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Band 1: How boules or ingots - single crystals of semiconducting materials - are produced by the silicon industry. Band 2: Shows the process stages for the BY249 diode, with explanations of some of the...
When a stepped-voltage pulse is applied to the input of a transistor, the curve of the output current as a function of time will show deviations from the rectangular form. Discusses the rise-time TR and...
Considers a P-N-P crystal having a wide central region. The concentration graphs for this crystal are given and it is seen how the application of a forward voltage at one of the P-N junctions, and a reverse...
The four states of operation of a transistor that occur in switching applications are examined. If both junctions are biased in the reverse direction the transistor operates in the cut-off state. The normal...
James Hough demonstrates a graphical method for calculating the behaviour of the transistor, or any other amplifying device, from their static characteristics. He first explains the load line taking the...
James Hough derives the amplifying properties of a junction transistor from basic four terminal network theory. These are current amplification, overall gain, input and out impedances.
An elementary introduction to the properties of semi-conductors, the PN junction and the junction transistor.
Early use of crystals; working principles of the germanium diode and the transistor; applications and advantages.
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