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Investigating the Transistor: A hands on activity.

Investigating the Transistor: A hands on activity. You will be assembling a one transistor amplifier circuit, making it operational, then taking measurements to determine the Current Gain and Voltage Gain and finally, if time, Observing the operation with low frequency AC.

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Investigating the Transistor: A hands on activity.

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  1. Investigating the Transistor:A hands on activity. You will be • assembling a one transistor amplifier circuit, • making it operational, then • taking measurements to determine the Current Gain and Voltage Gain and finally, if time, • Observing the operation with low frequency AC.

  2. Brief Instructions

  3. Components

  4. Assembly • Place each component, except the thermistor, through its corresponding holes in the card, • Ensure correct orientation.

  5. Assembly • Twist together wires that are to be joined, • Connect the thermistor remotely to the card by wires with alligator clips, • Connect the power supply to the card by wires as well.

  6. Operation • Set power supply to 9V, LED should go on. • Cool thermistor with the ice block in the bag, the LED should go off.

  7. Measurements Current Gain

  8. +Red LED 680 Thermistor Swinburne 2,200 Transistor 680 - Black -ve collector base emitter Measurements Current Gain • Determine Base and Collector currents by measuring voltage drop across the 2200 ohm and the top 680 ohm resistors respectively. • Graph values and find gradient of graph. Collector Base

  9. Measurements Voltage Gain

  10. +Red LED 680 Thermistor Swinburne 2,200 Transistor 680 - Black -ve Measurements Voltage Gain • Measure the Base voltage between the Base and the Ground, • Measure the Collector Voltage between the Collector and the Ground, • Graph values and find gradient of graph. Collector Base

  11. "The Brightest Explosions in the Universe - the Greatest Danger to Life", by Professor Edward van den Heuvel, an astronomer in the field of High Energy Astrophysics from University of Amsterdam. Hosted by the Melbourne Planetarium. Thursday 30 November, 6.30pm - 9.00pm, Cost: Adults $15.00, Concession $12.50 and MV Members $10.00. http://vic.aip.org.au/flyer/SW_astro_lecture.pdf "Space Science in Europe: what we've done, what we plan and why we do it." Professor David Southwood, Director of Science, European Space Agency, Paris. Friday, 8th December, 2006, commencing at 6.30pm. Village Roadshow Theatrette, State Library Victoria. http://www.latrobe.edu.au/spacescience/downloads/flyersouthwoodlect.pdf

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