For power control, an additional degree of freedom is provided by adding an ultracapacitor bank. A control strategy is proposed to track the maximum efficiency and charge/discharge the ultracapacitor ...

This paper presents a high-voltage power amplifier for driving flexible paper speaker. Simple circuit complexity and high signal quality can be achieved. The operating principles and design ...

Met-Ed shared a statement with WGAL about the Adams County outages that have left thousands of customers without power, and provided a timeline of when power may be fully restored.

Without further ado: here are the 3 best bookshelf speakers that are self-powered, without the need for any amplification or extras. You may like Want fancy floorstanding speakers?

As of late Tuesday afternoon, more than 7,700 people were without power in Adams County.