The oscilloscope traces below are taken from a 2 mosfet mirror current circuit with a light dependant resistor as the load. Can someone help me understand why the yellow signal is not enveloping the AM signal? Is it to do with the latency of the LDR? Also, to me the Amplitude of the green wave doesn't look like it changes although I have been told that this is a form of amplitude modulation.
The only other thing I could think of was maybe some kind of internal capacitance in the MOSFETs was causing the shift up and down?
I'd really like to understand this


The only other thing I could think of was maybe some kind of internal capacitance in the MOSFETs was causing the shift up and down?
I'd really like to understand this

