you're in the game.


The only game bret is in is 'Russian Roulette', but the bastard is
too cheap to even buy a single bullet.

I'm sure it wouldn't take long to take up a collection.

I'd skip several meals and risk going into a diabetic coma to send
him a full box. The next problem is that he's too damn stupid to figure
out how to load a gun.


--
You can't have a sense of humor, if you have no sense!

 

[Bret Cahill]

Exactly. �Comrade Cahill is well known to be a Usenet loser.

We can't keep you from spreeing but if you must spree, try to spree
local.

Just shoot up the trailer park.


Bret Cahill

 

[Bret Cahill]

Today's dunce is "Michael A. Terrell"

Because gas is still cheap? Because it isn't in the economic interest
of existing car companies to become commodity manufacturers? What a
silly question.
What a stupid statement. The first problem is the existing power
grid. I heard on the news that 120 billion is needed right now to add
capacity.

We paid that much for overseas oil in the past 10 weeks.

An all electric transportation system would make that a drop
in the money pit.

We don't need to worry about where "drop in the money pit" goes in
the
spread sheet.

This is the most elementary of calculations:

1. the mechanical energy possible with a $3 gallon of fuel is 13 kW-
hr so buying fuel for 13 kW 24/7/52 of power over the next 50 years
costs $3/hr X 24 hours X 356 days/yr X 50 yr =

$1.3 million dollars

2. a power plant costs $2 - $4 /watt so running a 13 kW electric
motor over the next 50 years would cost

$26,000 - $53,000.

Now compare $26,000 - $53,000 in power plant cost to $1.3 million in
fuel costs.

The power plant capital cost pays for itself in fuel savings by a
factor of 20 - 50 times over.

And that's assuming fuel will remain at $3/gallon (yesterday's price
for unleaded in LA).

More realistically the price of fuel will be $10/gallon in 3 years
and
much much more in the not too distant future.

Then the capital cost of the power plant is so negligible compared to
fuel it can be omitted altogether in _any_ spread sheet.

A much larger cost is the operating cost of the plant: $500,000 -
$800,000 for the 13 kW over the 50 year period.

If you transport the electricity by charging batteries, the cost of
13
kW power over the next 50 years will be $1.7 million to $2 million.

It's cheaper to buy fuel at $3/gallon.


.. . .

You've been sold a bill of goods, and haven't done
any research.

Anytime you want to sue in small claims court to recover any tuition
you may have squandered on some scam electronics trade school, I'll
be
glad to testify on your behalf.


Bret Cahill

 

[Anonymous Remailer]

In article <b7bn25l0qvfu8dcr9982i4ebehmsllfdaa@4ax.com>
Johnny Asia <engram52318@mypacks.net> wrote:

A Jew in Israel says , "white power, fuck the niggers"

American Jew says, "he deserves to get shot"


http://www.youtube.com/watch?v=Uxt9HwfPwPo

Max Blumenthal: Feeling the Hate In Jerusalem on Eve of Obama's Cairo
Address

Max Blumenthal writes: On the eve of President Barack Obama’s address
to the Muslim world from Cairo, Egypt, I stepped out onto the streets
of Jerusalem with my friend Joseph Dana to interview young Israelis
and American Jews about their reaction to the speech. We encountered
rowdy groups of beer sodden twenty-somethings, many from the United
States, and all eager to vent their visceral, even violent hatred of
Barack Obama and his policies towards Israel. Usually I offer a brief
commentary on my video reports, but this one requires no comment at
all. Quite simply, it contains some of the most shocking footage I
have ever filmed. Watch it and see if you agree. (Warning: this video
contains profanity and material offensive to just about anyone.)

http://www.youtube.com/watch?v=Uxt9HwfPwPo


This is the same kind of Israeli hatred and treachery
that Palestinians have endured since Israel stole their land:


Video
http://www.liveleak.com/view?i=e1842edc4f


The settler says:

"you and your Jesus can kiss my ass!"

"we killed jesus and we're proud of it"

"we're going to kill you and the Palestinians"

"this is my land, god gave it to me!"



British film crew threatened by Israeli "settler" in Hebron

Tel Rumeida is a small Palestinian neighborhood deep in the West Bank
city of Hebron. Palestinian families from whom these settlers occupied
lands, live directly next to these settlers and are often virtual
prisoners in their homes, subject to the settlers' violent attacks and
destruction of property.


--------------------


Hebron settlers assault internationals and Israeli
http://www.youtube.com/watch?v=P0ZVYO0R4p8

Settler riot in Tel Rumeida (occupied Palestine) part 2
http://www.youtube.com/watch?v=zkVDyfuvhDE

Settler children in Tel Rumeida (occupied Palestine) part 3
http://www.youtube.com/watch?v=OO28p-yaTVY&mode=related&search=





+

Pucker your lips for the Apocalypse!

Johnny Asia, Guitarist from the Future


http://johnnyasia.com

-

His own staff will be his downfall. They know he's a kenyan
muslim traitor.

 

[noauth]

In article <1_PWl.20064$hc1.5963@flpi150.ffdc.sbc.com>
"Bob Eld" <nsmontassoc@yahoo.com> wrote:

"Cyberiade.it Anonymous Remailer" <anonymous@remailer.cyberiade.it> wrote in
message news:fba84748c2cf622bd2e21a2b658526d1@remailer.cyberiade.it...
Cut....

In article <dnGWl.12520$im1.9870@nlpi061.nbdc.sbc.com
Where were all the arrests for the hundreds of liberal threats
to kill Bush? Assassination theats are only taken seriously if
the target is a liberal Kenyan nigger, is that it?

Name ONE liberal who threatened Bush. We didn't like Bush and thought him an
incompetent war monger but nobody talked of assassinating him certainly not
a bunch of school kids.

http://groups.google.com/groups/search?hl=en&q=kill+bush

It's not my fault you're too stupid to find them yourself.

As the racist republican bigot you are, I see you hiding behind anonymity.
What's the matter, too chicken-shit to use your name and ISP.

Whine powerless little liberal. Nothing for you to netkop is
there?

You boy Clinton started this whole Iraq mess. Apparently, like
most liberals, he wasn't man enough to finish the job.

http://www.cnn.com/US/9812/16/clinton.iraq.speech/

WASHINGTON (CNN) -- From the Oval Office, President Clinton told
the nation Wednesday evening why he ordered new military strikes
against Iraq.

The president said Iraq's refusal to cooperate with U.N. weapons
inspectors presented a threat to the entire world.

"Saddam (Hussein) must not be allowed to threaten his neighbors
or the world with nuclear arms, poison gas or biological
weapons," Clinton said.

Operation Desert Fox, a strong, sustained series of attacks,
will be carried out over several days by U.S. and British
forces, Clinton said.

"Earlier today I ordered America's armed forces to strike
military and security targets in Iraq. They are joined by
British forces," Clinton said.

"Their mission is to attack Iraq's nuclear, chemical and
biological weapons programs and its military capacity to
threaten its neighbors," said Clinton.

Clinton also stated that, while other countries also had weapons
of mass destruction, Hussein is in a different category because
he has used such weapons against his own people and against his
neighbors.


'Without delay, diplomacy or warning'

The Iraqi leader was given a final warning six weeks ago,
Clinton said, when Baghdad promised to cooperate with U.N.
inspectors at the last minute just as U.S. warplanes were headed
its way.

"Along with Prime Minister (Tony) Blair of Great Britain, I made
it equally clear that if Saddam failed to cooperate fully we
would be prepared to act without delay, diplomacy or warning,"
Clinton said.

The president said the report handed in Tuesday by Richard
Butler, head of the United Nations Special Commission in charge
of finding and destroying Iraqi weapons, was stark and sobering.

Iraq failed to cooperate with the inspectors and placed new
restrictions on them, Clinton said. He said Iraqi officials also
destroyed records and moved everything, even the furniture, out
of suspected sites before inspectors were allowed in.

"Instead of inspectors disarming Saddam, Saddam has disarmed the
inspectors," Clinton said.

"In halting our airstrikes in November, I gave Saddam a chance --
not a license. If we turn our backs on his defiance, the
credibility of U.S. power as a check against Saddam will be
destroyed," the president explained.


Strikes necessary to stunt weapons programs

Clinton said he made the decision to strike Wednesday with the
unanimous agreement of his security advisors.

Timing was important, said the president, because without a
strong inspection system in place, Iraq could rebuild its
chemical, biological and nuclear programs in a matter of months,
not years.

"If Saddam can cripple the weapons inspections system and get
away with it, he would conclude the international community, led
by the United States, has simply lost its will," said Clinton.
"He would surmise that he has free rein to rebuild his arsenal
of destruction."

Clinton also called Hussein a threat to his people and to the
security of the world.

"The best way to end that threat once and for all is with a new
Iraqi government -- a government ready to live in peace with its
neighbors, a government that respects the rights of its people,"
Clinton said.

Such a change in Baghdad would take time and effort, Clinton
said, adding that his administration would work with Iraqi
opposition forces.

Clinton also addressed the ongoing impeachment crisis in the
White House.

"Saddam Hussein and the other enemies of peace may have thought
that the serious debate currently before the House of
Representatives would distract Americans or weaken our resolve
to face him down," he said.

"But once more, the United States has proven that although we
are never eager to use force, when we must act in America's
vital interests, we will do so."

 

[Roy Blankenship]

"noauth" <anon@remailer.gabrix.ath.cx> wrote in message
news:da72997f55dc3d8526bf020a654d2857@remailer.gabrix.ath.cx...

In article <1_PWl.20064$hc1.5963@flpi150.ffdc.sbc.com
"Bob Eld" <nsmontassoc@yahoo.com> wrote:


"Cyberiade.it Anonymous Remailer" <anonymous@remailer.cyberiade.it
wrote in
message news:fba84748c2cf622bd2e21a2b658526d1@remailer.cyberiade.it...
Cut....

In article <dnGWl.12520$im1.9870@nlpi061.nbdc.sbc.com
Where were all the arrests for the hundreds of liberal threats
to kill Bush? Assassination theats are only taken seriously if
the target is a liberal Kenyan nigger, is that it?

Name ONE liberal who threatened Bush. We didn't like Bush and thought
him an
incompetent war monger but nobody talked of assassinating him certainly
not
a bunch of school kids.

http://groups.google.com/groups/search?hl=en&q=kill+bush

It's not my fault you're too stupid to find them yourself.

As the racist republican bigot you are, I see you hiding behind
anonymity.
What's the matter, too chicken-shit to use your name and ISP.

Whine powerless little liberal. Nothing for you to netkop is
there?

You boy Clinton started this whole Iraq mess. Apparently, like
most liberals, he wasn't man enough to finish the job.

http://www.cnn.com/US/9812/16/clinton.iraq.speech/

WASHINGTON (CNN) -- From the Oval Office, President Clinton told
the nation Wednesday evening why he ordered new military strikes
against Iraq.

The president said Iraq's refusal to cooperate with U.N. weapons
inspectors presented a threat to the entire world.

"Saddam (Hussein) must not be allowed to threaten his neighbors
or the world with nuclear arms, poison gas or biological
weapons," Clinton said.

Operation Desert Fox, a strong, sustained series of attacks,
will be carried out over several days by U.S. and British
forces, Clinton said.

"Earlier today I ordered America's armed forces to strike
military and security targets in Iraq. They are joined by
British forces," Clinton said.

"Their mission is to attack Iraq's nuclear, chemical and
biological weapons programs and its military capacity to
threaten its neighbors," said Clinton.

Clinton also stated that, while other countries also had weapons
of mass destruction, Hussein is in a different category because
he has used such weapons against his own people and against his
neighbors.


'Without delay, diplomacy or warning'

The Iraqi leader was given a final warning six weeks ago,
Clinton said, when Baghdad promised to cooperate with U.N.
inspectors at the last minute just as U.S. warplanes were headed
its way.

"Along with Prime Minister (Tony) Blair of Great Britain, I made
it equally clear that if Saddam failed to cooperate fully we
would be prepared to act without delay, diplomacy or warning,"
Clinton said.

The president said the report handed in Tuesday by Richard
Butler, head of the United Nations Special Commission in charge
of finding and destroying Iraqi weapons, was stark and sobering.

Iraq failed to cooperate with the inspectors and placed new
restrictions on them, Clinton said. He said Iraqi officials also
destroyed records and moved everything, even the furniture, out
of suspected sites before inspectors were allowed in.

"Instead of inspectors disarming Saddam, Saddam has disarmed the
inspectors," Clinton said.

"In halting our airstrikes in November, I gave Saddam a chance --
not a license. If we turn our backs on his defiance, the
credibility of U.S. power as a check against Saddam will be
destroyed," the president explained.


Strikes necessary to stunt weapons programs

Clinton said he made the decision to strike Wednesday with the
unanimous agreement of his security advisors.

Timing was important, said the president, because without a
strong inspection system in place, Iraq could rebuild its
chemical, biological and nuclear programs in a matter of months,
not years.

"If Saddam can cripple the weapons inspections system and get
away with it, he would conclude the international community, led
by the United States, has simply lost its will," said Clinton.
"He would surmise that he has free rein to rebuild his arsenal
of destruction."

Clinton also called Hussein a threat to his people and to the
security of the world.

"The best way to end that threat once and for all is with a new
Iraqi government -- a government ready to live in peace with its
neighbors, a government that respects the rights of its people,"
Clinton said.

Such a change in Baghdad would take time and effort, Clinton
said, adding that his administration would work with Iraqi
opposition forces.

Clinton also addressed the ongoing impeachment crisis in the
White House.

"Saddam Hussein and the other enemies of peace may have thought
that the serious debate currently before the House of
Representatives would distract Americans or weaken our resolve
to face him down," he said.

"But once more, the United States has proven that although we
are never eager to use force, when we must act in America's
vital interests, we will do so."

You are even dumber than I first thought. Where have you been? All of this
crap you are posting has been through here and effectively disputed years
ago. Geezus, did you just get out of prison or something?

 

In sci.physics Bret Cahill <BretCahill@aol.com> wrote:

http://www.beaconpower.com/files/SEM_20MW.pdf

This particular application is intended to provide a short term
alternative to the use of spinning reserve for load fluctuations. �As
such it could also compensate for short term fluctuations in solar or
wind generation, but it would not mitigate the need for full backup for
longer term (hours to days) unavailability of sun or wind. �It would
however mean that less of that backup generation would need to be
available as spinning reserve.

It's good in that it can be kept spinning with green power but they
don't give any indication as to the magnitude of that loss or how it
could be evaluated for ROI.

If the flywheel is constantly "charging/discharging" it won't be such
a big deal.

If it must be kept spinning for weeks and weeks between a single hour
of activity then it isn't such a great deal.

In any event the utility doesn't want to screw around with batteries.


Bret Cahill

Such things are meant to provide frequency and phase stability, not
backup power.



--
Jim Pennino

Remove .spam.sux to reply.

 

[Bill Ghrist]

Bret Cahill wrote:

http://www.beaconpower.com/files/SEM_20MW.pdf

This particular application is intended to provide a short term
alternative to the use of spinning reserve for load fluctuations. �As
such it could also compensate for short term fluctuations in solar or
wind generation, but it would not mitigate the need for full backup for
longer term (hours to days) unavailability of sun or wind. �It would
however mean that less of that backup generation would need to be
available as spinning reserve.

It's good in that it can be kept spinning with green power but they
don't give any indication as to the magnitude of that loss or how it
could be evaluated for ROI.

Costs are addressed in this report:
Cost Comparison for a 20 MW Flywheel-based Frequency Regulation Power Plant
http://www.beaconpower.com/files/KEMA_Report_Cost_Comparisons_Nov%202007.pdf

If the flywheel is constantly "charging/discharging" it won't be such
a big deal.

If it must be kept spinning for weeks and weeks between a single hour
of activity then it isn't such a great deal.

Frequency regulation is an on-going activity. Time between changes is
more likely to be measured in seconds or minutes than in hours or days.

In any event the utility doesn't want to screw around with batteries.


Bret Cahill

 

[Bret Cahill]

http://www.beaconpower.com/files/SEM_20MW.pdf

This particular application is intended to provide a short term
alternative to the use of spinning reserve for load fluctuations. �As
such it could also compensate for short term fluctuations in solar or
wind generation, but it would not mitigate the need for full backup for
longer term (hours to days) unavailability of sun or wind. �It would
however mean that less of that backup generation would need to be
available as spinning reserve.

It's good in that it can be kept spinning with green power but they
don't give any indication as to the magnitude of that loss or how it
could be evaluated for ROI.

If the flywheel is constantly "charging/discharging" it won't be such
a big deal.

If it must be kept spinning for weeks and weeks between a single hour
of activity then it isn't such a great deal.

In any event the utility doesn't want to screw around with batteries.


Bret Cahill

 

[John G.]

"Greegor" <Greegor47@gmail.com> wrote in message
news:e0ef6b70-d976-4a02-ba13-ae188df0a436@y17g2000yqn.googlegroups.com...

2 Mil wouldn't BUY much of this.
It's just for a feasability study, right?

What do they use/did they use before?
Don't they just sync up the turbines themselves?

Is this needed because of supplies coming from
various and not too predictable sources?

Like wind turbines on a calm day or solar panels ona cloudy day.

Long live steam!

 

[Greegor]

2 Mil wouldn't BUY much of this.
It's just for a feasability study, right?

What do they use/did they use before?
Don't they just sync up the turbines themselves?

Is this needed because of supplies coming from
various and not too predictable sources?

 

[Bill Ghrist]

Greegor wrote:

2 Mil wouldn't BUY much of this.
It's just for a feasability study, right?

What do they use/did they use before?
Don't they just sync up the turbines themselves?

Is this needed because of supplies coming from
various and not too predictable sources?

Generally this is needed primarily for the constant changes in system
loading. Starting a (steel) rolling mill motor, for example, can draw
multiple megawatts of power. For every increase or decrease in power
usage on the grid the generation must increase or decrease by the same
amount. If the system load exceeds the system generation the power line
frequency will decrease (all the generators will slow down). If the
system generation exceeds the system load the frequency will increase
(all the generators will speed up). Regulating system frequency is
therefore the same thing as regulating system generation to match system
load. A less frequent, although larger magnitude, effect is the loss
(trip) of a generating unit, which is a huge immediate mismatch between
generation and load. As solar, and especially wind, power becomes more
prevalent, variations on the generation side will become an increasing
factor.

Traditionally this has been handled by making sure that some of the
generators are online at less that full load, therefore they are
available very quickly to increase or decrease generation as needed to
compensate for changes in load (or generation); this is called "spinning
reserve." There are some drawbacks of this. Generating units operate
less efficiently at partial load. Some units are kept at minimal load
to provide for large changes. In both cases, especially the latter,
fuel is being wasted and more wear is occurring than if they operated at
full load or were shut down entirely. Also the response time of many
generators is less than optimal, especially in the case of alternating
increases and decreases.

Some advantages of a flywheel system are that the response time and
energy efficiency are better than "spinning reserve." Battery systems
have similar advantages, although their efficiency is not quite as good
as flywheels. The disadvantage of flywheel and battery systems is that
their ability to source or sink power is limited by their energy storage
capacity. They are therefore good for short term frequency regulation
(time scale of minutes), but cannot provide long term power for things
like unit trips, overcast days (solar power), or calm weather (wind power).

 

[John Stafford]

On 6/11/09 3:13 PM, in article
18f41626-92f8-4554-9fc5-03d7429362d6@s38g2000prg.googlegroups.com, "Bret
Cahill" <BretCahill@aol.com> wrote:

http://www.beaconpower.com/files/SEM_20MW.pdf

This particular application is intended to provide a short term
alternative to the use of spinning reserve for load fluctuations. �As
such it could also compensate for short term fluctuations in solar or
wind generation, but it would not mitigate the need for full backup for
longer term (hours to days) unavailability of sun or wind. �It would
however mean that less of that backup generation would need to be
available as spinning reserve.

It's good in that it can be kept spinning with green power but they
don't give any indication as to the magnitude of that loss or how it
could be evaluated for ROI.

If the flywheel is constantly "charging/discharging" it won't be such
a big deal.

If it must be kept spinning for weeks and weeks between a single hour
of activity then it isn't such a great deal.

It is intended to regulate current - as in storing peaks, regulating the
wave.

 

[Baron]

Richard wrote:

6 capacitors 60 farad @ 2.7V EACH in serie, then they parallel with a
0.5
farad 16V. I don't see how you can get 60 farad out of this circuit.
The
maximum you can get from this circuit is 10.5 Farad. How can they
call
this a 60 Farad? No wonder why I am not getting the power it's
supposed to
hold. I bought this funky Lanzar600 hybrid capacitor, and my voltage
meter
shows its voltage drops fast!! Because it looks like one of the 6
capacitors felt off the PCB, and the 0.5farad hardware doesn't hold it
tight niether, so I think I'm getting 10 farad if I'm not wrong or
less.

I thought the formula is supposed to be =
1/((1/C1)+(1/C2)+(1/C3)+(1/C4)+(1/C5)+(1/C6)) = ResultA in parallel
with C7(0.5farad) but C7 is not connected, I should end up with 10
farad? or 0.5 farad?

Well there is nowt wrong with your sums. ;-)

Sounds like a fraud product to me unless if I'm mistaken. I need you
experts to tell me if my thinking is wrong.

Thanks.

--
Best Regards:
Baron.

 

[Hammy]

On Thu, 02 Jul 2009 09:05:15 +0100, Terry Pinnell
<terrypinDELETE@THESEdial.pipex.com> wrote:

Not 'electronics', so excuse me, but could someone on that side of the
pond please confirm the type of mains socket I'm likely to find during
an upcoming holiday in the 'Canadian Rockies' please? FWIW, our
hotels/Lodges will be in Calgary, Banff, Lake Louise, Jasper and
Kananaskis Village, although presumably the days of local variations
in appliance outlets are long past?

The AC-DC adapter for most of the gadgets I'll be taking specify
'100-240V', so no issues there. But one exception is my Nokia mobile
phone. Before I look around for a 110V version, what's the current
status of coverage of UK mobiles in Canada please?

I'm Canadian living in Ontario.

I also lived in Germany for 8 years. I visited some relatives in the
UK nice country friendly people.

If you use the same round outlet plugs that they use in Germany you
can buy adapters for your plugs. Just make sure they can operate off
120VAC, 60Hz, nominal.

As far as phones go it may be cheaper to get yourself a cheap phone
here rather then paying the roaming cost that was already mentioned.
Usually someone has them on sale. Or leave it at home and just use
landlines. Your on vacation do you really want your cell phone with
you.

 

[Terry Pinnell]

Hammy <spamme@hotmail.com> wrote:

On Thu, 02 Jul 2009 09:05:15 +0100, Terry Pinnell
terrypinDELETE@THESEdial.pipex.com> wrote:

Not 'electronics', so excuse me, but could someone on that side of the
pond please confirm the type of mains socket I'm likely to find during
an upcoming holiday in the 'Canadian Rockies' please? FWIW, our
hotels/Lodges will be in Calgary, Banff, Lake Louise, Jasper and
Kananaskis Village, although presumably the days of local variations
in appliance outlets are long past?

The AC-DC adapter for most of the gadgets I'll be taking specify
'100-240V', so no issues there. But one exception is my Nokia mobile
phone. Before I look around for a 110V version, what's the current
status of coverage of UK mobiles in Canada please?


I'm Canadian living in Ontario.

I also lived in Germany for 8 years. I visited some relatives in the
UK nice country friendly people.

If you use the same round outlet plugs that they use in Germany you
can buy adapters for your plugs. Just make sure they can operate off
120VAC, 60Hz, nominal.

As far as phones go it may be cheaper to get yourself a cheap phone
here rather then paying the roaming cost that was already mentioned.
Usually someone has them on sale.

Thanks Hammy, appreciate the advice.

Or leave it at home and just use
landlines. Your on vacation do you really want your cell phone with
you.

Walking holiday on mountain trails...

--
Terry, East Grinstead, UK

 

[Wes]

"N_Cook" <diverse@tcp.co.uk> wrote:

Bob Engelhardt <bobengelhardt@comcast.net> wrote in message
news:h2h72i02r8p@news6.newsguy.com...
In other words, a typical evening in the shop.

http://home.comcast.net/~bobengelhardt/HandPuller.jpg

It's for pulling the hand off a dial indicator. A teeny tiny gear
puller. I should have included a size reference in the picture: it's
1/2" high x 3/4" wide. The tip of the pusher is .030" more or less.
It's a 1/16" drill bit ground down.

It was fun.

Bob


I'm not a mechanical engineer , but electronics and often need to
form splined slots to round aluminium potentiometer shaft, to take splined
insert knobs. Starting with a standard, neat little, pipe cutter
http://home.graffiti.net/diverse:graffiti.net/spliner.jpg
The pattern repeats for only one diameter and a certain
degree of intrusion. Aiming here for 16 around a nominal 6mm spindle.
Proof the concept works. Robbed the steel gripper wheel from a butterfly can
opener, sharpened the points a bit and opened out the central hole. Mounted
in the pipe cutter and produced a neat ring of indents. These were about 2mm
apart and 7 equally spaced around, when cutter advanced far enough in. So a
cog with 1mm spacing should work even easier as long as not too wide. Actual
splined shafts have a 1mm spacing and 16 around.
If nothing else a thin approx 1mm tooth spacing cog from a clockwork clock
mechanism would make an excellent way of marking pot shafts before making
axial cuts with a grind wheel.
I've opened out the slot in a Rolson pipe cutter from 3.5mm to just over 5mm
and it will now hold
neatly and freely rotating, a 16mm diameter x 5 mm ball race.
I know I can grind into the outer race with a Dremmel and thin disc
(freehand) and cutting 1mm spaced teeth is possible as proved by cutting
,freehand so rough, some 1mm spaced teeth around a steel washer. Running a
24 TPI hacksaw tightly around a pot shaft produced a ring of about 19 small
indents, so 1mm is about right for 16. Next a bit of trig to find a whole
number of rotations into 16 mm diameter to give about 1mm spacing.
Too many belts in the lathe drive train. Settled on a doubled large cable
tie around the chuck, clamped to the lathe bed, as a brake and
anti-backlash. And marking around the chuck 50 divisions covered with a
needle, as indicator, on an arm to a magnetic base. Pulling at the motor V
belt to step round. Mounted the Dremmel on 3 short pieces of Dexion to set
on the tool post with a 45 degree set. 3 rounds of cuts to get to final
profile.
Next time I will spend more time fiddling around DTI setting in the 4-jaw
before starting as there was eccentricity.
There is a lunate form to the cutting edges, maybe due to flexing of the
0.6mm thick grinding disc or I did not pay attention to changing direction
of cuts on "odd" and "even" teeth on each pass. Perhaps I should have done
another round of cuts but at the previous depth setting to cut into the
lunate form more. Perhaps it was due to axial play on the Dremmel. Anyway it
works well enough for this purpose. No more than 5mm splining or the
tightening force would be more than finger force on the knurled head bolt
and the aluminium of the holding frame would snap with anything more than
finger force. It is possible to re-engage the spliner further along, synched
with the first cut to form extended splines.
In use leave the pot spindle full length so the 2 round rollers of the
existing pipe cutter can react against the extended shaft, and
hold the free end of the shaft with moplegrips in case the
back torque is too high and the pot end stop breaks up. Afterwards cut to
length and the diametrical cut. Remember the length is back to the
mounting face, as bush length varies. For the slot
start with thin grindwheel in Dremmel and complet with a hacksaw.
If the slot needs narrowing place some strip in the slot before squashing
or you will have no control it and will fully squash.
16 evenly spaced cuts around the pot shaft
in the bottom view. If not deep enough then at least a good accurate guide
for starting some deeper cuts done freehand with a Dremmel. Didn't think to
measure the diameter of the cutting disc before starting and the others vary
in diameter, but by comparing to them, somwhere between 0 and 0.2mm erosion
of diameter in use
I like a challenge and may learn something along the way. A week ago , if
someone asked me - can you cut a 0.5mm wide slot in the steel of a ball
race, using mundane equipment, I would have said no.

That is neat, I don't normally xpost but I took the liberty to xpost it untrimmed to
sci.electronics.basics . Might help the spam to content ratio.

Wes

 

[Wes]

Tim Harig <usernet@ilthio.net> wrote:

On 2009-07-02, Phil Hobbs wrote:
Please see my reply "Correction Re:The Art of Electronics":

http://groups.google.com/group/sci.electronics.basics/msg/01c865b99cdcace8

Sorry, I made a mistake. I was thinking of a different book.

I sure hope so. That book is awesome along with an ARRL handbook which you can get on cd
unlike TAOE.

Wes
--
"Additionally as a security officer, I carry a gun to protect
government officials but my life isn't worth protecting at home
in their eyes." Dick Anthony Heller

 

[Wes]

Tim Harig <usernet@ilthio.net> wrote:

On 2009-07-02, Phil Hobbs Wrote:
You're nuts.

Please see my reply "Correction Re:The Art of Electronics":

http://groups.google.com/group/sci.electronics.basics/browse_frm/thread/2c74b8de9ee334e7/35335d737f8f26ec?tvc=1#35335d737f8f26ec

Sorry, I made a mistake. I was thinking of a different book.

It is a brave new world, cancels are a waste of time. Oh for the old days when usenet was
civilized.

Wes

 

[John G.]

"Terry Pinnell" <terrypinDELETE@THESEdial.pipex.com> wrote in message
news:qa3q45l7rqnlua6atqv5uuie5krsc90ltf@4ax.com...

Hammy <spamme@hotmail.com> wrote:

On Thu, 02 Jul 2009 09:05:15 +0100, Terry Pinnell
terrypinDELETE@THESEdial.pipex.com> wrote:

Not 'electronics', so excuse me, but could someone on that side of the
pond please confirm the type of mains socket I'm likely to find during
an upcoming holiday in the 'Canadian Rockies' please? FWIW, our
hotels/Lodges will be in Calgary, Banff, Lake Louise, Jasper and
Kananaskis Village, although presumably the days of local variations
in appliance outlets are long past?

The AC-DC adapter for most of the gadgets I'll be taking specify
'100-240V', so no issues there. But one exception is my Nokia mobile
phone. Before I look around for a 110V version, what's the current
status of coverage of UK mobiles in Canada please?


I'm Canadian living in Ontario.

I also lived in Germany for 8 years. I visited some relatives in the
UK nice country friendly people.

If you use the same round outlet plugs that they use in Germany you
can buy adapters for your plugs. Just make sure they can operate off
120VAC, 60Hz, nominal.

As far as phones go it may be cheaper to get yourself a cheap phone
here rather then paying the roaming cost that was already mentioned.
Usually someone has them on sale.

Thanks Hammy, appreciate the advice.

Or leave it at home and just use
landlines. Your on vacation do you really want your cell phone with
you.

Walking holiday on mountain trails...

--
Terry, East Grinstead, UK

If you go walking in Australia (and maybe Canada) you may well need a
SatPhone because the coverage away from main centres is not that great.

Canada is bigger than Australia and so you will be surprised by the
distances sometimes.

John G.