Search found 385 matches

by Dave Dixon
Thu Dec 02, 2004 6:29 am
Forum: General Discussion
Topic: red leds
Replies: 20
Views: 3367

Re: red leds

Digi-Key, Mouser, Newark-In-One, Chicago Miniature, Ledtronics, Allied Electronics to name a few. Can you be a little more specific? Surface mount? Through hole? Diffused or Clear, Round or Rectangular? Quantity required? Good luck, Dave BTW 700nm seems more common.. Is that close enough???<p>[ Dece...
by Dave Dixon
Thu Dec 02, 2004 5:03 am
Forum: General Discussion
Topic: SO8
Replies: 16
Views: 3533

Re: SO8

Hi all, To remove SMD's with lots of legs, I found some stuff called Chip-Quick from Emulation Technologies. I think it may be available from DigiKey. It's an alloy with a super low melting point. Just a little dab will mix with the existing solder, and the joints stay liquid for quite some time. Ju...
by Dave Dixon
Fri Nov 19, 2004 12:22 pm
Forum: General Discussion
Topic: PCB Layout Software???
Replies: 18
Views: 3867

Re: PCB Layout Software???

Hi Bob, I use the pay version of Eagle, but a quick check on their website shows that the freeware maximum board size is 4 X 3.2 inches and 2 SIGNAL layers max (Top and Bottom). You can have solder masks, silkscreens etc. for top and bottom, but they don't support multilayer boards. Freeware, with a...
by Dave Dixon
Fri Nov 19, 2004 12:00 pm
Forum: General Discussion
Topic: grounding straps
Replies: 7
Views: 1550

Re: grounding straps

David, I understand your point about potential, and your reasoning that if the item is on the static mat that no electrostatic discharge will occur between yourself and the item, if you are connected to the mat (through said resistance). I'm not comfortable with having a static station at an unknown...
by Dave Dixon
Fri Nov 19, 2004 5:03 am
Forum: General Discussion
Topic: grounding straps
Replies: 7
Views: 1550

Re: grounding straps

James, If you are setting up a shack/shop, I would suggest sinking a copper rod into actual earth ground. We go 8 feet here at work, but 3-4 feet should suffice. Then we run #6 GA unshielded copper wire from it to a location under our benches where it can be "clipped" onto for our anti-static statio...
by Dave Dixon
Tue Nov 16, 2004 12:01 pm
Forum: General Discussion
Topic: A/V Switcher Project
Replies: 3
Views: 1762

Re: A/V Switcher Project

Dave, What specific Maxim part(s) are you looking for? I agree with Chris, Maxim is pretty
good about giving out samples. I have a box of various MAX parts. If it's in my "spare parts" box... consider it yours.
Good luck,
Dave
by Dave Dixon
Mon Oct 25, 2004 10:47 am
Forum: General Discussion
Topic: Wireless Controler
Replies: 3
Views: 717

Re: Wireless Controler

Here's a simple idea. How about arranging it
so that the handle has to be screwed on tight
to complete the circuit. Just like some flashlights
operate. Low tech, but cheap and easy!
Have fun - "or else"!!!
Dave
Or do YOU want the remote to drive her nuts by turning it on/off???
by Dave Dixon
Fri Oct 22, 2004 1:01 pm
Forum: General Discussion
Topic: Cheap type of solder mask
Replies: 4
Views: 1341

Re: Cheap type of solder mask

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr> Minimum buy on this is 24 bottles <hr></blockquote><p>Whoops,,, I was in too big of a hurry. I went to the terms and conditions ordering info, and saw no min. I didn't look at the specific item! Sorry 'bout that! 73's...
by Dave Dixon
Fri Oct 22, 2004 9:26 am
Forum: General Discussion
Topic: Cheap type of solder mask
Replies: 4
Views: 1341

Re: Cheap type of solder mask

Mouser carries some for as low as $2.95.
Mouser solder mask page
No minimum order, and same day shipping.
Unless you really want to make your own......
Best regards,
Dave
by Dave Dixon
Thu Oct 14, 2004 6:00 am
Forum: General Discussion
Topic: 270 degree sweep panel meter source
Replies: 5
Views: 961

Re: 270 degree sweep panel meter source

Here is a place that has 250 degree meter movements....
web page for Hoyt
Good luck,
Dave
by Dave Dixon
Tue Oct 12, 2004 5:03 am
Forum: General Discussion
Topic: energy efficiency
Replies: 4
Views: 788

Re: energy efficiency

Hi Dean,
I've seen the heating element on an electric stove glow (produce
light). Does that drop the percentage just a hair? Sorry... I just couldn't resist!!
Dave<p>[ October 12, 2004: Message edited by: Dave Dixon ]</p>
by Dave Dixon
Mon Sep 27, 2004 5:05 am
Forum: General Discussion
Topic: stupid question
Replies: 10
Views: 1655

Re: stupid question

My regular source for all kinds of headers
is Samtec. Free samples "next day" even!
Dave
by Dave Dixon
Thu Sep 16, 2004 6:53 am
Forum: General Discussion
Topic: LED's
Replies: 5
Views: 973

Re: LED's

Will,
Here's a site that has some info on various
voltage/wattage LED Traffic Signal Lights.
I hope this helps.
Ledtronics Traffic Signal Lights (LED)
Dave
by Dave Dixon
Wed Sep 15, 2004 9:52 am
Forum: General Discussion
Topic: transistor pinout
Replies: 12
Views: 1611

Re: transistor pinout

Whew? My old 1985 RCA/SK book doesn't show any packages like that. If you have them, can you ohm them out?
I'll dig a little deeper thru the archives if needed.
Dave
by Dave Dixon
Wed Sep 15, 2004 6:35 am
Forum: General Discussion
Topic: transistor pinout
Replies: 12
Views: 1611

Re: transistor pinout

NTE datasheet
Or maybe this one???
Good luck,
Dave