My MOSFET amplifier designed for music

left wrong...100 --> 10*10^0= 1nF
right correct cap
wrong cap_1nF should be 100nF.jpeg



sorry guys...i am so sorry for that ...i feel shame..

chris
 
here are the measurements with the correct 0,1µF cap

please comment these.
thx
 

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  • 3Hz_0,26mVpp.jpg
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  • 5Hz_0.9Vpp.jpg
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  • 9Hz_10,4Vpp.jpg
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  • 20Hz_2.35Vpp.jpg
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  • 10Hz_10,66Vpp.jpg
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  • 100Hz_1.94Vpp.jpg
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  • 300Hz_1.9Vpp.jpg
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I'm sure they will be fine. Its hard to decipher from pictures.

If you want to compare to the simulation then set the output for 4 volts peak (8 volt peak to peak) at 200 Hz. The output of the opamp should be around 15 millivolts peak (30 millivolts peak to peak).

It doesn't need a load for that.
 
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I'm sure they will be fine. Its hard to decipher from pictures.

If you want to compare to the simulation then set the output for 4 volts peak (8 volt peak to peak) at 200 Hz. The output of the opamp should be around 15 millivolts peak (30 millivolts peak to peak).

It doesn't need a load for that.


not okay.
no load
yelow input
light blue ouput (no coil)
dark blue is the PIN 6 looks not okay.
it is more then 30mVpp
(the light in my "office" are horrible...)
 

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  • 200Hz_1W_output.jpg
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  • 200Hz_1W_output_and ouput opamp_pin 6.jpg
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