Search results

  1. gogo2520

    I don't know what I"m doing wrong.......about to give up....

    I think I spent a whole 8 bucks for my Iron at walmart. works fine.                                     gogo
  2. gogo2520

    I don't know what I"m doing wrong.......about to give up....

    Hello jknightandkarr Once you figure it out and do it several times you be able to do it in your sleep. Here is what I use before I bought a cheap laser printer I used to take a print off my ink-jet printer to the library and have them make a couple of copies. But the paper was not right. I...
  3. gogo2520

    Electronic suplus stores

    Hello RFamateur and welcome to the form. Here are a few. These have stuff some good lot outdated. http://www.goldmine-elec.com/default.htm http://unicornelectronics.com/prod.htm http://www.mpja.com/category/LEDs/LEDs.asp http://www.futurlec.com/index.shtml http://www.allelectronics.com/...
  4. gogo2520

    Re: made my first PCB --- but there are questions :p

    Hello you can save yourself a lot of expence by using the toner processes.    If you don't have a laser printer no sweat just take your print to a library or office supply store or just about any place that can make a laser copy of your art work. Then just use the iron method. As far as paper...
  5. gogo2520

    constant current?

    Hello plumber   And welcome to the form.     I got to ask what you are trying to power up at 4ma at 30 volts, a led draws 20ma.                                                           gogo
  6. gogo2520

    Recommendations for a good soldering staition

    Hello Rob K and welcome to the form.       I look at the replacement price for tips when I buy a soldering iron and availability. I bought the ZD 929C on this page along with ten extra tips about a year ago and haven't had a problem with  it yet...
  7. gogo2520

    Attack site

    I am running firfox right now and am not having any problems today.     but I do see a couple of spammers are trying to get on the form                               gogo
  8. gogo2520

    My latest PCB.

    Nice looking board Hero999 . You used conformal coating? I have a few ideas for my next board, Have you ever tried this stuff http://www.web-tronics.com/torefowpwh.html   I also have some small silk screen like stuff in small sheets that can be photo exposed, haven't tried that yet, think I am...
  9. gogo2520

    Single PCB Production

    Hello     Ya using sharpies dose take a little time but they work for simple boards, just have to let the lacquer set for a few hours before you etch the board. thats how I started out, now I do it the same way Hero999 dose. I like to use office gloss paper. After going to the library a few...
  10. gogo2520

    Single PCB Production

    Hello pyrohaz   To bad the sever on this site crashed a few months ago because there was a lot of threads on how to make your own PCBs. Its not really that hard and only takes a small investment. I make all my own PCB, maybe not the best compared to the commercial ones but I am getting better...
  11. gogo2520

    0-30V Stabilized Power Supply

    Heres the link for the mc34071ap http://parts.digikey.com/1/parts/462688-ic-opamp-sgl-supply-4-5mhz-8dip-mc34071ap.html                       gogo
  12. gogo2520

    optocoupler

    Hello elan_arr     And welcome to the form.     We would need some more info befor we could help. Like what are you trying to do.                                       gogo
  13. gogo2520

    Blinking Halloween Eyes?

    Hello   You can make a square wave oscillator with two npn transistors, two capacitors, four transistors, two leds, and a nine volt battery. The only other part you would need is a battery clip, and if you want to get fancy a project board. Thats an old timer project. they use to take a peace...
  14. gogo2520

    Re: 0-12 Volts LM317 PSU

    Thanks Guys     I'm not real good at building power supplies, mine are pretty simple. When I need a good large one I would use a prebuilt by someone who has the right stuff to do it with.     I think this fall I am actually going to break down and invest in a oscilloscope and study power...
  15. gogo2520

    Re: 0-12 Volts LM317 PSU

    Sorry  I don't know were the 18 volts came from the original post shows a 12 volt input. I figured he would use a 12 volt transformer  to start with and then use the regulator to lower it. And that would of been (12 - 1) x 1.5 = 16.5W ( 4 degrees x 16.5) + 30 degrees = 96, well under the max...
  16. gogo2520

    Re: 0-12 Volts LM317 PSU

    Hello     Wounder why the data sheet doesn't say that                                     gogo
  17. gogo2520

    Need help with 'TLE 4226 G' Output

    Hello  t1800   And welcome to the form.     A general purpose pnp transistor like the 2N3906 will handle 200mA's.                                         gogo 2N3906.pdf
  18. gogo2520

    Re: 0-12 Volts LM317 PSU

    hello ashishamours   The lm317 to 220 package will handle a 1.5amp. If you need more try the lm350 to-3 package that will handle 3 amps.                                                 gogo
  19. gogo2520

    DC motor controller

    Hello thavamaran   Lot of what you want to do depends on what you want the robot to do. Electric motors will run a lot of things the trick is to get them to stop when you want them to. Most robots use stepper motors or servos because they can be controlled better.     Pic microcontrollers...
  20. gogo2520

    Re: NFREN LCD MONITOR

    Hello green1706    I do not understand what the problem is. You have a LCD monitor connected to what. and what is the monitor is powered?   Is this a computer monitor with a software setting problem?                                gogo
Top