Electrical and Computer Engineering Electrical and Electronic Circuits

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Emitter Current

A saturated npn transistor has a base to emitter-applied voltage of 0.6V. The collector to emitter voltage is 0.2V. The collector current is 12mA. The beta value of the transistor is 30. What is the emitter current? A) 2.5 mA B) greater than 12 mA C) less than 12 mA, but greater than 3mA D) cannot be determined from the information provided

Subject:

Electrical and Computer Engineering

Topic:

Electrical and Electronic Circuits

Posting ID:

36596

OTA ID:

104036

Transfer function

I am attaching a scanned copy of a question, please answer and show method or obtaining answer. Thanks

Subject:

Electrical and Computer Engineering

Topic:

Electrical and Electronic Circuits

Posting ID:

36597

OTA ID:

103074

Current flow through diode

I am attaching a scanned copy of a question, please answer and show method or obtaining answer. Thanks

Subject:

Electrical and Computer Engineering

Topic:

Electrical and Electronic Circuits

Posting ID:

36598

OTA ID:

102509

circuits check attachment

Calculate the input impedance of the buffer amplifier at high frequencies (ie. the impedance Xc≈0).Assume the actual gain of the amplifier with feedback is 0.99 (ie. it is a real amplifier!). check attachement doc file for pic

Subject:

Electrical and Computer Engineering

Topic:

Electrical and Electronic Circuits

Posting ID:

36705

OTA ID:

104130

Lossy current source

Consider the attached circuit. What is the smallest value R2 can have? What is the largest value that R1 can be given? Thanks

Subject:

Electrical and Computer Engineering