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Typical Circuit Values Tutorial

Typical Circuit Values

The base voltage Vb, is set by potential divider 9K and 1K = 1 volt (ignoring Ib).

The emitter voltage Ve,  is Vb - 0.6 = 0.4 volts.

The emitter current is Ve / Re = 0.0008A.

The voltage across the 5K load resistor is 5000 x .0008 = 4 volts.

Therefore the collector voltage is 10 volts - 4 volts = 6 volts.

The power dissipated by the transistor is the voltage across the transistor multiplied by the current through it. = 5.6 volts x 0.0008A = 0.00448 watts.

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