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Steve_hi

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Posts posted by Steve_hi

  6. help me please about(ph meter)

    in Electronic Projects Design/Ideas

    Posted

    Hi M.
    Check with cole parmer they sell many types of probes at different prices it will be the largest expense of your project
    You can also bid on probes at Labx.com but be careful many sellers take your money but dont send the product.

    http://www.drsfostersmith.com/Product/Prod_Display.cfm?pcatid=4496&Ntt=ph%20probes&Ntk=All&Ntx=mode+matchallpartial&Np=1&N=2004&Nty=1

    Check this site for info concerning ph probes
    http://www.omega.com/techref/ph-3.html

    Here is another very good site
    http://wind.prohosting.com/prakaash/ph/ph.htm

    Please let me know how your project turns out :)

  10. PCB BUILD

    in Mechanical constructions/Hardware

    Posted

    Hi Master_Ianick

    There is also another program called stripboard magic that you might like to look at. It  can be downloaded from the internet and it too is free   :)

    Thanks to Ante
    You can download SBM from here: http://web.onetel.net.uk/~stuorguk/StripboardMagic.zip

  14. Professional Dead End?

    in General

    Posted

    As you have stated with disposable electronic products and the global economy such as it is I would think one would need to be exceptional to get ahead in the electronics field probably better just to have it as a hobby I hope I'm not being too pessimistic about this

  15. Electronic Stethoscope 2

    in Projects Q/A

    Posted

    Hi Philipf
    I made both the stethoscopes the one with the 5 741 op-amps doesnt work at all but the stehoscope2 by Audioguru works really well. I took it to class and all the students liked it. It is much easier to listen to a heart beat than with an accoustic stethoscope

  18. Are there anywhere to request free photovoltaic cell????

    in Datasheet/Parts requests

    Posted

    Very little in life is free you will have to work at getting them. A company letter head and a projected sales volume will probably get them interested in giving you some samples but your presentation will have to look professional.

    Good luck ;)

    http://www.photowatt.com
    Send Email to Photowatt International S.A.

    http://www.npowercanada.com
    Send Email to Npower Energies

    http://www.china-solarpower.com/sdp/110301/4/main-1000013.html
    Send Email to Shenzhen Xinhonghua Solar-Energy Co., Ltd (Representative:Angel)

  25. Help With Ground Please

    in Theory articles

    Posted

    Hi
    I made an ECG and when I do a continuity test for the positive battery terminal and the # 8 pins of the TL072's i have continuity, but not on the center tap of the 2  9 v batteries, and when I check for continuity of the negative terminal and the number 4 pins of the op amps ihave continuity but I also have continuity with the negatve battery and the center tap of the 2 batteries, is that supposed to be like that is ground and negative the same?

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