Glossary of Electronic Terms, Electronic terms starting from alphabet BBandwidth: the measure of a range of frequencies containing an upper and lower limit Battery: a bank of individual cells connected together to provide the required voltage Binary: the basic counting system used in computer logic. Two values are available - 0 and 1. A zero is normally represented by a 0 Volt signal, and a one by a voltage of approximately 5 Volts - these levels are dependent upon the type of logic used Binary Code: a coding scheme that communicates information by using a series of "1s" and "Os" that are represented, respectively, by the digital "ON" and "OFF" states Bit Stream: the bit rate, or flow of information, between a sender and receiver in digital communication. Also called Digital Bit Stream Bit: a unit of the binary code that consists of either a single "1" or "O." Bus: a pathway that connects devices, enabling them to communicate. May be digital or analogue, including power and earth (ground) Bypass: the practice of using (typically) low value capacitors to conduct high frequency signals either to earth or around a device with limited frequency range Byte: a unit of the binary code that consists of eight bits. One byte is required to code an alphabetic or numeric character, using an eight-bit character set code Condition that occurs when a bridge circuit is adjusted to produce a zero output. 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.
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.
The natural difference of potential that exists across a
forward biased pn junction.
The region that lies betwen the emitter and collector of a
bipolar junction transistor (BJT).
A method of biasing a BJT in which the bias voltage is
supplied to the base by means of a resistor.
A DC voltage source containing two or more cells that convert
chemical energy to electrical energy.
A unit of signaling speed equal to the number of signal events
per second. Not necessarily the same as bits per second.
(b) The ratio of collector current to base current in a
bipolar junction transistor (BJT).
A DC voltage applied to a device to control its operation.
A number system having only two symbols, 0 and 1. A base 2
number system.
(BJT), A three terminal device in which emitter to collector
current is controlled by base current.
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.
A current drawn continously from a souce. Bleeder current is
used to stabilize the output voltage of a source.
A graph of gain versus frequency.
The portion of total current flowing in one path of a parallel
circuit.
Voltage at which the breakdown of a dialectric or insulator
occurs.
Minimum voltage required to cause a diac to break down and
conduct.
A circuit using four diodes to provide full wave
rectification. Converts an AC voltage to a pulsating DC voltage.
An amplifier used to isolate a load from a source.
The natural resistance of a "P" type or "N" type semiconductor
material.
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.
Abbreviation for bandwidth.
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