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2. Standing wave ratio - Wikipedia

   en.wikipedia.org/wiki/Standing_wave_ratio

   The power standing wave ratio (PSWR) is defined as the square of the VSWR, [3] however, this deprecated term has no direct physical relation to power actually involved in transmission. SWR is usually measured using a dedicated instrument called an SWR meter.

3. SWR meter - Wikipedia

   en.wikipedia.org/wiki/SWR_meter

   An SWR meter does not measure the actual impedance of a load (the resistance and reactance), but only the mismatch ratio. To measure the actual impedance requires an antenna analyzer or other similar RF measuring device. For accurate readings, the SWR meter itself must also match the line's impedance (typically 50 or 75 Ohms).

4. Antenna analyzer - Wikipedia

   en.wikipedia.org/wiki/Antenna_analyzer

   The SWR meter requires a transmitter or signal generator to provide a few watts power test signal. An antenna bridge is able to measure at low power, but also requires a supplied test signal; depending on the bridge circuit, it can be used to measure both reactance and resistance by reading values marked on knobs that have been adjusted for a ...

5. Slotted line - Wikipedia

   en.wikipedia.org/wiki/Slotted_line

   Figure 1. Waveguide slotted line. Slotted lines are used for microwave measurements and consist of a movable probe inserted into a slot in a transmission line.They are used in conjunction with a microwave power source and usually, in keeping with their low-cost application, a low cost Schottky diode detector and VSWR meter rather than an expensive microwave power meter.

6. Orders of magnitude (power) - Wikipedia

   en.wikipedia.org/wiki/Orders_of_magnitude_(power)

   tech: approximate range of power output of 'supercars' (300 to 1000 hp) 4.5 × 10 5 W tech: approximate maximum power output of a large 18-wheeler truck engine (600 hp) 10 6: mega-(MW) 1.3 × 10 6 W tech: power output of P-51 Mustang fighter aircraft 1.9 × 10 6 W astro: power per square meter potentially received by Earth at the peak of the ...

7. Smart meter - Wikipedia

   en.wikipedia.org/wiki/Smart_meter

   The term smart meter often refers to an electricity meter, but it also may mean a device measuring natural gas, water or district heating consumption. [1] [2] More generally, a smart meter is an electronic device that records information such as consumption of electric energy, voltage levels, current, and power factor.

8. Torque converter - Wikipedia

   en.wikipedia.org/wiki/Torque_converter

   The equation expands to include the fifth power of radius; as a result, torque converter properties are very dependent on the size of the device. Mathematical formulations for the torque converter are available from several authors. [1] [2] Hrovat derived the equations of the pump, turbine, stator, and conservation of energy.

9. 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 ...