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Resistors Capacitors Transistors Light Emitting Diodes (LED) Potentiometers Silicon Controlled Rectifiers (SCR)

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Presentation on theme: "Resistors Capacitors Transistors Light Emitting Diodes (LED) Potentiometers Silicon Controlled Rectifiers (SCR)"— Presentation transcript:

1 Resistors Capacitors Transistors Light Emitting Diodes (LED) Potentiometers Silicon Controlled Rectifiers (SCR)

2  passive two-terminal electrical component that implements electrical resistance as a circuit element passivetwo-terminalelectrical componentelectrical resistance  help control current flow in a circuit.  protect electronics from circuit overload or destruction  perform as filters or voltage dividers Color bands indicate strength of resistance (ohms)

3  A capacitor (originally known as condenser) is a passive two-terminal electrical component used to store energy in an electric fieldpassivetwo-terminalelectrical componentenergyelectric field  characterized by a single constant value, capacitance, measured in farads capacitancefarads

4  widely used in electronic circuits for blocking direct current while allowing alternating current to passdirect currentalternating current

5  widely used in electronic circuits for blocking direct current while allowing alternating current to pass direct currentalternating current  in filter networks, for smoothing the output of power suppliespower supplies

6  widely used in electronic circuits for blocking direct current while allowing alternating current to pass direct currentalternating current  in filter networks, for smoothing the output of power suppliespower supplies  in the resonant circuits that tune radios to particular frequenciesresonant circuitsfrequencies

7 widely used in electronic circuits for blocking direct current while allowing alternating current to pass direct currentalternating current in filter networks, for smoothing the output of power suppliespower supplies in the resonant circuits that tune radios to particular frequenciesresonant circuitsfrequencies in electric power transmission systems for stabilizing voltage and power flow

8  a semiconductor device used to amplify and switch electronic signals and electrical powersemiconductor deviceamplify switchelectronic

9  a semiconductor device used to amplify and switch electronic signals and electrical powersemiconductor deviceamplify switchelectronic  composed of semiconductor material with at least three terminals for connection to an external circuitsemiconductor

10  a semiconductor device used to amplify and switch electronic signals and electrical powersemiconductor deviceamplify switchelectronic  composed of semiconductor material with at least three terminals for connection to an external circuitsemiconductor voltage or current applied to one pair of the transistor's terminals changes the current flowing through another pair of terminals

11  a semiconductor device used to amplify and switch electronic signals and electrical powersemiconductor deviceamplify switchelectronic  composed of semiconductor material with at least three terminals for connection to an external circuitsemiconductor voltage or current applied to one pair of the transistor's terminals changes the current flowing through another pair of terminals is the fundamental building block of modern electronic deviceselectronic devices

12  can amplify a signalamplify

13  can amplify a signalamplify  the vast majority of transistors now are produced in integrated circuits (often shortened to IC, microchips or simply chips)integrated circuits

14  can amplify a signalamplify  the vast majority of transistors now are produced in integrated circuits (often shortened to IC, microchips or simply chips)integrated circuits  essential usefulness of a transistor comes from its ability to use a small signal applied between one pair of its terminals to control a much larger signal at another pair of terminals. This property is called gaingain

15  can amplify a signalamplify  the vast majority of transistors now are produced in integrated circuits (often shortened to IC, microchips or simply chips)integrated circuits  essential usefulness of a transistor comes from its ability to use a small signal applied between one pair of its terminals to control a much larger signal at another pair of terminals. This property is called gaingain  can be used to turn current on or off in a circuit as an electrically controlled switchswitch

16  is a semiconductor light sourcesemiconductor

17  is a semiconductor light sourcesemiconductor  When switched on, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescenceelectrons recombineelectron holesphotonselectroluminescence

18  is a semiconductor light sourcesemiconductor  When switched on, electrons are able to recombine with electron holes within the device, releasing energy in the form of photons. This effect is called electroluminescenceelectrons recombineelectron holesphotonselectroluminescence  advantages over incandescent light sources including lower energy consumption, longer lifetime, improved physical robustness, smaller size, and faster switching advantageslower energy consumption lifetime

19  A potentiometer, informally, a pot, in electronics technology, is a three-terminal resistor with a sliding contact that forms an adjustable voltage dividerterminal resistorvoltage divider

20  A potentiometer, informally, a pot, in electronics technology, is a three-terminal resistor with a sliding contact that forms an adjustable voltage dividerterminal resistorvoltage divider or it can act as a variable resistor or rheostat.

21  commonly used to control electrical devices such as volume controls on audio equipment.

22  Potentiometers operated by a mechanism can be used as position transducers, for example, in a joysticktransducersjoystick

23  is a four-layer solid state current controlling devicesolid statecurrent

24  is a four-layer solid state current controlling devicesolid statecurrent  "silicon controlled rectifier" or SCR is General Electric's trade name for a type of thyristor, which act as bistable switches, conducting when their gate receives a current triggerGeneral Electricthyristorbistable

25  is a four-layer solid state current controlling devicesolid statecurrent  "silicon controlled rectifier" or SCR is General Electric's trade name for a type of thyristor, which act as bistable switches, conducting when their gate receives a current triggerGeneral Electricthyristorbistable  used in switching applications - In the normal "off" state, the device restricts current to the leakage current. When the gate-to-cathode voltage exceeds a certain threshold, the device turns "on" and conducts current

26  Now sort your components in your bag into catagories and compare with the parts list in the yellow book to see how you did  List the symbols for them in a circuit diagram in your notebooks


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