diode
Sign in to savethumb|Various semiconductor diodes. Left: A four-diode bridge rectifier. Next to it is a [[1N4148 signal diode. On the far right is a Zener diode. In most diodes, a white or black painted band identifies the cathode into which electrons will flow when the diode is conducting. Electron flow is the reverse of conventional current flow.]]
AI overview
A diode is an electronic component made from semiconductor material that allows electric current to flow in one direction while blocking it in the other. Diodes are used in many applications, such as converting alternating current to direct current in power supplies and protecting circuits from damage caused by reversed current flow.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- Electronic component.name
- Thermionic diode
- Electronic component.image
- 2-50A 2 (2).JPG
- Electronic component.caption
- A high power vacuum tube diode used in radio equipment as a rectifier
- Electronic component.type
- Active
- Electronic component.inventor
- John Ambrose Fleming
- Electronic component.invention_Year
- 1904
- Electronic component.pins
- Plate and cathode
- Electronic component.symbol
- 100px
- Electronic component.image_size
- 225px
- Electronic component.working_principle
- Thermionic emission
- Electronic component.symbol_caption
- The symbol for an indirectly heated vacuum tube diode. From top to bottom, the element names are: plate, cathode, and heater.
via Wikipedia infobox
Article
45 sectionsContents
- Main functions
- Unidirectional current flow
- Threshold voltage
- Reverse breakdown
- Other functions
- History
- Thermionic
- Semiconductor
- Etymology
- Vacuum tube diodes
- Point-contact diodes
- Junction diodes
- p–n junction diode
- Schottky diode
- Current–voltage characteristic
- Reverse bias
- Forward bias
- Operating regions
- Shockley diode equation
- Small-signal behavior
- Reverse-recovery effect
- Types of semiconductor diode
- Graphic symbols
- Numbering and coding schemes
- EIA/JEDEC
- JIS
- Pro Electron
- Related devices
- Applications
- Radio demodulation
- Power conversion
- Reverse-voltage protection
- Over-voltage protection
- Logic gates
- Ionizing radiation detectors
- Temperature measurements
- Current steering
- Waveform clipper
- Clamper
- Computing exponentials and logarithms
- Abbreviations
- See also
- References
- Further reading
- External links
thumb|Various semiconductor diodes. Left: A four-diode bridge rectifier. Next to it is a [[1N4148 signal diode. On the far right is a Zener diode. In most diodes, a white or black painted band identifies the cathode into which electrons will flow when the diode is conducting. Electron flow is the reverse of conventional current flow.]]
A diode is a two-terminal electronic component that conducts electric current primarily in one direction (asymmetric conductance). It has low (ideally zero) resistance in one direction and high (ideally infinite) resistance in the other.