All About Circuits Forum  

Go Back   All About Circuits Forum > Electronics Forums > The Projects Forum

Notices

The Projects Forum Working on an electronics project and would like some suggestions, help or critiques? If you would like to comment or assist others with their projects, this is the place to do it.

Reply   Post New Thread
 
Thread Tools Display Modes
  #1  
Old 12-22-2010, 06:20 PM
tikki tikki is offline
Junior Member
 
Join Date: Dec 2010
Posts: 13
Default Need a circuit diagram which converts millivolts to volts

Hey people,

I wanted to make an Dozzel meter. Now a days dozzel meter with ampere hour meter is easily availabl e in market.
I wanted a circuit which converts mili volts into volts.. means... my Voltage range is in between 2v to 24v. so i want a circuit which simultaneously increase or decrese my mili volts into volts.

If millivolts increases my volts should also need to increse.


If anyone have some ideas about that. please tell me. its urgent.. thank you in advance
Reply With Quote
  #2  
Old 12-22-2010, 06:44 PM
blueroomelectronics's Avatar
blueroomelectronics blueroomelectronics is offline
Senior Member
 
Join Date: Jul 2007
Location: Toronto, Canada
Posts: 1,704
Default

What market? The fish market? Why is it urgent? What's a Dozzel meter?
__________________
Bill
Reply With Quote
  #3  
Old 12-22-2010, 10:31 PM
beenthere's Avatar
beenthere beenthere is offline
Senior Member
 
Join Date: Apr 2004
Location: Missouri, USA (GMT -6)
Posts: 15,815
Blog Entries: 10
Default

That's probably a "digital" meter.

Either the meter might be rescaled, or you may need a power supply and op amp to do the scaling. What are the details about the meter?
__________________
First comes the hardware, then the software.
Reply With Quote
  #4  
Old 12-23-2010, 01:45 AM
thatoneguy's Avatar
thatoneguy thatoneguy is offline
Senior Member
 
Join Date: Feb 2009
Location: Midwest USA
Posts: 6,356
Blog Entries: 4
Default

It sounds like you need an amplifier with a 1000 voltage gain. These can be a bit sensitive to interference. Would a gain of 100 be OK?
Reply With Quote
  #5  
Old 12-23-2010, 01:04 PM
tikki tikki is offline
Junior Member
 
Join Date: Dec 2010
Posts: 13
Default

yea.. U guyz are right. that its with amplifier and Opamps.

Ok now let me tell you one more time.

I want to design a circuit which will convert Milli Volts into Voltage.
The voltage range is from 0-12V.

Now according with the Amplifier and opamp iC's LM341 and another one its correct. But I cant make it properly. I want an circuit design for it.

So please if anyone will help me, it will be greatfull

thank you
Reply With Quote
  #6  
Old 12-23-2010, 01:08 PM
Kermit2's Avatar
Kermit2 Kermit2 is offline
Senior Member
 
Join Date: Feb 2010
Posts: 2,405
Default

Can you show us the circuit you have that created so far? Have you created a schematic, or built it on a breadboard? Can you draw up your idea with a circuit prototyping software pkg?

Sketch something up in MSpaint?

Since there already seems to be a language barrier/understanding issue, pictures would be superior.
__________________
I'm too old.
Reply With Quote
  #7  
Old 12-23-2010, 05:04 PM
tikki tikki is offline
Junior Member
 
Join Date: Dec 2010
Posts: 13
Default

I am sorry sir, I dont have anything to show.

I just wanted to design a circuit which converts my mV into V. Which means with increasing of mV I want that my voltage should also increase...and vice versa while decreasing.

With the help of Amplifier and Opamp such as LM series we can build it. But As I m fresher electronics engineer I am unable to design it.
So I want someone, who will help me to give an circuit diagram of the same.
I hope you all got my questions and querry properly
Reply With Quote
  #8  
Old 12-23-2010, 05:45 PM
thatoneguy's Avatar
thatoneguy thatoneguy is offline
Senior Member
 
Join Date: Feb 2009
Location: Midwest USA
Posts: 6,356
Blog Entries: 4
Default

Do you already have a circuit that produces millivolts? Is it floating ground/isolated?
Reply With Quote
  #9  
Old 12-24-2010, 05:02 PM
tikki tikki is offline
Junior Member
 
Join Date: Dec 2010
Posts: 13
Default

Yes... I have a circuit which producing milli volts...

Only the thing is.. I want a circuit design which connects this millivolts and voltage...


so the circuit may be like..
Mili volts as input then Amplifier then Op-amp(LM342 and all) and then Output as a voltage.

So whenever i increase my millivolts.. my voltage should also increses accordingly.
Reply With Quote
  #10  
Old 12-24-2010, 05:53 PM
SgtWookie's Avatar
SgtWookie SgtWookie is offline
Expert Member
 
Join Date: Jul 2007
Location: In the vast midwest of the USA; CST
Posts: 22,031
Default

Did you mean LM324? An LM342 is a voltage regulator.

[eta]
Read here: http://www.allaboutcircuits.com/vol_3/chpt_8/5.html
__________________
General info:
If you have a question, please start a thread/topic. I do not provide gratis assistance via PM nor E-mail, as that would violate the intent of this Board, which is sharing knowledge ... and deprives you of other knowledgeable input.

Last edited by SgtWookie; 12-24-2010 at 06:11 PM.
Reply With Quote
Reply   Post New Thread

Tags
, , , , , ,


Related Site Pages
Section Title
Worksheet Opamp oscillator circuits
Worksheet AC negative feedback opamp circuits
Worksheet Precise diode circuits
Worksheet Linear computational circuitry
Worksheet Summer and subtractor opamp circuits
Worksheet Inverting and noninverting opamp voltage amplifier circuits
Worksheet Negative feedback opamp circuits
Worksheet Basic operational amplifiers
Worksheet Ammeter design
Video Lecture Basic Amplifier Configuration (Part 1) - Op Amps and Op Amp Circuits


Similar Threads
Thread Thread Starter Forum Replies Last Post
Full adder circuit diagram tag029 Homework Help 1 01-15-2010 12:39 PM
doubt in a amplifier circuit diagram whale General Electronics Chat 2 12-26-2009 01:28 PM
Is this circuit diagram accurate? Alice General Electronics Chat 0 12-05-2009 03:07 AM
state diagram for the circuit vvkannan Homework Help 4 10-10-2008 03:04 PM

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 01:07 PM.


User-posted content, unless source quoted, is licensed under a Creative Commons Public Domain License.
Powered by vBulletin
Copyright ©2000 - 2014, vBulletin Solutions, Inc.