Hi,
Please I need help for this problem. It is due in few hours!
The main problem is that I dont succeed to visualize the problem to make a drawing.
please, can someone help me?
(the context of the course is microelectronics on amplifier)
A compact disc (CD) player laser pick-up provides a signal output of 10[mV]peak to peak (pp) and has an output resistance of 10[kW]. The pick-up is to be connected to a speaker whose equivalent resistance is 8[W].
a) Calculate the voltage that would be delivered to the speaker if the speaker were connected directly to the pick-up.
b) Assume that the speaker needs 20[V]pp to deliver clear acoustical output. Design an equivalent circuit for an amplifier that would deliver this output when connected between the pick-up and the speaker.
I have a possible solution for the question b) given by the teacher as follow:
One possible solution would be a transconductance amplifier with Gmsc = 900; Ri = 10[kOhm]; Ro = 10[Ohm]
But I cannot figure out how they get those values. I suspect they chose some values for Ro and/or Ri
Thank you
Please I need help for this problem. It is due in few hours!
The main problem is that I dont succeed to visualize the problem to make a drawing.
please, can someone help me?
(the context of the course is microelectronics on amplifier)
A compact disc (CD) player laser pick-up provides a signal output of 10[mV]peak to peak (pp) and has an output resistance of 10[kW]. The pick-up is to be connected to a speaker whose equivalent resistance is 8[W].
a) Calculate the voltage that would be delivered to the speaker if the speaker were connected directly to the pick-up.
b) Assume that the speaker needs 20[V]pp to deliver clear acoustical output. Design an equivalent circuit for an amplifier that would deliver this output when connected between the pick-up and the speaker.
I have a possible solution for the question b) given by the teacher as follow:
One possible solution would be a transconductance amplifier with Gmsc = 900
But I cannot figure out how they get those values. I suspect they chose some values for Ro and/or Ri
Thank you