When we are ‘off the cord’ we will still want be able to
watch a movie, documentary or video training course. We may install a pure sine wave inverter at
some point which would convert 12VDC from the trailer batteries (two 6V golf cart
batteries connected in series) to 115VAC so that a conventional AC powered
system could be used, but we have taken the challenge to create a low power –
low voltage media center that can be used without having to be hooked up or require an inverter. The diagram
shows the planned setup.
The 19” LED TV came installed in the trailer. As delivered it uses 12VDC through a 115V wall wart 2.5A power supply. At present an external AC power hookup is required to operate this 12VDC TV. Not a smart setup. We will simply eliminate the wall wart and connect the TV directly to the 12VDC battery system so that the TV can be used ‘off cord’.
We will use a Raspberry Pi 3 as our media server running
OSMC. This will be powered by a 5VDC/2.1A
USB receptacle.
The TV mini phone plug will be used to connect to a 12VDC
mini stereo amplifier driving two small passive bookshelf speakers.
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