Circuit Project Electronic

The integrator (OP177) supplies negative feedback around the difference amplifier (AD629), forcing its output to stay at 0 V. The voltage divider on the inverting input sets the common-mode voltage of the difference amplifier to VIN/20. VOUT, the integrator output and the measurement output, sources the required current to maintain the common-mode voltage. R1 and C1 compensate the system to a bandwidth of 300 kHz.

Read more original source:
http://www.elecdesign.com/Articles/Index.cfm?AD=1&ArticleID=2643

This entry was posted on Saturday, July 5th, 2008 at 9:56 am and is filed under high voltage power supply, meter. You can follow any responses to this entry through the RSS 2.0 feed.