Chip with simple program for Toy

[Michael A. Terrell]

"Ron M." wrote:

Ye olde PL-259. How I despised those things.

They are OK, if you know how to use them. With RG8, I would tin the
braid, then use a small tubing cutter to trim it to the right length.
Then I would drill the plating out of the four holes before soldering
the shell to the braid. I never had one fail, when I used that method.
Of course, it made it difficult to reuse a connector without heating the
shell over an open flame for a few seconds so that you could pull out
the old braid.

I had some CBer swear that he could pull the PL259 off of any piece
of coax. You should have seen his hands after he tried it on one of my
cables.

 

[Ralph Mowery]

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:m9mdnav3Wty8QkzLnZ2dnUU7-UGdnZ2d@earthlink.com...

"Ron M." wrote:

Ye olde PL-259. How I despised those things.


They are OK, if you know how to use them. With RG8, I would tin the
braid, then use a small tubing cutter to trim it to the right length.
Then I would drill the plating out of the four holes before soldering
the shell to the braid. I never had one fail, when I used that method.
Of course, it made it difficult to reuse a connector without heating the
shell over an open flame for a few seconds so that you could pull out
the old braid.

I switched to the silver plated type and usually put in a few drops of
liquid flux to help out.

For the last several years I switched over to the crimp on types and have
not had any problems with them.

I doubt the connectors were ever designed to have much force applied to
them. If I use them at an antenna I find a way to take much of the force
off the connector.

 

[whit3rd]

On Sunday, February 28, 2016 at 9:50:50 AM UTC-8, Jim Thompson wrote:

On Fri, 26 Feb 2016 11:26:40 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:

I have made a compilation of the various Debounce circuits ...

All debounce circuits using inverter/buffers with switches are just
variations of classic CMOS latches/flops, dating back nearly 50 years
ago...

Eccles and Jordan's flip-flop was published in 1918; I'd make that 98 years,
though mechanical toggles, with similar feedback character, go back further.

 

[Jim Thompson]

On Sun, 28 Feb 2016 14:10:56 -0800 (PST), whit3rd <whit3rd@gmail.com>
wrote:

On Sunday, February 28, 2016 at 9:50:50 AM UTC-8, Jim Thompson wrote:
On Fri, 26 Feb 2016 11:26:40 -0700, Jim Thompson
To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:

I have made a compilation of the various Debounce circuits ...

All debounce circuits using inverter/buffers with switches are just
variations of classic CMOS latches/flops, dating back nearly 50 years
ago...

Eccles and Jordan's flip-flop was published in 1918; I'd make that 98 years,
though mechanical toggles, with similar feedback character, go back further.

Indeed!

...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: skypeanalog | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

 

[whit3rd]

On Thursday, March 3, 2016 at 4:17:36 PM UTC-8, Jim Thompson wrote:

Anyone made their own LED lamp?

So I'm pondering... how do I build a super efficient LED lamp with
~2000 lumens? (I have lots of volume, so a big inductor is easy to
fit in... I just need low dissipation.)

LEDs are maybe 10% efficient, so the important feature isn't the inductor
size, but the heatsink behind the LED die. I have a so-called 10W LED
that runs very brightly at 3W, that enjoys a surplus Pentium heatsink, fanless...
For 2000 lumens, Cree MHD-E chips (two of 'em) would
do, and take 18V, 800 mA. Expect to dissipate 13W as heat, and
you'll want to keep junction temperature below 85C.

 

[Jasen Betts]

On 2016-03-04, Jim Thompson <To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:

A client wants to use Skype Whiteboard / IDroo.

Looks gruesome to do sketches with a mouse :-(

Years ago I remember a tablet by Kurta (I actually designed a chipset
for it

Does any such device exist today where you could use a stylus?

yeah, a touch screen or digitiser tablet should just work once you
connect the USB cable.

--
\_(ツ)_

 

On Friday, March 4, 2016 at 1:28:04 PM UTC-5, Jim Thompson wrote:

A client wants to use Skype Whiteboard / IDroo.

Looks gruesome to do sketches with a mouse :-(

Years ago I remember a tablet by Kurta (I actually designed a chipset
for it

Does any such device exist today where you could use a stylus?

...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: skypeanalog | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

Hello Jim, There are 100+ tablet PCs on the market. I think all
can be used with a stylus, if included or not. E.g. Samsung Galaxy S,
Apple iPad, Google Nexus 9, LG G pad X, etc. Take a walk thru a Best
Buy. If you'd like real test results, I can send you some specific
recommendations.
- Rich S.


--


***
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On Friday, March 4, 2016 at 1:28:04 PM UTC-5, Jim Thompson wrote:

A client wants to use Skype Whiteboard / IDroo.

Looks gruesome to do sketches with a mouse :-(

Years ago I remember a tablet by Kurta (I actually designed a chipset
for it

Does any such device exist today where you could use a stylus?

...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: skypeanalog | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

Hello Jim, There are 100+ tablet PCs on the market.
Many have a built-in 'webcam' for videoconferencing.
I think all can be used with a stylus, if included
or not. E.g. Samsung Galaxy S, Apple iPad, Google
Nexus 9, LG G pad X, etc. Take a walk thru a Best
Buy. If you'd like real test results, I can send
you some specific recommendations.
- Rich S.

 

On Sunday, March 6, 2016 at 9:00:09 PM UTC-5, ri...@engineer.com wrote:

On Friday, March 4, 2016 at 1:28:04 PM UTC-5, Jim Thompson wrote:
A client wants to use Skype Whiteboard / IDroo.

Looks gruesome to do sketches with a mouse :-(

Years ago I remember a tablet by Kurta (I actually designed a chipset
for it

Does any such device exist today where you could use a stylus?

...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: skypeanalog | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

Hello Jim, There are 100+ tablet PCs on the market.
Many have a built-in 'webcam' for videoconferencing.
I think all can be used with a stylus, if included
or not. E.g. Samsung Galaxy S, Apple iPad, Google
Nexus 9, LG G pad X, etc. Take a walk thru a Best
Buy. If you'd like real test results, I can send
you some specific recommendations.
- Rich S.

There are also many laptops and desktop monitors with
touchscreen functionality, of course.
-Rich S.

 

On Sun, 06 Mar 2016 14:11:05 -0700, Jim Thompson
<To-Email-Use-The-Envelope-Icon@On-My-Web-Site.com> wrote:

As my newest assignment is now chief cook and bottle-washer I note a
problem...

We don't eat all that much, so, for example a pound of hamburger can
cover two to three meals.

I've buying in quantity, portioning into zip-lock bags and freezing,
but am seeing a lot of freezer burn... the zip-locks bags don't appear
to seal all that well.

Anyone tried one of those Foodsaver (or equivalent) gadgets that draw
air out of a bag, then make a heat seal?

Are they worthwhile, or not?

...Jim Thompson

The bad freezer burn taste is from the food oxidizing. Because a
typical ziplock baggie is not gas tight moisture and oxygen can slowly
diffuse through the plastic, resulting in freezer burn. And a freezer
with a defrost cycle will add to the problem. Vacuum sealer bags are
kinda spendy for small amounts of food, it becomes cheaper to just
throw the food out. What I do for food that I will eat within a year
is to wrap it in plastic wrap and then aluminum foil. The plastic wrap
holds the liquid in and the foil stops gas exchange. Then the food
goes into the deep freeze for long storage or the regular freezer if
it is going to be eaten within about two months. I wrap with the dull
side of the foil out because it is easier to write on with a Sharpie.
For really long term storage I can the food. Canning done properly
will keep food edible for many years, practically forever if kept in
the dark. Some loss of nutrients occurs over time and light exposure
can accelerate this loss as well as changing the taste of the food,
but it will still be edible, even though it might taste bad.
Eric

 

On Thursday, March 3, 2016 at 4:17:36 PM UTC-8, Jim Thompson wrote:

Anyone made their own LED lamp?

Remember this post...

http://www.analog-innovations.com/SED/OfficeFanCCFL.jpg

Well it just croaked and I bought an adapter to get a conventional
threaded socket.

(Funny, the gov't assholes... the fixture came with an 120W equivalent
CCFL... try and buy one now... you can find them, but price and
shipping is exorbitant. And the local Lowe's and Home Depot have only
lower wattages.)

So I'm pondering... how do I build a super efficient LED lamp with
~2000 lumens? (I have lots of volume, so a big inductor is easy to
fit in... I just need low dissipation.)

Suggestions? Pointers?

...Jim Thompson

Maybe it's just a bad capacitor, and you can fix it?

Michael

 

On Tuesday, March 8, 2016 at 1:25:18 PM UTC-8, Jim Thompson wrote:

On Tue, 8 Mar 2016 13:07:05 -0800 (PST), mrdarrett@gmail.com wrote:

On Thursday, March 3, 2016 at 4:17:36 PM UTC-8, Jim Thompson wrote:
Anyone made their own LED lamp?

Remember this post...

http://www.analog-innovations.com/SED/OfficeFanCCFL.jpg

Well it just croaked and I bought an adapter to get a conventional
threaded socket.

(Funny, the gov't assholes... the fixture came with an 120W equivalent
CCFL... try and buy one now... you can find them, but price and
shipping is exorbitant. And the local Lowe's and Home Depot have only
lower wattages.)

So I'm pondering... how do I build a super efficient LED lamp with
~2000 lumens? (I have lots of volume, so a big inductor is easy to
fit in... I just need low dissipation.)

Suggestions? Pointers?

...Jim Thompson



Maybe it's just a bad capacitor, and you can fix it?

Michael

Sealed CCFL...

http://www.analog-innovations.com/SED/OfficeFanCCFL.jpg

Dremel, repair components on circuit board, epoxy?

http://blog.vec.com/2011/11/01/teardown-tuesday-compact-fluorescent-part-1/

I found a socket adapter. But what I'm going to is rebuild the light
attachment on the fan to take three conventional E26/27 base, but load
it with an LED equivalent... with an open globe to allow decent air
cooling.

Well, ok, that could work too.

...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: skypeanalog | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

Michael

 

[Jim Thompson]

On Tue, 8 Mar 2016 13:07:05 -0800 (PST), mrdarrett@gmail.com wrote:

On Thursday, March 3, 2016 at 4:17:36 PM UTC-8, Jim Thompson wrote:
Anyone made their own LED lamp?

Remember this post...

http://www.analog-innovations.com/SED/OfficeFanCCFL.jpg

Well it just croaked and I bought an adapter to get a conventional
threaded socket.

(Funny, the gov't assholes... the fixture came with an 120W equivalent
CCFL... try and buy one now... you can find them, but price and
shipping is exorbitant. And the local Lowe's and Home Depot have only
lower wattages.)

So I'm pondering... how do I build a super efficient LED lamp with
~2000 lumens? (I have lots of volume, so a big inductor is easy to
fit in... I just need low dissipation.)

Suggestions? Pointers?

...Jim Thompson



Maybe it's just a bad capacitor, and you can fix it?

Michael

Sealed CCFL...

<http://www.analog-innovations.com/SED/OfficeFanCCFL.jpg>

I found a socket adapter. But what I'm going to is rebuild the light
attachment on the fan to take three conventional E26/27 base, but load
it with an LED equivalent... with an open globe to allow decent air
cooling.

...Jim Thompson
--
| James E.Thompson | mens |
| Analog Innovations | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| San Tan Valley, AZ 85142 Skype: skypeanalog | |
| Voice480)460-2350 Fax: Available upon request | Brass Rat |
| E-mail Icon at http://www.analog-innovations.com | 1962 |

I love to cook with wine. Sometimes I even put it in the food.

 

[Bret Cahill]

99 Cent Only Store seems to be able to keep the 5 W standard 27 mm base on the shelf. If you are too lazy to turn off lights they pay for themselves in ~3 months. If you are really lazy + really cheap wait 6 months and the price will drop to 2/99cents.

I haven't tried a clamp amp meter so I can't say for sure, but they must draw more than 5 watts. They certainly put out more light than their rated 40 W incandescent equivalent.

It also takes about 5 minutes to convert them to 12 mm "candelabra" base if your tools are already out on the bench.

The best part of LEDs is there is no concern about breakage in the shop or anywhere else. For about 7 weeks in the winter I use a 150 W IR heat lamp for reading as well as keeping warm. I'm always worried about waking up with blood all over the sheets from broken glass.

With LEDs it doesn't matter how much you drink!

I've got the cabbage boiling and the corned beef broiling so I'm all ready for tomorrow!


Bret Cahill

 

[Bret Cahill]

http://road.cc/content/tech-news/171836-shield-your-eyes-man-creates-90000-lumen-led-front-light-video

 

[Nobody]

On Wed, 16 Mar 2016 21:46:20 -0700, Bret Cahill wrote:

I haven't tried a clamp amp meter so I can't say for sure, but they must
draw more than 5 watts. They certainly put out more light than their
rated 40 W incandescent equivalent.

The 5 watt figure is power consumption, although I suspect that they can
get away with rounding to the nearest integer (i.e. describing a 5.499W
bulb as "5W"). That makes a lot more difference at 5W than at 40W.

Putting out more visible light on less than 1/8th of the power consumption
is entirely plausible, depending upon exactly which bulbs are being
compared.

A 40W filament lamp has a luminous efficacy of ~12 lm/W, compared to
~100 lm/W for a comparable LED lamp (bare white LEDs can reach 150 lm/W,
but you lose some power to the PSU and also need to compromise on
efficiency to pack a lot of power into a bulb-shaped package at reasonable
cost).

 

[Bret Cahill]

I haven't tried a clamp amp meter so I can't say for sure, but they must
draw more than 5 watts. They certainly put out more light than their
rated 40 W incandescent equivalent.

The 5 watt figure is power consumption, although I suspect that they can
get away with rounding to the nearest integer (i.e. describing a 5.499W
bulb as "5W"). That makes a lot more difference at 5W than at 40W.

Putting out more visible light on less than 1/8th of the power consumption
is entirely plausible, depending upon exactly which bulbs are being
compared.

A 40W filament lamp has a luminous efficacy of ~12 lm/W, compared to
~100 lm/W for a comparable LED lamp (bare white LEDs can reach 150 lm/W,
but you lose some power to the PSU and also need to compromise on
efficiency to pack a lot of power into a bulb-shaped package at reasonable
cost).

They claim 350 lumens. It seems closer to a 14 W 900 lumen CFL. Maybe they are dumping them because they are mislabeled and draw 6 - 8 W.

The "6400 K color" seems about right, like daylight.

The 16 LEDs are mounted of a circuit board behind a translucent removable plastic half dome.

At 26 gms it weighs the same as a 40 W halogen. The 14 W CFL is 56 gms, conventional incandescent 36.


Bret Cahill

 

[Michael A. Terrell]

Ralph Mowery wrote:

"Michael A. Terrell" <mike.terrell@earthlink.net> wrote in message
news:m9mdnav3Wty8QkzLnZ2dnUU7-UGdnZ2d@earthlink.com...

"Ron M." wrote:

Ye olde PL-259. How I despised those things.


They are OK, if you know how to use them. With RG8, I would tin the
braid, then use a small tubing cutter to trim it to the right length.
Then I would drill the plating out of the four holes before soldering
the shell to the braid. I never had one fail, when I used that method.
Of course, it made it difficult to reuse a connector without heating the
shell over an open flame for a few seconds so that you could pull out
the old braid.

I switched to the silver plated type and usually put in a few drops of
liquid flux to help out.

For the last several years I switched over to the crimp on types and have
not had any problems with them.

I doubt the connectors were ever designed to have much force applied to
them. If I use them at an antenna I find a way to take much of the force
off the connector.

Some A-holes like to pull the coax out of connectors, just to damage
your equipment.

 

Andy came to my office one day to shake my hand. At that time, the Presidency was shifted from Noyce to Grove. I was the project engineer on the 128k EPROM, Andy Grove put a personal touch on Intel's management practice. 3065 Bowers Avenue was the turf of the big three, and my boss told me not to care about that handshake in 1980. He was a calm and soft spoken man. Nice tan.

 

[jfeng@my-deja.com]

On Saturday, April 2, 2016 at 1:16:17 PM UTC-7, Chris wrote:

I have a pulse train generated by a 555 timer in astable mode. The period
is about 90s and the duty cycle is about 5%. This is the minimum 'on'
time I can wring out of this current config. However, I still need to
approximately halve the on time I'm getting at the moment. What's the
simplest way of doing this? (it would be good if whatever method could
also quarter the on time as well if necessary).
Can you use two 555s (or one 556)? If so, use one set at the repeitition rate to trigger the second one which determines the duration.