Connect with us

Design of a DC voltmeter circuit

Reply to Thread

Discussion in 'Electronics Homework Help' started by Maca, Nov 28, 2017.

Thread Status:
Not open for further replies.
Scroll to continue with content
  1. Nov 28, 2017 #1
    Maca

    Maca

    1
    0
    Nov 28, 2017
    I need to design the circuit of a voltmeter that measures DC voltage from 0 to 10 v, Someone could help me since I do not know what capacity to use the resistors and capacitor

    Thank you
     

    Attached Files:

  2. Nov 28, 2017 #2
    davenn

    davenn Moderator

    13,715
    1,911
    Sep 5, 2009

    where did that circuit come from ?
    why are you not using a standard voltmeter ?
     
  3. Nov 28, 2017 #3
    dorke

    dorke

    2,342
    665
    Jun 20, 2015
    @davenn,
    It looks like trying to make a "JFET VTVM" with an analog meter.,
    most probably belongs to the Homework Help.
     
  4. Dec 1, 2017 #4
    WHONOES

    WHONOES

    1,004
    271
    May 20, 2017
    Much easier to use an opamp. Better results too.
     
  5. Dec 1, 2017 #5
    Audioguru

    Audioguru

    3,041
    678
    Sep 24, 2016
    I made that circuit 48 years ago. Its "zero" drifted all over the place when the temperature changed.
     
  6. Dec 2, 2017 #6
    AnalogKid

    AnalogKid

    2,425
    690
    Jun 10, 2015
    You can reduce the zero drift by 50% or more with a couple of diodes.

    ak
     
  7. Dec 2, 2017 #7
    Audioguru

    Audioguru

    3,041
    678
    Sep 24, 2016
    Does the teacher expect the student to ask on an online forum how to design a 48 years old circuit without giving any instructions about how it works?
     
  8. Dec 2, 2017 #8
    Ian

    Ian Administrator

    1,487
    435
    Aug 23, 2006
    @Maca - is this a school/homework question?
     
  9. Dec 2, 2017 #9
    Harald Kapp

    Harald Kapp Moderator Moderator

    10,793
    2,435
    Nov 17, 2011
    @Ian: Assuming so I moved this thread before reading your post. I can always re-move it if the assumption is wrong.
     
    Ian likes this.
  10. Dec 2, 2017 #10
    davenn

    davenn Moderator

    13,715
    1,911
    Sep 5, 2009

    also after 6 days he hasn't bothered to come back and answer the asked Q's

    I'm going to close the thread
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Similar Threads
There are no similar threads yet.
Loading...
Thread Status:
Not open for further replies.
Electronics Point Logo
Continue to site
Quote of the day

“”

-