A transistor is a semiconductor device used to amplify and switch electronic signals and electrical power. It is composed of semiconductor material with at least three terminals for connection to an external circuit. A voltage or current applied to one pair of the transistor's terminals changes the current flowing through another pair of terminals. Because the controlled output power can be higher than the controlling input power, a transistor can amplify a signal. Bipolar transistors are so named because their operation involves both electrons and holes. These two kinds of charge carriers are characteristic of the two kinds of doped semiconductor material.
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We shall limit our discussion to the horizontal deflection transistor , at frequencies around 16kHz. The current requirements of the transistor switch varied between 2A. This is a condition where the transistor actually conducts in the reverse direction due to a reverse voltage applied across the transistor , A typical half-bridge circuit driving an inductive load is shown in Figure 2. This circuit is a basic building block in power electronics.
2SC3205 Bipolar Transistor
2SC3205 Datasheet, Equivalent, Cross Reference Search