Search found 17 matches

by danbob
Tue Dec 28, 2010 4:50 pm
Forum: Computer Programming
Topic: atx power supply problem
Replies: 1
Views: 925

atx power supply problem

I make bench power supplies out of atx power supplies for my friends. Basically you ground the green wire and put 1 to 2 amp fixed load on the 5 volt side and you end up with a nice 12-volt supply for your work bench. I have recently run in to a couple atx supplies that wont work like this. They sta...
by danbob
Fri Feb 05, 2010 3:13 pm
Forum: Computer Programming
Topic: laptop wireless adapter
Replies: 1
Views: 822

laptop wireless adapter

I have a compac 1700 with xp. I got a belkin pre-n adapter and installed the software. I went to the library and it worked fine. then about a year later I installed a cisco wireless system in my house and used a linsky usb receiver on the wife's computer and all was good. I then tried to use my belk...
by danbob
Thu Apr 16, 2009 4:55 pm
Forum: Computer Programming
Topic: adobe 9
Replies: 4
Views: 1198

Re: adobe 9

I tryed the document on a old laptop I had with adobe 6 and snap shot worked perfectly. I guess adobe 9 will not allow you to use snap shot on some older documents. On this document the snap shot icon does not even high lite on the tool bar.
danbob
by danbob
Tue Apr 14, 2009 6:43 pm
Forum: Computer Programming
Topic: adobe 9
Replies: 4
Views: 1198

adobe 9

with my old adobe I could out line a section of a schematic and then right click to get options one of these was to print the selected section of the page. I have up graded to adobe reader 9 and can no longer do this. is there any way to print a section of a page in adobe 9? Dan
by danbob
Wed Mar 18, 2009 9:23 am
Forum: Computer Programming
Topic: Ace laptop sound card
Replies: 2
Views: 805

Ace laptop sound card

I am thinking of getting a acer as4730-4516 laptop and I need to know if the sound card has stereo input for SDR (software defined radio). I cant talk to anyone at acer unless I have a acer computer. Does anyone know if this model has stereo input.
Dan
by danbob
Wed Oct 08, 2008 8:51 am
Forum: General Discussion
Topic: stripping insulation from magnet wire
Replies: 6
Views: 1277

stripping insulation from magnet wire

I am making some 3/8" od torrid baluns and inductors. I would like to know if any one has a trick way to remove the insulation from the magnet wire? I am using sand paper now but it is a pain in the posterior and the point were the insulation ends is not to even. Dan
by danbob
Tue Jun 17, 2008 6:57 pm
Forum: General Discussion
Topic: current sensing
Replies: 3
Views: 1227

current sensing

I am building a screwdriver antenna. I have the motor and built a simple 555 PWM supply for it. I want to be able to sense the current increase at the end of the travel at both ends to turn off the motor. I have a bunch of 5 watt .1 ohm resistors and was going to use one to sense the current but aft...
by danbob
Sun Dec 09, 2007 5:12 pm
Forum: General Discussion
Topic: lm386 problem
Replies: 4
Views: 1428

lm386

this is the circuit that I am using. I changed the signal from sine wave to square wave and it got rid of the click ( the keyer buts out a square wave). also I found that I had to bypass the +voltage to ground or the lm386 went in to oscillation. I tried removing the resistor and cap between ground ...
by danbob
Sat Dec 08, 2007 7:01 pm
Forum: General Discussion
Topic: lm386 problem
Replies: 4
Views: 1428

lm386 problem

I am building a basic lm386 amp for side tone for a keyer I just built. When I key the paddle (I am using my function generator at 700hz for testing the amp) there is a loud click in the speaker like it is getting a surge of voltage and then the tone comes through and sound good. Any ideas on how to...
by danbob
Fri Apr 06, 2007 11:29 pm
Forum: General Discussion
Topic: antenna ??????????????
Replies: 4
Views: 1197

antenna ??????????????

what is this antenna for?
Image
by danbob
Wed Feb 28, 2007 7:47 pm
Forum: General Discussion
Topic: Does anyone know if I can get ELECTRONICS IUSTILLATED
Replies: 5
Views: 1448

most libraries subscribe to places that have these magazines in PDF files. go talk to your librarian and they will help you.
by danbob
Mon Feb 19, 2007 7:22 pm
Forum: General Discussion
Topic: Start to Blacklist Ad Sites Here?
Replies: 16
Views: 4165

spammers

we should change the terms of use agreement to allow the spammers but they would have to pay $5,000 a day to post. the bots would not see this and go ahead and post. we could let them stay for 3 or 4 days and then send them a bill. each state could have one of the registered users as a collection ag...
by danbob
Tue Jan 30, 2007 7:26 pm
Forum: General Discussion
Topic: dealing with small drill bits/holes
Replies: 15
Views: 5555

I got a nice 50 piece set of carbide drills (5 or 6 sizes) from Dan's Small Parts for $10.00 http://www.danssmallpartsandkits.net/
by danbob
Mon Jan 29, 2007 6:57 pm
Forum: General Discussion
Topic: Hmmm, batteries are obsolete?
Replies: 14
Views: 3848

only half of the equation

If they can get this to work were are they going to get the electricity to charge all of these batteries and caps?
by danbob
Fri Jan 19, 2007 4:46 pm
Forum: General Discussion
Topic: free dc motors
Replies: 0
Views: 1568

free dc motors

Tread mills have motors and controllers and there are usually at least 1 a month on craigslist for free. The only problem with them is that the controller is set up so you have to turn the speed control to 0 for it to start and there is a 1.5 second delay before the motor starts. I fixed having to 0...