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2. Emergency power system - Wikipedia

   en.wikipedia.org/wiki/Emergency_power_system

   A backup generator for a large apartment building A backup power fuel cell for telecom applications A portable emergency power generator in a shipping container. An emergency power system is an independent source of electrical power that supports important electrical systems on loss of normal power supply.

3. Power supply - Wikipedia

   en.wikipedia.org/wiki/Power_supply

   An integrated power supply is one that shares a common printed circuit board with its load. An external power supply, AC adapter or power brick, is a power supply located in the load's AC power cord that plugs into a wall outlet; a wall wart is an external supply integrated with the outlet plug itself. These are popular in consumer electronics ...

4. Load bank - Wikipedia

   en.wikipedia.org/wiki/Load_bank

   The most common type uses wire resistance, usually with fan cooling, and this type is often portable and moved from generator to generator for test purposes. Sometimes a load of this type is built into a building, but this is unusual. [4] Rarely a salt water rheostat is used. It can be readily improvised, which makes it useful in remote locations.

5. Standby generator - Wikipedia

   en.wikipedia.org/wiki/Standby_generator

   A standby generator is a back-up electrical system that operates automatically. [1] Within seconds of a utility outage an automatic transfer switch senses the power loss, commands the generator to start and then transfers the electrical load to the generator. The standby generator begins supplying power to the circuits. [2]

6. Radioisotope thermoelectric generator - Wikipedia

   en.wikipedia.org/wiki/Radioisotope...

   Diagram of an RTG used on the Cassini probe. A radioisotope thermoelectric generator (RTG, RITEG), sometimes referred to as a radioisotope power system (RPS), is a type of nuclear battery that uses an array of thermocouples to convert the heat released by the decay of a suitable radioactive material into electricity by the Seebeck effect.

7. Laptop cooler - Wikipedia

   en.wikipedia.org/wiki/Laptop_cooler

   A multi-surface cooler is a sub-type of passive cooler. It allows airflow both between the laptop base and cooler, and between the base of the cooler and the user's lap. These laptop coolers are suitable for laptops that have vents on the underside. The multi-surface cooling design typically works on any surface without blocking any vents.