Capacitor CF and inductor LF provides filtering of {HEAD ~ these pulses} of {TAIL ~ current IL} to produce a more steady flow of current through resistor RL 
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Capacitor CF and inductor LF provides filtering of { HEAD ~ these pulses } of { TAIL ~ current IL } to produce a more steady flow of current through resistor RL
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH