but i need a 0.5 vrms in inputTry to play with this version
What is your load impedance?sorry, you are right i forgot the conversion, may i ask how about the circuit with the following specs;
Vcc=12V
Vin=1vrms
power= 3 watts
gain of 8
thank you again
3 ohmsWhat is your load impedance?
jony130 when i try your circuit it has only 4.8 gain , what components should i adjustBut 0.5 Vrms = 0.7Vpeak
how about changing the load ? is it possible to have a gain of 8?To get 2W at the output load (2.66Ω) we need VLoad_RMS = √(P*RL) = √(2W*2.66Ω) = 2.3V RMS --->3.25V peak. So the gain should be around 2.3V/0.5V ≈ 4.6[V/V] If the voltage gain need to be equal to 8[V/V] Vin cannot be larger than 2.3/8 = 0.29V RMS.
So to have a gain of 8 and Vin = 0.5V you need change the value of a R1 resistor and add a voltage divider.
First question the specs are:Is 3 ohms the same load as in the first question?
Your design specifications were:
Gain = 8
Vi = 0.5V (0.707 pk or 1.414 pk-pk) Vo would equal 4.0 V rms (5.656 V pk or 11.312V pk-pk)
Power = 2W
Second circuit:
A 12V supply will NOT swing the output voltage 22.624V peak to peak.
What is the maximum output voltage (peak) having a supply of 12 volts ?
A 12 V supply can swing a maximum of 12V. Zero to 12. You are designing an amplifier that takes a sine wave input and produced a higher power sine wave to the load with little distortion (no visible clipping). Look at your output circuit. Even if you put the junction of the two emitter resistors at 6.0 volts, then one half cycle can go from about (0.5V + Vce) to 6 volts and the other half cycle can go from 6V to (12V - (Vce + 0.5V)) at 1 ampere. Outside of that, you will see clipping.@Merk Morondos
What is the maximum output voltage (peak) having a supply of 12 volts ?
Do you mean the one in post number 1?Ok I get it thanks for your help. One question, is my schematic right? having a .3Vrms, gain 8, 12 Vs, 3 Watts
Do you mean the one in post number 1?
No, If i just edited my schematic on this specs: .3Vrms, 12 Vs Can I have gain 8 and 3 Watts?
Have you consulted with your professor to see what he thinks of the inconsistency in the assignment?
I will try to talk to my professor about this one
What does the measurements from your simulation tell you?@Merk Morondos
No, If i just edited my schematic on this specs: .3Vrms, 12 Vs Can I have gain 8 and 3 Watts?
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by Jake Hertz
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