Aggregate Demand. The AD curve shows the relationship between prices and the demand for output in an. economy. W can derive the AD curve in the following way. 1. The Monetarist View of AD. Monetarists believe that shifts in AD are cause primarily by changes in the money. supply. Using the equation of exchange: MV â¡ PY.
These terms have given rise to abbreviations for the types of switch which are used in the electronics industry such as  single-pole, single-throw  (SPST) (the simplest type, on or off) or  single-pole, double-throw  (SPDT), connecting either of two terminals to the common terminal.
(In multiway switching, the correspondence between a single switch's state and whether lights are on or off depends on the state of the other switch[es] in the circuit.) Design. The switches may be single or multiple, designed for indoor or outdoor use. Optional extras may include dimmer-controls, environmental protection, weather and security protection. In residential and light commercial lighting systems, the light switch directly controls the circuit feeding the lamps.