For an experiment on photosynthesis, I would like to amplify a 0-10V 100Hz to 1µHz (~a day) sine wave from a function generator to drive a 24V 3A LED module.
I already did that with a square signal and a MOSFET as amplification system and everything worked fine.
For the sine wave, I can't use MOSFET, so I was looking at OPamp but I read in some various places (here for example : Very low frequency instrumentation amplifier) that, as far as I understood, classical OPamp based systems were not well suited for low frequency and DC amplification.
I also thought to an other option which could use a higher PWM base frequency and then modulate the duty cycle to simulate the sine wave.
Would you have any advice to guide my search ? Thank you !