18240 Element two - Components INPUTS OUTPUTS PURPOSE TYPICAL USE.

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Presentation transcript:

18240 Element two - Components INPUTS OUTPUTS PURPOSE TYPICAL USE

Battery Switch Bulb LED Transistor Resistor LDR Variable resistor Thermistor Capacitor Diode Buzzer

Component - Battery Purpose Input output Typical use To provide a voltage which will drive a current when connected to a circuit. Chemical energy Electrical energy To provide portable energy source for an mp3 player

Component - LED Purpose Input output Typical use Visible indicator of circuit state Electrical energy Light energy Power Indicator on stereo

Component - Switch Purpose Input output Typical use To stop or allow current to flow in a circuit Physical movement Electrical continuity To turn your stereo power supply on and off

Component - Transistor Purpose Input output Typical use To amplify or control a current Small current Large current Amplifying a signal or switching a voltage

Component - Bulb Purpose Input output Typical use Converts electrical energy into light energy Electrical energy Light energy To light a room

Component - Resistor Purpose Input output Typical use To control currents and voltages in circuits current voltage To control the current in an LED

Component – Variable Resistor Purpose Input output Typical use To control current and voltage in a circuit Mechanical movement Change in resistance Volume control

Component – Light dependent resistor Purpose Input output Typical use To control current or voltage in a circuit depending on the amount of light Light energy Change in resistance Light sensor

Component - Thermistor Purpose Input output Typical use To control current or voltage in a circuit depending on temperature temperature Change in resistance Temperature sensor

Component - Buzzer Purpose Input output Typical use To convert electrical energy into sound DC current Buzzing sound To signal an alarm

Component - Diode Purpose Input output Typical use To allow current to flow in one direction only Voltage Current flowing in one direction only Converting AC to DC

Component – Capacitor Purpose Input output Typical use To store electrical charge. Electric charge Voltage Smoothing DC voltage levels