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  2. PlayStation 3 technical specifications - Wikipedia

    en.wikipedia.org/wiki/PlayStation_3_technical...

    The power supply on the "fat" model is 380 W. This was reduced to 250 W in the 120 GB "Slim" model. PS3 Slim models have labels indicating localized input requirements for power (120 V 60 Hz for North American and Japanese models and 220-240 V 50 Hz for European and Australian models), however teardowns have revealed the Slim power supplies are ...

  3. Cell (processor) - Wikipedia

    en.wikipedia.org/wiki/Cell_(processor)

    Cell, a shorthand for Cell Broadband Engine Architecture, [a] is a 64-bit multi-core microprocessor and microarchitecture that combines a general-purpose PowerPC core of modest performance with streamlined coprocessing elements [2] which greatly accelerate multimedia and vector processing applications, as well as many other forms of dedicated computation.

  4. Superperfect number - Wikipedia

    en.wikipedia.org/wiki/Superperfect_number

    If n is an even superperfect number, then n must be a power of 2, 2 k, such that 2 k+1 − 1 is a Mersenne prime. [1] [2] It is not known whether there are any odd superperfect numbers. An odd superperfect number n would have to be a square number such that either n or σ(n) is divisible by at least three distinct primes. [2]

  5. List of PowerPC processors - Wikipedia

    en.wikipedia.org/wiki/List_of_PowerPC_processors

    The first letter of the model indicates the series, the second and the third model number indicates the number of cores (e.g. P5040 has four cores, T4240 has 24 cores) P series. P1 series, e500v2 cores: P1011, P1020; P2 series: e500v2 core P2020, e500mc cores P2040, P2041; P3 series, introduced in 2010, based on e500mc cores: P3041

  6. Optical power meter - Wikipedia

    en.wikipedia.org/wiki/Optical_power_meter

    An optical power meter (OPM) is a device used to measure the power in an optical signal. The term usually refers to a device for testing average power in fiber optic systems. Other general purpose light power measuring devices are usually called radiometers , photometers , laser power meters (can be photodiode sensors or thermopile laser ...

  7. Battery tester - Wikipedia

    en.wikipedia.org/wiki/Battery_tester

    Battery tester. A battery tester is an electronic device intended for testing the state of an electric battery, going from a simple device for testing the charge actually present in the cells and/or its voltage output, to a more comprehensive testing of the battery's condition, namely its capacity for accumulating charge and any possible flaws affecting the battery's performance and security.

  8. Power-to-weight ratio - Wikipedia

    en.wikipedia.org/wiki/Power-to-weight_ratio

    The useful power of an engine with shaft power output can be calculated using a dynamometer to measure torque and rotational speed, with maximum power reached when torque multiplied by rotational speed is a maximum. For jet engines the useful power is equal to the flight speed of the aircraft multiplied by the force, known as net thrust ...

  9. Battery balancing - Wikipedia

    en.wikipedia.org/wiki/Battery_balancing

    Cell balancing in a 5-cell battery, where the fifth cell has a lower capacity. Legend: A , Case where cells are unbalanced; B , Case where cells 3 and 5 and significantly discharged; C , Case where cells 2 and 5 and significantly over-charged; D , Case where battery is being charged with a passive balancer working on cells 2 and 5.