The control triggers one of {HEAD ~ the electronic switches} to conduct and discharge {TAIL ~ the capacitor} in response to a predetermined response speed 
to discharge
The control triggers one of { HEAD ~ the electronic switches } to conduct and discharge { TAIL ~ the capacitor } in response to a predetermined response speed
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH