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hotwaterwizard

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Everything posted by hotwaterwizard

  1. The problem with this design is Current handling capability. The project you are looking at is only about 5 amps and a 100 watt Amplifier needs about 20 amps. You should make sure the transformer is 20 amps or better and use about 8 of the 2N3055 transistors 4 and 4 hooking three in parallel with each original. Also see my post on the subject. http://www.electronics-lab.com/forum/index.php?board=22;action=display;threadid=222
  2. The Ic has NEC as the manufacture UPC2506v
  3. I need a data sheet on an Audio IC UPC2506V
  4. Here are some more links to check out. http://www.doctronics.co.uk/4013.htm http://www.elec.qmw.ac.uk/staffinfo/davew/lab/ttl74.htm http://www.faqs.org/docs/electric/Digital/DIGI_11.html http://www.pcbcafe.com/BOOKS/SpiceHandBook/08_chapter07-02.php http://wug.physics.uiuc.edu/courses/phys344/fall03/344exp/Lab2_TTL_Logic/Lab2_TTL_Logic.pdf http://people.msoe.edu/~welch/summer/presentation.pdf http://www.play-hookey.com/digital/decimal_counter.html
  5. How about This? http://www.turbokeu.com/myprojects/countdown3.htm
  6. Take a look at this link! http://www.redhouse.force9.co.uk/dexterspage/electr~1.htm
  7. Check out this website! http://www.qsl.net/ns8o/Induction_Generator.html
  8. Here are some Related Links. http://www.esf.edu/pse/keller/Articles/RSI98_EBeam.pdf http://wwwrsphysse.anu.edu.au/ampl/research/am/hollowfibres/fibre.html http://www.weizmann.ac.il/home/detlab/preprints/DIA1JAP.pdf http://ajpheart.physiology.org/cgi/content/full/275/2/H542
  9. Try this! http://ourworld.compuserve.com/homepages/Bill_Bowden/555.htm#555leds.gif
  10. Sequential Flasher Here is a simple circuit for sequentially flashing Christmas light strings or other similar low-power lamps. The socket symbols may be single bulbs or sockets for lamp strings. The load must be capable of operating from DC since the SCRs rectify the line voltage. The SCRs must be sensitive-gate types and must be able to handle the load current and line voltage. The 1uF capacitors are non-polar film types. A fuse is indicated and a GFI type of outlet is recommended. Warning: This circuit should be constructed only by persons with the qualifications to work on and design high voltage circuitry. Necessary safety considerations are not indicated. All parts of the circuit should be considered "hot". The circuit may be extended by repeating the pattern with the last neon lamp connecting back to the first through a capacitor. Although a quick breadboard was tested, this circuit is "experimental" and may require some tweaking for best performance. The flashing speed may be controlled by connecting a 100k ohm (or larger) potentiometer across the 10 uF capacitor and connecting the 1 meg resistors to the wiper. Make sure that the shaft is an insulated type. The 1 meg resistors may be lowered in value for faster flashing.
  11. Here is a PDF of a temperature controller data sheet. http://www.ee.washington.edu/stores/DataSheets/linear/lm3911.pdf
  12. I have a circuit that may help but I don't know if it can be posted. I got it out of the Encyclopedia of Electronic Circuits Volume 3 page 626.
  13. This is so cool how did you get the diagram to show it in operation with the timing in progress and working?
  14. If you want to share your projects I'm sure we all could enjoy them if you post them on this page.
  15. Try this link! http://www.zen22142.zen.co.uk/Circuits/Timing/asym.htm
  16. Search option is a great tool. However yours lacks something very important. The option to view the original post in it's original section and the replys to that post.
  17. This link is Forbibben to non members. Is there a way to get the info without registering?
  18. hotwaterwizard

    RS422

    Try this page? http://para.maxim-ic.com/compare.asp?Fam=RS485&Tree=Interface&HP=Interface.cfm&ln=
  19. American Wire Gauge AWG OHMS PER WIRE SIZE 1000 FT. DIAMETER 1 .1264 .2893 2 .1593 .2576 3 .2009 .2294 4 .2533 .2043 5 .3195 .1819 6 .4028 .1620 7 .5080 .1443 8 .6405 .1285 9 .8077 .1144 10 1.018 .1019 11 1.284 .0907 12 1.619 .0808 13 2.042 .0720 14 2.524 .0641 15 3.181 .0571 16 4.018 .0508 17 5.054 .0453 18 6.386 .0403 19 8.046 .0359 20 10.13 .0320 21 12.77 .0285 22 16.20 .0253 23 20.30 .0226 24 25.67 .0201 25 32.37 .0179 26 41.02 .0159 27 51.44 .0142 28 65.31 .0126 29 81.21 .0113 30 103.7 .0100 31 130.9 .0089 32 162.0 .0080 33 205.7 .0071 34 261.3 .0063 35 330.7 .0056 36 414.8 .0050 37 512.1 .0045 38 648.2 .0040 39 846.6 .0035 40 1079. .0031 41 1323. .0028 42 1659. .0025 43 2143. .0022 44 2593. .0020 45 3348. .00176 46 4207. .00157 47 5291. .00140
  20. They say you can open these Schematics with Protel 2.5 http://members.tripod.com/valveaudio/schematics.htm Can any one figure out how?
  21. Try This Link http://electronicsworld.tripod.com/remotecontrolsimages/remotecontrolsckt5.html
  22. This is a Solid State Relay because it switches a larger load on and off without the use of metal contacts on the output. What does Solid State mean in your mind? Solid State in my mind means not mechanical
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