Basic ELECTRONICS

(2+1)ENGR MUHAMMAD SHAKEEL AKRAM

ELECTRONICS ENGINEERING FICT, BUITEMS.

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CHAPTER 5

Transistor bias circuits

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DC Operating Point (Q-Point) • Dc Bias

• Establishes the DC operating point (Q-point) for proper linear operation

• Otherwise will go in saturation or cutoff

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DC Bias

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DC Bias

Ic = β IB

VCE = Vcc – IC RC

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DC load line

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Voltage Divider Bias

• I2 >> IB (Stiff Voltage Divider)

Voltage Divider Bias

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