1. Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
    Dismiss Notice

[B] how to generate a votage source whose load varies from 6kohm to 6Mohm. [/B]

Discussion in 'Electronic Projects Design/Ideas/Reviews' started by deepakddp, Feb 18, 2007.

  1. deepakddp

    deepakddp New Member

    Joined:
    Feb 2, 2007
    Messages:
    2
    Likes:
    0
    hi friends,
    can anyone pls help me with designing a ckt for a voltage source whose load varies from 6k:eek:hm: to 6M:eek:hm:
     
    Last edited: Feb 18, 2007
  2. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

    Joined:
    Jan 4, 2007
    Messages:
    21,235
    Likes:
    645
    Location:
    Ex Yorks' Hants UK
    hi,
    We need to know:

    Is it mains or battery powered?.

    Voltage Input/Output.

    Is it DC or AC.

    Current output required etc.

    What is it for ?, we maybe able to recommend a solution.

    Trouble is, we don't know the question.

    Like to help

    EricG
     
  3. j.p.bill

    j.p.bill New Member

    Joined:
    Feb 18, 2007
    Messages:
    211
    Likes:
    0
    Location:
    Missouri
    Any three-terminal regulator will supply those loads, but it would be nice to know the voltage required.
     
  4. dave

    Dave New Member

    Joined:
    Jan 12, 1997
    Messages:
    -
    Likes:
    0


     
  5. deepakddp

    deepakddp New Member

    Joined:
    Feb 2, 2007
    Messages:
    2
    Likes:
    0

    mr. EricG we want to design an ac ckt which generates a freq of 8khz with ac current at 28mV. and we want to measure the output voltage by varying the load from 6kohm to 6Mohm. we at first used a instrumentation amplifier but the variation in the output voltage was only from 6kohm to 40kohm. we dont know how to modify the ckt so that the output will vary from 6kohm to 6Mohm. it would be nice if you could help us with this problem.
     
  6. Nigel Goodwin

    Nigel Goodwin Super Moderator Most Helpful Member

    Joined:
    Nov 17, 2003
    Messages:
    39,324
    Likes:
    653
    Location:
    Derbyshire, UK
    Your question still doesn't make any sense?.
     
  7. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

    Joined:
    Jan 4, 2007
    Messages:
    21,235
    Likes:
    645
    Location:
    Ex Yorks' Hants UK
    Hi,
    I have a number of questions.

    we want to design an ac ckt which generates a freq of 8khz
    Q1. What waveform do you require, sine,square, etc.

    ac current at 28mV
    Q2. A current is measured in amps. milliamps, not millivolts.

    and we want to measure the output voltage
    Q3. The output voltage from what/where ?

    varying the load from 6kohm to 6Mohm.
    Q4. Where is the load connected?

    first used a instrumentation amplifier but the variation in the output voltage was only from 6kohm to 40kohm.
    Q5. A voltage variation is not measured in resistance units.

    we dont know how to modify the ckt so that the output will vary from 6kohm to 6Mohm.
    Q6. What output and what is varying, what circuit ?

    As you can see, as stated by Nigel, your request dosn't make any sense.

    There are many members who would like to help, but we don't understand the question.

    Quite often, a simple diagram, incuded in your written reply will help us to see what you are trying to do.

    Regards
    EricG
     
    Last edited: Feb 19, 2007
  8. Hero999

    Hero999 Banned

    Joined:
    Apr 6, 2006
    Messages:
    14,902
    Likes:
    79
    Location:
    England
    This isn't the latest incarnation of Walters?
     
  9. ericgibbs

    ericgibbs Well-Known Member Most Helpful Member

    Joined:
    Jan 4, 2007
    Messages:
    21,235
    Likes:
    645
    Location:
    Ex Yorks' Hants UK
    hi hero,

    Bring me upto speed , whats Walters ??

    Regards
    Eric
     
  10. Hero999

    Hero999 Banned

    Joined:
    Apr 6, 2006
    Messages:
    14,902
    Likes:
    79
    Location:
    England

Share This Page