Investopedia

Operating Profit: How to Calculate, What It Tells You, and Example

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. David Kindness is a Certified Public ...
IEEE

Next-Generation Variable Capacitors to Reduce Capacitance Variable Time Using SiC MOSFETs and p-i-n Diodes in 13.56-MHz RF Plasma Systems

Abstract: This article introduces a novel method of reducing the capacitance variable time of a vacuum variable capacitor (VVC) impedance matching circuit of 320 V/1 kW/13.56 MHz common to radio ...
IEEE

Sensorless Control Strategy for IPMSM to Reduce Audible Noise by Variable Frequency Current Injection

Abstract: High-frequency (HF) signal injection is widely used in sensorless control schemes to drive interior permanent-magnet synchronous motors at low speeds, acquiring a good dynamic and a steady ...