cliffclavin Posted March 4, 2005 Report Share Posted March 4, 2005 Hello!I would like to monitor the voltage from a sensor. The sensor produces 0 to 10 volts. I would like the display to show the voltage in relation to a scale of 1 to 2000.eg. 0v = 02.5v = 500 5v = 10007.5v = 150010v = 2000The digital voltmeter project can be modified to measure a voltage range of 0 to 20 volts by replacing R3 with 120 Kohm 1% res.(Voltmeter project link)http://www.electronics-lab.com/projects/test/014/index.htmlNow if I took the voltage output ( 0 to 10v ) and put a voltage doubler there to make the sensor output 0 to 20v, and connected this to the input of the modified range voltmeter ( 0v to 20v),Will the voltmeter display the range I want from the input voltage?I guess I'd have to disconnect the decimal point LED in the display ( so 12.15v would read 1215 )Will this do what I want?Many thanksps. There is a long forum discussion about making the voltmeterhttp://www.electronics-lab.com/forum/index.php?board=2;action=display;threadid=119;start=1;boardseen=1This posed a few questions that I couldn't find the answer for. However, it was a long read (10 pages) so could somebody who's built the voltmeter answer :How stable is the device? Somebody said as the voltmeter 'warms' up, the volt reading changes. Is this true? By how much? Could someone who's built this explain a bit more?Will the voltmeter (when modified to 0 to 20v range) read to 2 decimal points (eg. 12.51 v ) ?thanks Link to comment Share on other sites More sharing options...
MP Posted March 5, 2005 Report Share Posted March 5, 2005 Those who have the highest interest in that project probably have "notify" turned on which means they get an e-mail when a new post hits that area. Starting a new topic does not notify anyone in the original thread. This is why it is best to continue a topic rather than to start a new one about the same subject. You will get less replies here.Since you know where it is, I suggest you go to the original topic and re-post your question there.MP Link to comment Share on other sites More sharing options...
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