Active bridge rectifiers reduce heat dissipation within PoE security cameras
Ryan Huff
Abstract
Active bridge rectifiers that reduce heat dissipation within Power over Ethernet (PoE) security cameras are described.
Keywords
Power over Ethernet
security camera
LT4320
LT4275
Introduction
Power over Ethernet (PoE) has been embraced by the video surveillance industry as a solution to an age-old problem: complicated cabling. For instance, a basic, traditional fixed-view security camera requires two cables: one for power (10W to 15W from a 24V AC or 12V DC), and a separate, coax cable for the video signal. With PoE, a single Ethernet cable carries both video data and power. Everything is simplified. Right?
Not quite. To meet ...
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