emitter

Thân thiện

The technician tests the transistor's emitter with a multimeter.

Definition

1. Noun:
   • The electrode in a transistor where electrons originate: In electronics, the "emitter" is one of the three terminals (emitter, base, collector) in a bipolar junction transistor (BJT). It is the region from which charge carriers (electrons or holes) are injected into the base region.
   • A source that emits something: More generally, an "emitter" can refer to any object or device that sends out or gives off something, such as light, sound, particles, or signals.

Examples of Usage

• Noun (Electronics):
  • In an NPN transistor, the emitter emits electrons into the base.
  • The circuit design requires connecting the emitter to ground.
• Noun (General Source):
  • The infrared emitter on the remote control sends signals to the television.
  • The factory was identified as a major pollutant emitter.

Advanced Usage

• "Emitter-coupled logic (ECL)": A high-speed integrated circuit technology where the primary switching components are configured as a differential amplifier with emitters coupled together.
  • Emitter-coupled logic is known for its very fast operation but high power consumption.
• "Emitter follower": A common collector amplifier configuration where the output voltage follows the input voltage, providing high current gain.
  • The emitter follower circuit is often used as a buffer stage.

Variants and Related Words

• Emit (verb): To send out or give off (light, sound, a smell, etc.).
  • The device emits a high-pitched sound.
• Emission (noun): The act of emitting or something that is emitted.
  • The new regulations aim to reduce carbon emissions.

Synonyms

• Source: A place, person, or thing from which something originates.
• Origin: The point or place where something begins.
• Transmitter: A device that sends out signals (specific to signals/waves).

Related Phrases/Phrasal Verbs

(Note: "Emitter" is primarily a noun and does not have standard phrasal verbs. Related action is described with the verb "emit.") - "To emit from": To be sent out from a source. - Light emitted from the star takes years to reach us.

Related Idioms

(Note: There are no common idioms specifically using the word "emitter.")

Học thuật

Noun

1. the electrode in a transistor where electrons originate