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A specified amount of current is allowed to flow through the diode. if the current passing through the diode exceeds the specific value, the diode gets heated and is likely to be damaged. therefore in a biasing circuit a resistance R has been applied , which limits the current passing through the diode within a specific value.

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Why emitter bias circuit is called self bias?

The emitter bias circuit is called self-bias because the bias voltage across the emitter-resistor is based on the transistor's own characteristics. The bias voltage adjusts itself based on the varying collector current to stabilize the operating point of the transistor. It is a self-adjusting mechanism that helps maintain a stable bias point for the transistor.


Why emitter bias circuit is called self bias circuit?

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What are the different types of biasing technique for amplifier?

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Why would the gain go up in a circuit board when you put an emitter capacitor in the circuit?

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