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A self-bias circuit (with an emitter resiistor) stabilizes the__________ of the circuit against variations in temperature and process parameters.
- a)current gain
- b)base-emitter voltage
- c)collector current
- d)base current
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
A self-bias circuit (with an emitter resiistor)stabilizes the_________...
A self-bias circuit is used to establish a stable operating point in the self-biasing configuration. If Ic tends to increase, say, because Ico has risen as a result of an elevated temperature, the current in Re increases. As a consequence of the increase in voltage drop across Re, the base current is decreased. Hence, Ic will increase less than it would have been no self-biasing resistor Re.
Most Upvoted Answer
A self-bias circuit (with an emitter resiistor)stabilizes the_________...
Explanation:
A self-bias circuit is a type of biasing circuit used in electronic circuits to set the DC operating point of a transistor. It is also known as a voltage divider bias circuit. The self-bias circuit uses a voltage divider network made up of two resistors, R1 and R2, to set the base bias voltage. The base-emitter junction is forward biased by this voltage, which sets the DC operating point of the transistor. The emitter resistor, RE, is added to the circuit to stabilize the collector current against variations in temperature and process parameters.
Stabilizing the Collector Current:
The collector current is the current flowing through the collector of the transistor. The collector current is directly proportional to the base current and the current gain of the transistor. The collector current is also affected by variations in temperature and process parameters such as the gain of the transistor.
The emitter resistor, RE, is added to the circuit to stabilize the collector current against these variations. The emitter resistor provides negative feedback to the circuit, which reduces the gain of the transistor. This reduction in gain compensates for any variations in the gain of the transistor due to temperature or process parameters, thereby stabilizing the collector current.
Conclusion:
In conclusion, the self-bias circuit with an emitter resistor stabilizes the collector current of the circuit against variations in temperature and process parameters. This stabilization is achieved by adding negative feedback to the circuit using the emitter resistor, which reduces the gain of the transistor and compensates for any variations in gain due to temperature or process parameters.
A self-bias circuit is a type of biasing circuit used in electronic circuits to set the DC operating point of a transistor. It is also known as a voltage divider bias circuit. The self-bias circuit uses a voltage divider network made up of two resistors, R1 and R2, to set the base bias voltage. The base-emitter junction is forward biased by this voltage, which sets the DC operating point of the transistor. The emitter resistor, RE, is added to the circuit to stabilize the collector current against variations in temperature and process parameters.
Stabilizing the Collector Current:
The collector current is the current flowing through the collector of the transistor. The collector current is directly proportional to the base current and the current gain of the transistor. The collector current is also affected by variations in temperature and process parameters such as the gain of the transistor.
The emitter resistor, RE, is added to the circuit to stabilize the collector current against these variations. The emitter resistor provides negative feedback to the circuit, which reduces the gain of the transistor. This reduction in gain compensates for any variations in the gain of the transistor due to temperature or process parameters, thereby stabilizing the collector current.
Conclusion:
In conclusion, the self-bias circuit with an emitter resistor stabilizes the collector current of the circuit against variations in temperature and process parameters. This stabilization is achieved by adding negative feedback to the circuit using the emitter resistor, which reduces the gain of the transistor and compensates for any variations in gain due to temperature or process parameters.
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A self-bias circuit (with an emitter resiistor)stabilizes the__________ of the circuit againstvariations in temperature and process parameters.a)current gainb)base-emitter voltagec)collector currentd)base currentCorrect answer is option 'C'. Can you explain this answer?
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