What is a characteristic feature of CCDs in comparison to video tube camera systems?

A characteristic feature of charge-coupled devices (CCDs) is their ability to operate at lower voltages compared to video tube camera systems. This lower operating voltage is advantageous as it allows for more efficient energy consumption and reduces the overall heat generation during operation. CCDs utilize a technology that converts light into electrical charge with high efficiency, which contributes to their effectiveness in capturing high-quality images while requiring less energy. This feature also plays a significant role in the miniaturization of devices, allowing for compact designs in various applications, including medical imaging and consumer electronics.

In contrast, video tube camera systems typically need higher operating voltages to generate and manipulate electron beams inside the tube, which contributes to greater power consumption and potential issues like higher heat output. The other options, such as increased lag in image capture and larger physical size, tend to pertain more to older technologies rather than the efficiencies that CCDs offer. Therefore, the distinction of lower operating voltages establishes a significant advantage of CCD technology in comparison to traditional video tube systems.