Don't ad-block us - support your favorite websites. We have safe, unobstrusive, robotics related ads that you actually want to see - see here for more.
0 Members and 1 Guest are viewing this topic.
Now, I have a voltage regulator(MC7805).I also want to try to test using a voltage regulator and a resistor.Please take a look at this drawing.http://www.flickr.com/photos/34955071@N02/3975261515/#sizes/o/So, i use the 12v to convert it to 5v and then i limit the current to get the 4v in the end.Is this OK?
Please take a look at this picture.http://www.flickr.com/photos/34955071@N02/3989165107/#sizes/o/I measured the output from the MC7805 and the multimeter shows exactly 5v. But, the meter measured 75.6mV when beam is not interrupted and measured 0.816v when the beam is interrupted which is the same as before. I probed the red circle area when I measure the voltage. Could you advise me which part should be corrected in the circuit?
Please let me ask how to post PDF file or a link.
Hi,Quote from: dsesmg on October 07, 2009, 06:59:59 PMPlease let me ask how to post PDF file or a link.Find the link you want to post.Right click and then "copy link address" (or something similar, it differs between browsers).In the post, click the "insert hyperlink" button (the globe picture).Then press Ctrl-V (with the cursor in between the "url" tags.
If you didn't get it to work with the schematic I posted, then the circuit, the sensor or the assembly is bad/dead.Measure around in the circuit and post your findings, then we can find which it is.