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2. Recreational vehicle terms - Wikipedia

   en.wikipedia.org/wiki/Recreational_vehicle_terms

   Most operate on propane or AC (two-way), while some add 12 volts DC (three-way). Three-way (powered) RV refrigerators draw too much current to be powered by the house batteries, but may run on 12-volt DC power while the vehicle engine is running, a generator is running or the RV is connected to shore power. Newer models use 12 volts DC to ...

3. Voltage converter - Wikipedia

   en.wikipedia.org/wiki/Voltage_converter

   Voltage converters can be used in vehicles with 12 V DC outlets. A simple voltage dropper can be used to reduce the voltage for low-power devices; if more than 12V is required, or for high-powered devices, a switched-mode power supply is used.

4. DC-to-DC converter - Wikipedia

   en.wikipedia.org/wiki/DC-to-DC_converter

   A DC-to-DC converter is an electronic circuit or electromechanical device that converts a source of direct current (DC) from one voltage level to another. It is a type of electric power converter . Power levels range from very low (small batteries) to very high (high-voltage power transmission).

5. Electric power conversion - Wikipedia

   en.wikipedia.org/wiki/Electric_power_conversion

   A general description of DC-DC converters U.S. based 50 Hz, 60 Hz, and 400 Hz frequency converter manufacturer Archived 2020-02-21 at the Wayback Machine GlobTek, Inc. Glossary of electric power supply and power conversion terms

6. Power inverter - Wikipedia

   en.wikipedia.org/wiki/Power_inverter

   24, 36, and 48 V DC, which are common standards for home energy systems. 200 to 400 V DC, when power is from photovoltaic solar panels. 300 to 450 V DC, when power is from electric vehicle battery packs in vehicle-to-grid systems. Hundreds of thousands of volts, where the inverter is part of a high-voltage direct current power transmission system.

7. Switched-mode power supply - Wikipedia

   en.wikipedia.org/wiki/Switched-mode_power_supply

   In heavy vehicles that use a nominal 24 V DC cranking supply, 12 V for accessories may be furnished through a DC/DC switch-mode supply. This has the advantage over tapping the battery at the 12 V position (using half the cells) that the entire 12 V load is evenly divided between all cells of the 24 V battery.