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10 questions linked to/from Why am I getting heavy output distortion from a BJT amplifier when driving an 8 ohm load?
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4 votes
3 answers
1k views

I am working on an amplifier to to drive a tiny 4Ω 3W speaker with input from my guitar. I have made a simple circuit to amplify the voltage of the input through an op amp with a pot for gain, however ...
VALKYRIEiSr's user avatar
  • 421
5 votes
4 answers
684 views

I've started a small project to renovate/rebuild an old record player for my wife. I have a degree in Electrical Engineering, but it's been almost 15 years since I last had to project/build a circuit, ...
Yuri Oliveira's user avatar
  • 51
1 vote
4 answers
357 views

The following is an amplifier circuit I am working on: It worked perfectly as intended in simulation, however, I wanted to take the output from the transistors and feed it back into the op amp as to ...
VALKYRIEiSr's user avatar
  • 421
2 votes
3 answers
410 views

I designed a multi-stage amplifier (I know, so original) for my circuits class. It follows all the parameters that are needed: Vs (sine wave) of 10 mV pk-pk Vdc of 15 V Gain of -250 without load (2.5 ...
Boost's user avatar
  • 21
1 vote
2 answers
654 views

I am working on a school project and I am struggling to design what is supposed to be an easy CC-amplifier. All other parts of the circuit are calculated and should work. The power amplifier is what's ...
VinFurr's user avatar
  • 11
1 vote
3 answers
297 views

I am design a 1W audio amplifier and i want to have 8V peak to peak output signal but if i increased the R4 resistor then the output signal would be clipped. My input is 0.3V max sinewave. Here is my ...
Phong Tô's user avatar
  • 13
2 votes
2 answers
191 views

I am a student in in college level physics and so I do not have a lot of knowledge when it comes to circuits and the different electrical components. Still, as a project, I decided to try to build an ...
Boldumus's user avatar
  • 43
1 vote
2 answers
203 views

So, we've been assigned to simulate a circuit to drive an 8ohm 0.25 watts speaker/load with a 3V voltage supply (DC) and a test input of 300mV peak-to-peak, 1kHz zero-offset sine-wave. (No additional ...
archaeon red's user avatar
  • 11
0 votes
3 answers
370 views

I am trying to design a power amplifier for a 20W two-way speaker. I want it to have a differential input stage, a common emitter voltage amplification stage and a class AB output stage/current ...
Alfie Wren-Swords's user avatar
  • 49
0 votes
1 answer
258 views

I want to output an audio signal from a uC to a piezo buzzer. I first tried the obvious solution with a single transistor in series with the buzzer, but at 3V the sound volume was a bit too low. The ...
Icebug's user avatar
  • 1