Electronic Components

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Electronic Components

  1. 1. Electronic Component, Uses and Symbol
  2. 2. Resistor <ul><li>A resistor is a passive component that limits the electrical current flowing in a circuit. </li></ul>
  3. 3. Variable Resistor <ul><li>Variable resistors consist of a resistance track with connections at both ends and a wiper which moves along the track as you turn the spindle </li></ul>
  4. 4. Diode <ul><li>A diode is a two-terminal electronic component that conducts electric current in only one direction. </li></ul>
  5. 5. Light-Emitting Diode (LED) <ul><li>A Light emitting diode is simply a diode that lights up when current flows through one direction. </li></ul>
  6. 6. Transistor <ul><li>Transistors are commonly used as electronic switches, for both high power applications including switched-mode power supplies and low power applications such as logic gates. </li></ul>
  7. 7. Capacitor <ul><li>A capacitor is a passive electronic component that stores energy in the form of an electrostatic field. The capacitance is directly proportional to the surface areas of the plates, and is inversely proportional to the separation between the plates. Capacitance also depends on the dielectric constant of the substance separating the plates </li></ul>
  8. 8. Thyristor <ul><li>The thyristor act as bistable switches, conducting when their gate receives a current pulse, and continue to conduct for as long as they are forward biased (that is, as long as the voltage across the device has not reversed). </li></ul>
  9. 9. Speaker <ul><li>A speaker is an electroacoustic transducer that converts an electrical signal into sound. The speaker moves in accordance with the variations of an electrical signal and causes sound waves to propagate through a medium such as air or water. </li></ul>
  10. 10. Buzzer <ul><li>Buzzers make a loud noise when connected to a battery. They are often used as warning devices. </li></ul>
  11. 11. Switches <ul><li>A diode is a two-terminal electronic component that conducts electric current in only one direction. </li></ul>Click here for more description of switches
  12. 12. Thermistor <ul><li>A diode is a two-terminal electronic component that conducts electric current in only one direction. </li></ul>
  13. 13. Filament Bulb <ul><li>Filament Bulb emit light when an electric current passes through them. They have a thin wire filament which becomes very hot and glows brightly when a current passes through it. The filament is made from a metal with a high melting point such as tungsten and it is usually wound into a small coil. </li></ul>
  14. 14. Motor <ul><li>Motors are often used to turn wheels, gears, cams or pulleys. Motors have two terminals that connect to a battery. The direction of the turning depends on the way the battery wires are connected to the terminals. </li></ul>
  15. 15. Stepper motors <ul><li>Stepper motors are very precise motors that can be made to turn through an exact number of steps. </li></ul>
  16. 16. Solenoid <ul><li>Electromagnetic are used in solenoids to activated a plunger. When the solenoid is switched on, the plunger is attached to the coil. </li></ul>
  17. 17. Relays <ul><li>Relays enable a low voltage circuit to switch on a high voltage or high current circuit. </li></ul>
  18. 18. Light Dependent Resistor (LDR) <ul><li>An LDR is an input transducer (sensor) which converts brightness (light) to resistance. The resistance decreases as the brightness of light falling on the LDR increases. </li></ul>

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