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close this bookAmplifier Teaching Aid (GTZ, DED; 86 pages)
View the documentPreface
View the documentIntroduction
Open this folder and view contentsLesson 1 - Semiconductor Review
Open this folder and view contentsLesson 2 - Bipolar Transistor
Open this folder and view contentsBipolar Transistor II
View the documentFirst Evaluation
close this folderLesson 4 - Transistor Fundamentals
close this folderLesson Plan
View the documentThe load line
View the documentThe operating point
View the documentRecognizing saturation
View the documentThe transistor switch
View the documentWorksheet No. 4
Open this folder and view contentsLesson 5 - Transistor Biasing
Open this folder and view contentsLesson 6 - Transistor Biasing II
View the documentSecond Evaluation
Open this folder and view contentsLesson 7 - Small Signal Amplifier
Open this folder and view contentsLesson 8 - Small Signal Amplifier II
Open this folder and view contentsLesson 9 - Small Signal Amplifier III
Open this folder and view contentsLesson 10 - Large Signal Amplifier
View the documentThird Evaluation
 

The transistor switch

Ex: Circuit example for a transistor switch:


Fig. 4-7: Transistor switch

The transistor operate only at saturation and cutoff

Switch closed: Transistor in hard saturation Vout≈ 0V

Switch open : Transistor in cutoff


IC drops to zero

Vout≈ 10V

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