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In your question, you are mentioning a resistive element "re".

Do you think that re=Re in your task description? This would be wrong.

The quantity "re" is a BJT parameter. Unfortunately, some authors use such a symbol for the inverse transconductance (re=1/gm).

As we can see, this can lead to severe misunderstandings because, in fact, it is NOT a resistive quantity. It is based on gm - and as such it is 4-pole-parameter (but it carries the unit "Ohm").

EDIT: With a given value for gm=1/re the emitter current is known with Ie=26mV/re. This is a contradiction to the given value of the current source. All these considerations apply to the DC bias point only and have nothing to do with a signal input voltage Vid, which is applied externally,

In your question, you are mentioning a resistive element "re".

Do you think that re=Re in your task description? This would be wrong.

The quantity "re" is a BJT parameter. Unfortunately, some authors use such a symbol for the inverse transconductance (re=1/gm).

As we can see, this can lead to severe misunderstandings because, in fact, it is NOT a resistive quantity. It is based on gm - and as such it is 4-pole-parameter (but it carries the unit "Ohm").

EDIT: With a given value for gm=1/re the emitter current is known with Ie=26mV/re. This is a contradiction to the given value of the current source.

In your question, you are mentioning a resistive element "re".

Do you think that re=Re in your task description? This would be wrong.

The quantity "re" is a BJT parameter. Unfortunately, some authors use such a symbol for the inverse transconductance (re=1/gm).

As we can see, this can lead to severe misunderstandings because, in fact, it is NOT a resistive quantity. It is based on gm - and as such it is 4-pole-parameter (but it carries the unit "Ohm").

EDIT: With a given value for gm=1/re the emitter current is known with Ie=26mV/re. This is a contradiction to the given value of the current source. All these considerations apply to the DC bias point only and have nothing to do with a signal input voltage Vid, which is applied externally,

added 159 characters in body
Source Link
LvW
LvW
  • 28k
  • 3
  • 24
  • 56

In your question, you are mentioning a resistive element "re".

Do you think that re=Re in your task description? This would be wrong.

The quantity "re" is a BJT parameter. Unfortunately, some authors use such a symbol for the inverse transconductance (re=1/gm).

As we can see, this can lead to severe misunderstandings because, in fact, it is NOT a resistive quantity. It is based on gm - and as such it is 4-pole-parameter (but it carries the unit "Ohm").

EDIT: With a given value for gm=1/re the emitter current is known with Ie=26mV/re. This is a contradiction to the given value of the current source.

In your question, you are mentioning a resistive element "re".

Do you think that re=Re in your task description? This would be wrong.

The quantity "re" is a BJT parameter. Unfortunately, some authors use such a symbol for the inverse transconductance (re=1/gm).

As we can see, this can lead to severe misunderstandings because, in fact, it is NOT a resistive quantity. It is based on gm - and as such it is 4-pole-parameter (but it carries the unit "Ohm")

In your question, you are mentioning a resistive element "re".

Do you think that re=Re in your task description? This would be wrong.

The quantity "re" is a BJT parameter. Unfortunately, some authors use such a symbol for the inverse transconductance (re=1/gm).

As we can see, this can lead to severe misunderstandings because, in fact, it is NOT a resistive quantity. It is based on gm - and as such it is 4-pole-parameter (but it carries the unit "Ohm").

EDIT: With a given value for gm=1/re the emitter current is known with Ie=26mV/re. This is a contradiction to the given value of the current source.

Source Link
LvW
LvW
  • 28k
  • 3
  • 24
  • 56

In your question, you are mentioning a resistive element "re".

Do you think that re=Re in your task description? This would be wrong.

The quantity "re" is a BJT parameter. Unfortunately, some authors use such a symbol for the inverse transconductance (re=1/gm).

As we can see, this can lead to severe misunderstandings because, in fact, it is NOT a resistive quantity. It is based on gm - and as such it is 4-pole-parameter (but it carries the unit "Ohm")