Circuit Project Electronic

Did you ever install one of those low-cost LCD panel meters in a project only to discover that it requires a floating power supply? I just did! The meter cannot share a DC ground with the voltage to be measured. The above circuit came to the rescue. It draws about 4 or 5 mA from the 9 volt supply and can supply up to 2 mA at 9 volts to the LCD meter or other load but the two capacitors isolate the grounds. Works like a champ! Also see Craig’s regulated version.

Read More Source :
http://www.techlib.com/electronics/regulators.html

Thank you 

This entry was posted on Friday, August 10th, 2007 at 1:08 am and is filed under Power supply. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.