The device includes a circuit in parallel with the switch which contains a transistor and {HEAD ~ a diode} to cause {TAIL ~ such voltage drop} in the circuit as to prevent current flowing through a second diode when the switch is closed 
to cause
The device includes a circuit in parallel with the switch which contains a transistor and { HEAD ~ a diode } to cause { TAIL ~ such voltage drop } in the circuit as to prevent current flowing through a second diode when the switch is closed
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH