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GCSE     >Transducer<     Battery     Bulb     Buzzer     Driver     Loudspeaker     Microphone     Motor     Neon     Piezoelectric Sounder     Servo     Seven Segment     Solenoid    

Transducer


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  GCSE    Transducers  0 of 12    Question 252    Components 
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Deadline not set1 of 12    Question 1035    Robot Inputs 
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Deadline not set2 of 12    Question 1032    Robot Outputs 
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Deadline not set8 of 12    Question 1086    Robots and Machines 
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Deadline not set9 of 12    Question 1501    Transducer Buzzer 
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Deadline not set10 of 12    Question 266    Transducers 
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Deadline not set11 of 12    Question 279    Transducers 
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Deadline not set12 of 12    Question 283    Transducers 
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Transducers Convert Energy To or From Electrical Energy

Input Transducers or Sensors

These measure the world and generate a proportional electrical voltage or current.

There are many examples. Here a few ...

Output Transducers

Convert an electrical voltage or current into sound, light, movement or temperature. There are many examples. Here are several ...

Transducer Drivers

Most processing circuits can not provide enough power to drive motors, loudspeakers, lighting systems and so on. Drivers are needed to boost the small signal from the processing circuit. Drivers capable of working at larger currents and voltages include ...

Categorising Input Transducers

 

Active Sensors - Contain Semiconductors

Passive Sensors

Analogue Sensors

  • Electret Microphone - contains an FET pre-amp
  • Accelerometer - Detect the orientation of a phone
  • Light Dependent resistor
  • Thermistor
  • Potentiometer
  • Moving Coil Microphone
  • Conducting Polymer - Changes resistance when deformed.
  • Hall effect sensor - Measures magnetic fields.
  • Capacitor - Capacitance changes with the input
    • plate overlap might change
    • plate spacing might change
    • material between the plates might change

Digital Sensors

  • Optical Switch - IR-LED with photodiode and a transistor switch
  • Shaft Encoders
  • Switch - Resistance = zero or infinity.
  • Microswitch
  • Reed Switch
  • Any kind of switch

 

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