Precision full-wave signal rectifier needs no diodes

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Rectifier circuits based on semiconductor diodes typically handle voltage levels that greatly exceed the diodes’ forward-voltage drops, which generally don’t affect the accuracy of the rectification process. However, the rectified signal’s accuracy suffers when the diode’s voltage drop exceeds the applied voltage. Precision rectifier circuits combine diodes and operational amplifiers to eliminate the effects of diode voltage drops and enable high-accuracy, small-signal rectification.

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This entry was posted on Tuesday, October 23rd, 2007 at 10:14 pm 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.