All About Circuits Forum Need a circuit diagram which converts millivolts to volts
 Register Blogs FAQ Members List Today's Posts Search Today's Posts Mark Forums Read

 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.

#1
12-22-2010, 06:20 PM
 tikki Junior Member Join Date: Dec 2010 Posts: 13
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.

#2
12-22-2010, 06:44 PM
 blueroomelectronics Senior Member Join Date: Jul 2007 Location: Toronto, Canada Posts: 1,704

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

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.
#4
12-23-2010, 01:45 AM
 thatoneguy Senior Member Join Date: Feb 2009 Location: Midwest USA Posts: 6,356 Blog Entries: 4

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?
__________________
$\small{\fra{1}{\fra{1}{R_1}+\fra{1}{R_2}+{\dots}+{ \fra{1}{R_N}}}$ Nifty? -Click Here to see how to make your formulas Look GOOD!
Also-Impedance Graph paper.
#5
12-23-2010, 01:04 PM
 tikki Junior Member Join Date: Dec 2010 Posts: 13

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
#6
12-23-2010, 01:08 PM
 Kermit2 Senior Member Join Date: Feb 2010 Posts: 2,405

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.
#7
12-23-2010, 05:04 PM
 tikki Junior Member Join Date: Dec 2010 Posts: 13

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
#8
12-23-2010, 05:45 PM
 thatoneguy Senior Member Join Date: Feb 2009 Location: Midwest USA Posts: 6,356 Blog Entries: 4

Do you already have a circuit that produces millivolts? Is it floating ground/isolated?
__________________
$\small{\fra{1}{\fra{1}{R_1}+\fra{1}{R_2}+{\dots}+{ \fra{1}{R_N}}}$ Nifty? -Click Here to see how to make your formulas Look GOOD!
Also-Impedance Graph paper.
#9
12-24-2010, 05:02 PM
 tikki Junior Member Join Date: Dec 2010 Posts: 13

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.
#10
12-24-2010, 05:53 PM
 SgtWookie Expert Member Join Date: Jul 2007 Location: In the vast midwest of the USA; CST Posts: 22,031

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

[eta]
__________________
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.

 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 tag029 Homework Help 1 01-15-2010 12:39 PM whale General Electronics Chat 2 12-26-2009 01:28 PM Alice General Electronics Chat 0 12-05-2009 03:07 AM vvkannan Homework Help 4 10-10-2008 03:04 PM

 Thread Tools Display Modes Linear Mode

 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 Rules
 Forum Jump User Control Panel Private Messages Subscriptions Who's Online Search Forums Forums Home Electronics Forums     General Electronics Chat     The Projects Forum     Homework Help     Electronics Resources Software, Microcomputing, and Communications Forums     Programmer's Corner     Embedded Systems and Microcontrollers     Computing and Networks     Radio and Communications Circuits and Projects     The Completed Projects Collection Abstract Forums     Math     Physics     General Science All About Circuits Commmunity Forums     Off-Topic     The Flea Market     Feedback and Suggestions

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