Hey,
I am new to this forum and hope to increase my activity on the forums in the future as this forum has alot of help and resources available.
I have decided to read ahead in the summer holidays before uni starts so was hoping for some help on this question I have attempted to solve.
Question: Find the emitter voltage and current in each transistor shown below, for which hfe is 100 and can be
considered to be very high (i.e. ic ~ ie). Remember Vbe ~ 0.6V.
I have managed to get a value (incorrect) the emitter voltage but could not work out how to eliminate/ find the currents in that circuit. I have annotated my working to help you guys follow through my working.
The correct answer is:
ve = 3.6V, ie = 36mA
See the attached pdf for my attempt at solving the question. It includes a circuit diagram aswell.
Thanks in advance.
I am new to this forum and hope to increase my activity on the forums in the future as this forum has alot of help and resources available.
I have decided to read ahead in the summer holidays before uni starts so was hoping for some help on this question I have attempted to solve.
Question: Find the emitter voltage and current in each transistor shown below, for which hfe is 100 and can be
considered to be very high (i.e. ic ~ ie). Remember Vbe ~ 0.6V.
I have managed to get a value (incorrect) the emitter voltage but could not work out how to eliminate/ find the currents in that circuit. I have annotated my working to help you guys follow through my working.
The correct answer is:
ve = 3.6V, ie = 36mA
See the attached pdf for my attempt at solving the question. It includes a circuit diagram aswell.
Thanks in advance.
Attachments

323.8 KB Views: 28