REGISTERED OFFICE :

JPee Incorporation

381-C-9, Narottamwadi,

Kalbadevi Rd., Mumbai-2 (INDIA)

CALL US :

Tel.: ++91 22 2209 1639

Fax: ++91 22 2209 1639

Mo.: ++91 90 2209 1639

EMAIL US :

jpee@jpee.in

jpee.inc@gmail.com

Active components

Active components rely on a source of energy (usually from the DC circuit, which we have chosen to ignore) and usually can inject power into a circuit, though this is not part of the definition. Active components include amplifying components such as transistors, triode vacuum tubes (valves), and tunnel diodes.

 

Semiconductors

 

Diodes

 

Conduct electricity easily in one direction, among more specific behaviors.

  • Diode, Rectifier, Bridge rectifier
  • Schottky diode, hot carrier diode – super fast diode with lower forward voltage drop
  • Zener diode – Passes current in reverse direction to provide a constant voltage reference
  • Transient voltage suppression diode (TVS), Unipolar or Bipolar – used to absorb high-voltage spikes
  • Varactor, Tuning diode, Varicap, Variable capacitance diode – A diode whose AC capacitance varies according to the DC voltage applied.
  • Light-emitting diode (LED) – A diode that emits light
  • LASER diode – A semiconductor laser
  • Photodiode – Passes current in proportion to incident light
    • Avalanche photodiode Photodiode with internal gain
    • Solar Cell, photovoltaic cell, PV array or panel, produces power from light
  • DIAC (Diode for Alternating Current), Trigger Diode, SIDAC) – Often used to trigger an SCR
  • Constant-current diode
  • Peltier cooler – A semiconductor heat pump

Transistors

 

Transistors were considered the invention of the century they changed electronic circuits forever. The first transistor was a vacuum tube. A transistor is an electronic switch that, when enough power goes through it, turns on some other aspect of the circuit. Active components are used for amplification.

  • Bipolar transistors
    • Bipolar junction transistor (BJT, or simply "transistor") – NPN or PNP
      • Photo transistor – Amplified photodetector
    • Darlington transistor – NPN or PNP
      • Photo Darlington – Amplified photodetector
    • Sziklai pair (Compound transistor, complementary Darlington)
  • Field-effect transistor (FET)
    • JFET (Junction Field-Effect Transistor) – N-CHANNEL or P-CHANNEL
    • MOSFET (Metal Oxide Semiconductor FET) – N-CHANNEL or P-CHANNEL
    • MESFET (MEtal Semiconductor FET]])
    • HEMT (High electron mobility transistor)
  • Thyristors
    • Silicon-controlled rectifier (SCR) – Passes current only after triggered by a sufficient control voltage on its gate
    • TRIAC (TRIode for Alternating Current) – Bidirectional SCR
    • Unijunction transistor (UJT)
    • Programmable Unijunction transistor (PUT)
    • SIT (Static induction transistor)
    • SITh (Static induction thyristor)
  • Composite transistors
    • IGBT (Insulated-gate bipolar transistor)

Integrated circuits

  • Digital
  • Analog
    • Hall effect sensor – Senses a magnetic field.
    • Current sensor – Senses a current through it.

Optoelectronic devices

  • Optoelectronics
    • Opto-Isolator, Opto-Coupler, Photo-Coupler – Photodiode, BJT, JFET, SCR, TRIAC, Zero-crossing TRIAC, Open collector IC, CMOS IC, Solid state relay (SSR)
    • Opto switch, Opto interrupter, Optical switch, Optical interrupter, Photo switch, Photo interrupter
    • LED display – Seven-segment display, Sixteen-segment display, Dot-matrix display

Display technologies

 

Current:

  • Filament lamp (indicator lamp)
  • Vacuum fluorescent display (VFD) (preformed characters, 7 segment, starburst)
  • Cathode ray tube (CRT) (dot matrix scan (e.g. computer monitor), radial scan (e.g. radar), arbitrary scan (e.g. oscilloscope)) (monochrome & colour)
  • LCD (preformed characters, dot matrix) (passive, TFT) (monochrome, colour)
  • Neon (individual, 7 segment display)
  • LED (individual, 7 segment display, starburst display, dot matrix)
  • Flap indicator (numeric, preprinted messages)
  • Plasma display (dot matrix)

Obsolete:

  • Filament lamp 7 segment display (aka 'minitron')
  • Nixie Tube
  • Dekatron (aka glow transfer tube)
  • Magic eye tube indicator
  • Penetron (a 2 colour see-through CRT)

Vacuum tubes (valves)

 

Based on current conduction through a vacuum

  • Diode or Rectifier tube

Amplifying tubes

  • Triode
  • Tetrode
  • Pentode
  • Hexode
  • Pentagrid
  • Octode
  • Microwave tubes
    • Klystron
    • Magnetron
    • Traveling-wave tube

Optical detectors or emitters

  • Phototube or Photodiode – tube equivalent of semiconductor photodiode
  • Photomultiplier tube – Phototube with internal gain
  • Cathode ray tube (CRT) or Television picture tube
  • Vacuum fluorescent display (VFD) – Modern non-raster sort of small CRT display
  • Magic eye tube – Small CRT display used as a tuning meter (obsolete)
  • X-ray tube – Produces x-rays

Discharge devices

  • Gas discharge tube

Obsolete: 

  • Mercury arc rectifier
  • Voltage regulator tube
  • Nixie tube
  • Thyratron
  • Ignitron

Power sources

 

Sources of electrical power:

  • Battery – acid- or alkali-based power supply
  • Fuel cell – an electrochemical generator
  • Power supply – usually a mains hook-up
  • Photo voltaic device – generates electricity from light
  • Thermo electric generator – generates electricity from temperature gradients
  • Electrical generator – an electromechanical power source.

 

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About us

JPee Incorporation (formerly Mukesh Enterprise Co.), since 1998. We are the leading supplier of electronic components from almost anything to everything. We supply even small quantity and even import odd items. Just name the products and we will have it. Just call us, fax us, email us, write to us or just fill-up the Quick Contact Form for any enquiry, feedback or suggestions.

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