Simple circuit detects dc ringing. August 17, 2000 by Jerzy Chrzaszcz, Warsaw Institute of Technology, Poland ... Figure 1a shows a typical ac-coupled ring-detection circuit. The serially connected ...

Here is a simple capacitive touch switch circuit for electronics hobbyists. ... Low power consumption and wide operating voltage are the contact key features for dc or ac application. TTP223 datasheet ...

CAPACITOR: 1. Use a sample capacitor from the Lab. 2. Measure the capacitance of the capacitor using the LRC bridge. 3. Also devise your own method (e.g., based on a step-response technique) using the ...

A simple op-amp circuit placed between ... Condit, Reston; “Transformerless Power Supplies: Resistive and Capacitive,” Application Note AN954, Microchip Technology Inc., 2004. “AC-DC ...

A feedback circuit commonly used in isolated dc-dc converter applications uses a shunt regulator (such as the ATL431) and an optical isolator to feed the output voltage back to the pulse-width ...