You can combine a carefully chosen op amp, a low-threshold P-channel MOSFET, and two feedback resistors to make a rectifier circuit with less forward drop than a diode (Figure 1). The rectified output ...

This application note demonstrates how to create precision half-wave and full-wave rectifiers. To view the application note, click on the URL below. Circuit selected for www.eepn.com by Rahul Kadam.

For a long time, power meters were built using a combination of a base unit and an external power sensor connected via a cable. The RF signal was converted to a voltage signal in the power sensor, ...