1. A signaling method used for digital transmission services, in which the signal carrying the binary value alternates between positive and negative polarities. Zero and one values are represented by the signal amplitude at either polarity, while no-value "spaces" are at zero amplitude. 2. A type of integrated circuit that uses both positively and negatively charged currents, characterized by high operational speed and cost. Also called alternate mark inversion. bipolar metal-oxide semiconductor (see BiMOS)
(1)Of or pertaining to two opposite polarities. (2) A semiconductor having at least two pn junctions and working through both minority and majority carriers (holes and electrons). Npn and pnp transistors, and related ICs such as TTL and ECL, are bipolar.
An electrotherapeutic treatment having two poles.
A device using both the positive and negative charge carriers, such as transistor.
A 2-state code where successive "1" signals alternate between positive and negative polarity.
A semiconductor device having both majority and minority carriers.
of, pertaining to, or occurring in both polar regions; "the bipolar distribution of certain species"
A signal range that includes both positive and negative values ( i.e., -10 V to +10 V).
Once known as manic-depressive disorder, bipolar disorder is a neurological brain disorder involving extremes in mood. Sometimes hyphenated as Bi-Polar.
A speaker that radiates signals front the front and back of an enclosure. Both signals are in phase to each other. Bi-polar speakers are frequently utilized to create a diffuse rear channel in a surround sound environment. Bi-polar transistors will only pass current in one direction.
type of design for integrated circuits. Bipolar integrated circuits contain bipolar transistors and other components that exploit the properties of PN junctions in semiconductors. Bipolar circuits operate at higher speeds than MOS circuits but are more complex to manufacture and consume more energy.
An input or output range that includes both positive and negative voltages (e.g., ±5V).
a semiconductor device fabrication technology that produces transistors which use both holes and electrons as charge carriers.
Type of loudspeaker with drivers mounted on opposite sides of the cabinet, or speaker enclosure. Drivers move in and out together so they remain "in-phase." Often used as rear-surround speakers. Also see: Dipolar)
Bipolar semiconductors are still one of the oldest and longest lasting technologies used to manufacture transistors and other semiconductors. Bipolar semiconductors are still very popular because of their low price and and their fast switching times.
A signal containing both positive-going and negative-going amplitude. May also contain a zero amplitude state.
1) The condition of possessing two pole sets. In a conventional (non-FET) transistor, one pole set exists between the base and collector, and the other pole set exists between the base and emitter. 2) Speakers that consist of two driver arrays facing opposite directions and wired in electrical phase with one another to create a more diffuse soundstage.
A type of semiconductor design in which electronic transmission is achieved by pulsing a line called the "base" which allows current to flow from the "emitter" to the "collector" or vice versa depending on the design. Common varieties are TTL (Transistor-Transistor-Logic) and ECL (Emitter Coupled Logic).
A processing technology for making discrete transistors and linear integrated circuits.
Transistors that are able to use both holes and electrons as charge carriers.
These ASICs may have NPN transistors, PNP transistors, or both on a single chip. Most bipolar ASICs are being replaced with CMOS or other processes. For low complexity designs, bipolar circuits have the advantage of simpler fabrication processes and can be less expensive than their CMOS counterparts.
an international system with two major powers or two groups of states having relatively equal power (52) see also: multipolar, unipolar, balance of power
The ability of a panel meter to display both positive and negative readings.
One of the two types of transistors and integrated circuits; the other is metal-oxide semiconductor (MOS). They are faster than MOS devices but more difficult to make.
A signal being measured is said to be bipolar when the voltage on its 'high' terminal can be either of positive or negative polarity in relation to its 'low' terminal.
A signal range that includes both positive and negative values (for example, -5 V to +5 V).
This is when both positive and negative poles of magnets are simultaneously used for therapy. (See Multipolar and Poles).
one of two basic processes (MOS and bipolar) used to fabricate ICs, bipolar technology is based on transistors made from a sandwich of so-called n- and p-type semiconductor material, resulting in "npn" and "pnp transistors"; bipolar technology has more fabrication steps than CMOS technology, and therefore costs more. Bipolar circuits are often chosen for high-performance analog functions while CMOS circuits are often used for digital functions as well as analog functions (see CMOS).
a semiconductor device that uses both holes and electrons for conduction simultaneously.
1) The condition of possessing two pole sets. In a conventional (non-FET) transistor, one pole set exists between the base and collector, and the other pole set exists between the base and emitter. 2) Bipolar speakers are a popular choice for surround speaker application and a THX requirement. Each speaker enclosure consists of two speaker arrays facing opposite each other and wire out of phase from one another to create a more ambient or non-directional sound field.
Having two poles. In pacing, bipolar refers to a lead with two electrodes, both of which could be located within the heart, or a pulse generator that can accommodate such a lead. See also unipolar.
A signaling method (in T1/E1 ) represents a binary «1» by alternating positive and negative pulses, and a binary «0» by absence of pulses.
A type of transistor noted for its speed where a flow of both conduction electrons and holes determine the device characteristics.
At both ends or poles. ( 17)
Electrical characteristic denoting a circuit with both negative and positive polarity. Contrast with unipolar.