I'm considering using a TS351 video transmitter (6.5-12V) and a 700TVL camera (8-13V) on an RC aircraft where a 3S LiPo battery (11.1V) is used as the main power source. The rest of the electronics on board use a 5V source that I tap off of a brushless motor's ESC (via the included 2A BEC). What is the best way to power the transmitter and camera? Is it safe to tap a line directly off the battery for each or do I need regulators of some sort? I'm thinking one common regulator to both would be best.
A fully charge 3S LiPo outputs about 12.6V.
The vehicle currently has 4 20A ESCs for 4 brushless motors and the flight control electronics run off 5V. Currently I am running the flight controller and RC receiver from the 5V tap from the ESCs, but I probably need to separate the two power busses, or do I?