The circuit 8, further comprising hysteresis means connected between said first input terminal of {TAIL ~ said second comparator} and {HEAD ~ an output terminal} of said second comparator for providing a hysteresis effect 
The circuit 8 , further comprising hysteresis means connected between said first input terminal of { TAIL ~ said second comparator } and { HEAD ~ an output terminal } of said second comparator for providing a hysteresis effect
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH