In Comparing Op-Amp & Video Amp Topologies, Part 1, we mentioned that in a video amplifier, such as seen in Figure 1, a DC servo circuit is generally required to ensure that the average voltage in a ...

In my previous blog in this series, we looked at the video amplifier used in a piece of professional video equipment, the Sony BE-3000 video switcher/effects board. Figure 1 shows a video amplifier ...