Hi guys, here again, As you can remember from the other post I wanted to understand what's wrong in the circuit (CMOS buffer or push pull amplifier) attached.
Most of you gave me good suggestions to make it work. However before to give up with that buffer I wanted to check for real if that buffer I proposed cannot really work and how it behaves. I built the circuit by using the typical CD4007 and creating a buffer . In the attachment I wrote the number of pins and the signals.
My test consisted to bias the input of the buffer with a voltage around 5V and check what happen if I increase the input voltage of the signal. This test could give me some info about what is the caratteristc curve (vo/vin) of the buffer. However the output seems to be distorted by the buffer and I don't get why.
I attached some pictures about measurements with oscilloscope. the green line is the input, the yellow line is the output.
Anyone can explain me what happen when I increase the amplitude of the input signal? And why there is a distortion?
Most of you gave me good suggestions to make it work. However before to give up with that buffer I wanted to check for real if that buffer I proposed cannot really work and how it behaves. I built the circuit by using the typical CD4007 and creating a buffer . In the attachment I wrote the number of pins and the signals.
My test consisted to bias the input of the buffer with a voltage around 5V and check what happen if I increase the input voltage of the signal. This test could give me some info about what is the caratteristc curve (vo/vin) of the buffer. However the output seems to be distorted by the buffer and I don't get why.
I attached some pictures about measurements with oscilloscope. the green line is the input, the yellow line is the output.
Anyone can explain me what happen when I increase the amplitude of the input signal? And why there is a distortion?
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