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Bel

A measure of voltage, current, or power gain. One bel is defined as a tenfold increase in power.

A measure of voltage, current, or power gain. One bel is defined as a tenfold increase in power. If an amplifier increases a signal's power by 10 times, its power gain is 1 bel or 10 decibels (dB). If power is increased by 100 times, the power gain is 2 bels or 20 decibels. 3 dB is considered a doubling.

Key Terms

bel
db
decibels
definition
measure voltage
power
power gain
tenfold increase power
times
usage

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Bel
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Last modified on January 26 2020
Content adapted from Wikipedia
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