Search found 40 matches

by amuron
Tue Mar 30, 2004 12:06 pm
Forum: General Discussion
Topic: LED lightbulb?
Replies: 12
Views: 1735

Re: LED lightbulb?

I just got done meeting with a rep today. Check out these super cool LED's. 1000 lumens!!! or thousands of lumens.
http://www.laminaceramics.com/products.html<p>Certainly overkill for a reading lamp, perhaps even for a car headlight, but most interesting.<p>Ron
by amuron
Sun Mar 21, 2004 8:28 pm
Forum: General Discussion
Topic: TV Lift - Limit Switches & Controller Relays
Replies: 12
Views: 1691

Re: TV Lift - Limit Switches & Controller Relays

Rather than a micro switch, you could use a reed switch and a magnet.<p>http://www.hamlin.com/index.aspx?tabindex=3&tabid=7<p>You could also use a hall effect sensor.<p>Ron
by amuron
Wed Mar 17, 2004 9:56 am
Forum: General Discussion
Topic: Sending data on AC supply lines
Replies: 11
Views: 2032

Re: Sending data on AC supply lines

If you have lots of data http://www.intellon.com/ is a good source. Their parts are pretty easy to deal with, although the firmware has a significant learning curve. The other thing is you may be able to get some good interface ideas from their data sheets.<p>Ron
by amuron
Mon Mar 15, 2004 10:12 pm
Forum: General Discussion
Topic: help - need encapsulant?
Replies: 5
Views: 880

Re: help - need encapsulant?

Emerson and Cuming is the outfit I usually turn to for encapsulants. They have a wide range of materials, and are liberal with samples.<p>http://www.emersoncuming.com/<p>Thanks
Ron
by amuron
Mon Mar 15, 2004 1:01 am
Forum: General Discussion
Topic: solenoid valve driver
Replies: 10
Views: 1345

Re: solenoid valve driver

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Originally posted by Chris Smith: SCRs for DC and Triacs For AC, cheapest and most bullet proof way to go. All industrial systems almost exclusively use them. <hr></blockquote><p>I beg to differ on that one. Forklift c...
by amuron
Fri Mar 12, 2004 7:17 pm
Forum: General Discussion
Topic: Using transparencys for pcbs?
Replies: 9
Views: 1256

Re: Using transparencys for pcbs?

The developer is usually sodium carbonate. Its pretty inert stuff, and as long as you aren't buying a ton of it, I don't think you get hit with the hazmat fees. It might be worth trying washing soda from your grocery store, as it is a hydrated form of sodium carbonate.<p>Once you do photo, it is unl...
by amuron
Wed Mar 10, 2004 10:16 pm
Forum: General Discussion
Topic: Component sources
Replies: 11
Views: 2144

Re: Component sources

Interesting, it looks very similar to the early days of partminer. Its too bad they couldn't make it fly back in 99. (Good for you though). Now www.freetradezone.com is a whole lot more combersome to use. I think you may be onto something, but I wonder why partminer went away from the methods you pr...
by amuron
Wed Mar 10, 2004 10:10 pm
Forum: General Discussion
Topic: Las Vegas Test Specification
Replies: 5
Views: 772

Re: Las Vegas Test Specification

Actually it does not seems to be statisically based. Part of it may be the Chinese to English translation, but I'm not sure.<p>I did get a blast reading the responses though... eg how long it runs until it craps out :) <p>Ron
by amuron
Wed Mar 10, 2004 10:07 pm
Forum: General Discussion
Topic: Electronics Assembly at Home
Replies: 1
Views: 503

Re: Electronics Assembly at Home

I use 4-5 home assemblers to build my prototypes. However they bill me by the hour, as with prototypes, its pretty hard to put a firm figure on the price. There are a few outfits that do low volume production (under 1K units/year this way), but they are rare. While home assembly is cheap, its way to...
by amuron
Tue Mar 09, 2004 10:17 pm
Forum: General Discussion
Topic: Las Vegas Test Specification
Replies: 5
Views: 772

Las Vegas Test Specification

I've searched all over to find the test requirements for the Las Vegas Test spec. My Asian supplier of pager vibrator motors for one of my products calls out a Las Vegas test. I'd like to know what it is, so I can write up an appropriate qualification spec. For some reason, my supplier is unable to ...
by amuron
Tue Mar 09, 2004 10:14 pm
Forum: General Discussion
Topic: Large LED display
Replies: 3
Views: 760

Re: Large LED display

Flip disks are cool, but they do not survive a shot gun very well. Its a big problem with road signs in rural areas. I'm not sure if they have a shot gun test spec, but I do know the utility equipment suppliers do. Multiple LED signs with steel barrels do much better, as typically only a few LED's g...
by amuron
Tue Mar 09, 2004 10:11 pm
Forum: General Discussion
Topic: Using transparencys for pcbs?
Replies: 9
Views: 1256

Re: Using transparencys for pcbs?

I use great white transparencies for making the negatives. I can get reliable results at 12/12. Less than that, I create a 2X print, and then have a print shop reduce it and put the image on film.<p>Not sure what you are refering to heat wise. The UV exposure bulbs do not get more than a few degree ...
by amuron
Tue Mar 09, 2004 9:54 pm
Forum: General Discussion
Topic: help with x-10
Replies: 5
Views: 1003

Re: help with x-10

Building your own X10 interface is a real chore. The timing issues and zero crossing can be tricky, but the safety aspects are perhaps the worst. Remember you have hundreds of amps of peak current capability. A minor circuit error or part failure results in a charred mess. Been there done that. You ...
by amuron
Tue Mar 09, 2004 3:45 am
Forum: General Discussion
Topic: Qprox switches
Replies: 1
Views: 383

Qprox switches

Has anyone used these. They are sort of hidden in the digikey book. The idea is really cool, and it said one could use wood... Thats got me thinking, of what I don't know yet, but a wooden switch panel is interesting.<p>Ron
by amuron
Mon Mar 08, 2004 2:11 pm
Forum: General Discussion
Topic: Ru on circuits
Replies: 8
Views: 1003

Re: Ru on circuits

Actually thats a subset.... There is a huge book, otherwise known as the UL yellow book that has all of the code and standard numbers and their assignments... Its a must have for systems integrators, and electrical inspectors.<p>Ron