Mild temperatures that range from the high 50s to the upper 70s in September and the low 40s and upper 50s in November make touring around Madrid's El Rastro market and Retiro Park immensely enjoyable. This is a good time to find a deal on a hotel since many slash their rates this time of year.
changeover - an event that results in a transformation. conversion, transition. transformation, transmutation, shift - a qualitative change. glycogenesis - the conversion of glucose to glycogen when the glucose in the blood exceeds the demand. isomerisation, isomerization - the conversion of a compound into an isomer of itself.
A switch with both types of contact is called a changeover switch. These may be  make-before-break  ( MBB  or shorting) which momentarily connects both circuits, or may be  break-before-make  ( BBM  or non-shorting) which interrupts one circuit before closing the other.