The power supply 6, wherein the audible noise reduction circuit changes {HEAD ~ the peak value} of current pulses based on monitoring a switch drive signal for the at least one switch, or monitoring a load current, or monitoring {TAIL ~ a feedback voltage} 
based on monitoring
The power supply 6 , wherein the audible noise reduction circuit changes { HEAD ~ the peak value } of current pulses based on monitoring a switch drive signal for the at least one switch , or monitoring a load current , or monitoring { TAIL ~ a feedback voltage }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL