"A"
"B"
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"N",
"O",
"P"
"Q",
"R",
"S",
"T",
"U",
"V",
"W",
"X",
"Y",
"Z"
Previous set of "P" definitions and terms.
POWER. The rate of doing work or the rate of expending energy. The unit of electrical power is the watt.
POWER AMPLIFIER. An amplifier in which the output-signal power is greater than the input-signal
power.
POWER-AMPLIFIER (CHAIN) TRANSMITTER. Transmitter that uses a series of power amplifiers to
create a high level of power.
POWER FACTOR. The ratio of the actual power of an alternating or pulsating current, as measured by a
wattmeter, to the apparent power, as indicated by ammeter and voltmeter readings. The power factor of
an inductor, capacitor, or insulator is an expression of their losses.
POWER LOSS. The electrical power, supplied to a circuit, that does no work and is usually dissipated
as heat. The heat loss in a conductor as current flows through it.
POWER METER. A device used to measure power. Also refer to Manufacturers of Power Meters, or Manufacturers of Optical Power Meters.
POWER PENTODE. A special purpose tube used to provide high-current gain or power amplification.
Each grid wire is directly in line with the one before and after it, a fact which allows more electrons to
reach the plate. Also refer to Vacuum Tube
POWER STANDING-WAVE RATIO (PSWR). The ratio of the square of the maximum and minimum
voltages of a transmission line.
POWER SUPPLY. A unit that supplies electrical power to another unit. It changes ac to dc and maintains
a constant voltage output within limits. [Power Supply Manufacturers]
Bench Top Power Supply
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Next section of "P" definitions and terms.
