- balanced bridge
- Condition that occurs
when a bridge circuit is
adjusted to produce a zero
output.
-
- band-pass filter
- A tuned circuit designed
to pass a band of
frequencies between a lower
cut-off frequency (f1)
and a higher cut-off
frequency (f2).
Frequencies above and below
the pass band are heavily
attenuated.
- band-stop filter
- A tuned circuit designed
to stop frequencies between
a lower cut-off frequency (f1)
and a higher cut-off
frequency (f2) of
the amplifier while passing
all other frequencies.
- bandwidth
- Width of the band of
frequencies between the half
power points.
- barrier potential
- The natural difference
of potential that exists
across a forward biased pn
junction.
- base
- The region that lies
betwen the emitter and
collector of a bipolar
junction transistor (BJT).
- base biasing
- A method of biasing a
BJT in which the bias
voltage is supplied to the
base by means of a resistor.
- battery
- A DC voltage source
containing two or more cells
that convert chemical energy
to electrical energy.
- baud
- A unit of signaling
speed equal to the number of
signal events per second.
Not necessarily the same as
bits per second.
- beta
- (b) The ratio of
collector current to base
current in a bipolar
junction transistor (BJT).
- bias
- A DC voltage applied to
a device to control its
operation.
- binary
- A number system having
only two symbols, 0 and 1. A
base 2 number system.
- bipolar junction
transistor
- (BJT), A three terminal
device in which emitter to
collector current is
controlled by base current.
- bistable
multivibrator
- A multivibrator with two
stable states. An external
signal is required to change
the output from one state to
the other. Also called a
latch.
- bleeder current
- A current drawn
continously from a souce.
Bleeder current is used to
stabilize the output voltage
of a source.
- bode plot
- A graph of gain versus
frequency.
- branch current
- The portion of total
current flowing in one path
of a parallel circuit.
- breakdown voltage
- Voltage at which the
breakdown of a dialectric or
insulator occurs.
- breakover voltage
- Minimum voltage required
to cause a diac to break
down and conduct.
- bridge rectifier
- A circuit using four
diodes to provide full wave
rectification. Converts an
AC voltage to a pulsating DC
voltage.
- buffer
- An amplifier used to
isolate a load from a
source.
- bulk resistance
- The natural resistance
of a "P" type or "N" type
semiconductor material.
- butterworth filter
- A type of active filter
characterized by a constant
gain (flat response) across
the midband of the circuit
and a 20 dB per decade
roll-off rate for each pole
contained in the circuit.
- BW
- Abbreviation for
bandwidth.
- bypass capacitor
- A capacitor used to
provide an AC ground at some
point in a circuit.
- byte
- Group of eight binary
digits or bits.
