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Vpp?

Joe FishbackJoe Fishback Posts: 99
edited 2004-11-29 02:52 in BASIC Stamp
I have just starting using the "Under Standing Signals" book. The book uses the abbeviation
Vpp for voltage. what kind of voltage is this? Also would be helpful if students had a list of abbeviations used in Basic Stamp student guides , does anybody have one?

Thanks,
Joe Fishback

Post Edited By Moderator (Jon Williams) : 11/29/2004 1:10:00 PM GMT

Comments

  • allanlane5allanlane5 Posts: 3,815
    edited 2004-11-26 19:59
    Basically you have +5 (regulated) and ground.

    In the PIC world, these are sometimes abbreviated Vdd and Vss. In the TTL world, there was also Vcc.

    I believe Vdd is +5, and Vss is ground.
  • Ken GraceyKen Gracey Posts: 7,407
    edited 2004-11-26 21:14
    Joe,

    In addition to Alan's notes about Vdd = 5V and Vss = gnd you will also find Vin in our Stamps in Class series. Vin is the input voltage from your power supply (9V from a transistor battery). If you received one of our kits with a power supply then it is probably also rated 9V, but may have an input of up to 12V.

    Aside from that, you shouldn't find too many strange abbreviations in our books.

    Hope this helps.

    Ken Gracey
    Parallax, Inc.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2004-11-27 00:22
    Vpp can vary in meaning depending on the context...In some cases it means Voltage, Peak Power or in terms of device programmers, it's the Programming Voltage.

    Hope that with the above information, that doesn't leave you with more questions!· wink.gif

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    Chris Savage

    Knight Designs
    324 West Main Street
    P.O. Box 97
    Montour Falls, NY 14865
    (607) 535-6777

    Business Page:·· http://www.knightdesigns.com
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  • El PaisaEl Paisa Posts: 375
    edited 2004-11-27 02:18
    Actually Vpp means Voltage peak-to peak and refers to a AC voltage, voltage between positive peak to negative peak.
    ·
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2004-11-27 22:54
    As I said, that all depends on the usage...Do a search on Google for Vpp...You will notice all the industrial and other applications in which it stands for other things.




    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Chris Savage

    Knight Designs
    324 West Main Street
    P.O. Box 97
    Montour Falls, NY 14865
    (607) 535-6777

    Business Page:·· http://www.knightdesigns.com
    Personal Page:··· http://www.lightlink.com/dream/chris
    Designs Page:··· http://www.lightlink.com/dream/designs


    Post Edited (Chris Savage) : 11/29/2004 2:12:10 AM GMT
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2004-11-29 02:52
    It occured to me that perhaps since the original poster was confused about the symbols used, perhaps I would try to re-explain my previous reply in a more understandable way...

    Often times in electronics schematics, you may encounter symbols such as you have seen, like Vdd, Vss, Vcc,·etc.· These are quite common, and probably most people who have gone through any of the Parallax information will be at least familiar with them.

    You may, however, at some point be reading someone else's Tech Docs, Schematics or Data Sheets and see things like Iled, If or Ic.· It may be useful to break these down into simpler components.

    First of all, if the Larger capital letter is V, I, R or W, these refer to the 4 main electronic·symbols as used in·Ohm's Law calculations.· V represents Voltage.· I represents Current.· R represents Resistance and W represents Watts.

    So if you see Vceo, you know that this refers to a Voltage.· The 1, 2 or 3 subscript letters following the V will indicate what the voltage refers to.· In this case, the Collector-Emmitter voltage on a transistor.· If you see Ic, this refers to Collector Current on a transistor.

    So basically the subscript letters following the main symbol are a reference.

    One more thing that might help some of the beginners...Often you will see Electrical Measurements preceeded by letters as well, such as mV, kW or uA.· These are milli-Volts, kilo-Watts and micro-Amps, respectively.· Notice that in that context the 'A' means Amps instead of an 'I'.· But nonetheless you should be familiar with these as well.· Hope this helps some people.


    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Chris Savage

    Knight Designs
    324 West Main Street
    P.O. Box 97
    Montour Falls, NY 14865
    (607) 535-6777

    Business Page:·· http://www.knightdesigns.com
    Personal Page:··· http://www.lightlink.com/dream/chris
    Designs Page:··· http://www.lightlink.com/dream/designs
    ·
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