Free circuit diagrams


Bookmark and Share
Related
Contact
email: jokam85@gmail.com
privacy policy

Voltage Monitor



Circuit diagram

Parts
D1 LED
R1 1.2k Resistor
R2 10k Var. Resistor
U1 UA741 OP AMP

Description
When the input voltage is 0 the LED glows. The LED stops glowing when the voltage rises to the level determined by R2. Reverse + and - pins to reverse operating mode. To set voltage at which LED goes off, (1) Set 0V at input. (2) Set input voltage at desired level. (3) Adjust R2 to point right after LED goes out.

author:Paul Stilo,
website: http://circuitarchive.150m.com/



Link to this page for forums and blogs:
All content on this site is provided as is and without any guarantee on any kind, implied or otherwise. We cannot be held responsible for any errors, omissions, or damages arising out of use of information available on this web site. The content in this site may contain COPYRIGHTED information and should not be reproduced in any way without prior permission from the authors. Be aware! Electricity can kill!

www.free-circuit-diagrams.com © 2008.
page generated in :0.0261