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Design of a DC voltmeter circuit

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Maca

Nov 28, 2017
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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
 

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davenn

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Sep 5, 2009
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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


where did that circuit come from ?
why are you not using a standard voltmeter ?
 

dorke

Jun 20, 2015
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@davenn,
It looks like trying to make a "JFET VTVM" with an analog meter.,
most probably belongs to the Homework Help.
 

WHONOES

May 20, 2017
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Much easier to use an opamp. Better results too.
 

Audioguru

Sep 24, 2016
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I made that circuit 48 years ago. Its "zero" drifted all over the place when the temperature changed.
 

AnalogKid

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

ak
 

Audioguru

Sep 24, 2016
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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?
 

Ian

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Aug 23, 2006
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@Maca - is this a school/homework question?
 

davenn

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Assuming so I moved this thread before reading your post. I can always re-move it if the assumption is wrong.


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

I'm going to close the thread
 
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