I have been tasked with designing and building a device that will use a .4V Peak to Peak amplitude voltage source to power 5 IR LED's in parallel. I have attached my design schematic, which includes a low pass filter amplifier with a cutoff frequency of 120Hz and a gain of 101 (though the opamp rails will saturate at +/- 9V), a full wave bridge rectifier made of 4 diodes, a smoothing capacitor, and a current limiting resistor. My question is: will the design pictured deliver the proper voltage and current to the 5 IR LED load? Each IR LED needs between 20 and 100 mV of current and drops aprox. 2V. Do I need a resistor before the rectifier? Is my smoothing capacitor the proper value? I it is a new concept to me. Thank you so much for your help, I really appreciate it.