Stock market today: S&P 500 ends week lower as tariff, Fed concerns weigh By Investing.com - Jan 16, 2026 37 Investing.com -- The S&P 500 closed lower Friday, as solid quarterly earnings and healthy ...
Abstract: Power factor correction rectifiers/inverters with wide input-output voltage ranges are instrumental in applications with widely varying dc voltages such as photovoltaic inverters. Aiming at ...
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