Search found 2157 matches

by jwax
Fri Sep 03, 2004 8:31 am
Forum: General Discussion
Topic: Repairing laptop computer power supplies
Replies: 6
Views: 3035

Re: Repairing laptop computer power supplies

Ideally, you cut out the area of the case that you need to, to get access to the leads, do your repair to the wires, and add a strain relief. Many types of strain reliefs are available.
Then, a 2-component epoxy is poured in to seal the strain relief to the housing.
John
by jwax
Sat Aug 28, 2004 10:04 am
Forum: General Discussion
Topic: Need low cost torrids
Replies: 27
Views: 8835

Re: Need low cost torrids

Why toroidal, Mike?
You're best bet is to research surplus houses, new off-the-shelf will narry be cheap! :cool:
by jwax
Tue Aug 24, 2004 9:16 am
Forum: General Discussion
Topic: show and tell time !
Replies: 13
Views: 5394

Re: show and tell time !

Truly unique, dacflyer, but hands on a clock are so much easier to read! Maybe it's from my time-telling training (a very long, long 'time' ago!), but even reading a digital clock requires some math to "know" what time it is, don't you think? 11:19 requires math to know its about 20 past 1...
by jwax
Wed Aug 18, 2004 2:58 am
Forum: General Discussion
Topic: Unidentified IC manufacturer
Replies: 1
Views: 1510

Re: Unidentified IC manufacturer

Integrated Devices Technology, Santa Clara, CA.
You're going to need a part number to identify them.
John
by jwax
Mon Aug 16, 2004 1:13 pm
Forum: General Discussion
Topic: CATs and Home Depot.
Replies: 11
Views: 5867

Re: CATs and Home Depot.

perfectbite- Turns out Home Despot wasn't making things up after all, at least according to Fluke-
"CATS Explained"- http://www.fluke.com/download/library/1263690_w.pdf<p> :D
by jwax
Sat Aug 14, 2004 4:41 am
Forum: General Discussion
Topic: CATs and Home Depot.
Replies: 11
Views: 5867

Re: CATs and Home Depot.

Good question about CAT III, though!
I'm searching for it too!
by jwax
Sat Aug 14, 2004 4:03 am
Forum: General Discussion
Topic: CATs and Home Depot.
Replies: 11
Views: 5867

Re: CATs and Home Depot.

by jwax
Thu Aug 12, 2004 2:25 pm
Forum: General Discussion
Topic: Build to order (or swap)
Replies: 24
Views: 9798

Re: Build to order (or swap)

Am I missing something? What does any of this have to do with our forum encouraging "Build to Order" of electronics projects?
Shopping carts? NASA?
:confused:
by jwax
Wed Aug 11, 2004 3:27 am
Forum: General Discussion
Topic: 11.5Vdc / 12Vdc to 12.5Vdc/13Vdc
Replies: 16
Views: 8009

Re: 11.5Vdc / 12Vdc to 12.5Vdc/13Vdc

idontknow-
Running 18 volts on a 12 volt motor may soon become a fuel pump/heater.
How about a fuel cooler to increase fuel density?
by jwax
Tue Aug 10, 2004 4:06 pm
Forum: General Discussion
Topic: Build to order (or swap)
Replies: 24
Views: 9798

Re: Build to order (or swap)

haklesup- I see your point. In many ways, the service has been and is, right here, all along. Most folks probably think of this forum, as I had thought, as just an information swap, not a hardware outlet! But, we're growing! Keep those projects coming! :D
by jwax
Tue Aug 10, 2004 1:43 pm
Forum: General Discussion
Topic: Build to order (or swap)
Replies: 24
Views: 9798

Re: Build to order (or swap)

dacflyer- laser cutter here.
What metal? How thick? What precision is needed in hole placement, and finally, are the holes in a repeatable pattern? I'll be glad to quote you! Am I correct in assuming this is a one-piece project?
John
by jwax
Mon Aug 09, 2004 8:00 pm
Forum: General Discussion
Topic: Capacitance
Replies: 19
Views: 8652

Re: Capacitance

Sounds like the motor is maxing out the capacity of that power supply, during the full load. What is it you're trying to achieve? Faster cocking? If so, you'd be better off with battery-assist than a capacitor since the energy you need is so large. Any info you can supply about the motor would help ...
by jwax
Fri Aug 06, 2004 9:09 am
Forum: General Discussion
Topic: Build to order (or swap)
Replies: 24
Views: 9798

Re: Build to order (or swap)

As you've noticed, I'm all for the idea! :D
And you're correct in seeing the market for small hardware projects that are sometimes too much or untimely for some people to build themselves!
Count me in!
John
by jwax
Thu Aug 05, 2004 5:17 pm
Forum: General Discussion
Topic: Newbie Timer Question
Replies: 6
Views: 3423

Re: Newbie Timer Question

OK, lobsterman- check out "Astable operation", about halfway through this tutorial. Complete with timer RC calculations.
http://www.uoguelph.ca/~antoon/gadgets/555/555.html
I build for fresh lobster!
:)
John
by jwax
Thu Aug 05, 2004 3:41 am
Forum: General Discussion
Topic: Heating Element Question
Replies: 9
Views: 3952

Re: Heating Element Question

Assuming you're using top-of-the-line rechargeables, how about making the pen assembly twice as long, and add two more AA's in parallel? Either that or making the battery assembly a snap-lock affair to facilitate easy swapping with a charged set. Sorry, but there's not a lot of options to put more e...