First Evaluation

No. 1 Define extrinsic semiconductor and intrinsic semiconductor.

No. 2 At room temperature an intrinsic silicon crystal acts approximately like a ..................

No. 3 The current in a transistor is split into parts. Which is the highest and how is it split?

No. 4 Please sketch the basic transistor connections.

No. 5 If the base current is 100 mA and the current gain is 30, what is the collector current?

No. 6 Sketch a typical set of collector curves, label the graph and mark the regions of operation.

No. 7 a) Please calculate the current gain b.

b)What is the voltage between collector and ground?

Figure

No. 8 Describe how you can find the base lead of an unknown transistor with the help of an ohmmeter.