Electrical Engineering ⇒ Topic : Base Bias with Emitter Feedback
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Sunita
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Base Bias with Emitter Feedback The schematic diagram is shown in Figure (b). The circuit is obtained by adding an emitter resistance to the base bias, i.e., to Figure (a)
Figure (a) Base bias Figure (b) Base bias with emitter follower. Applying Kirchoff's voltage law along the supply base, emitter and ground route, it can be written as: - IBRB - VBE - IERE+VCC = O VCC = IBRB +VBE + IERE ............. (1)
................. (2) Neglecting VBE, Eq. (2) can be expressed as: ............... (3) ................ (4) In this circuit, the good stability of DC operating point can be achieved against changes of β with the help of RE | |
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