Two line switch and power sharing for programmable means

摘要

The present invention comprises means and methods for power sharing for a lower voltage programmable means for operating a switch which operates at a substantially higher voltage. The present invention is preferably applied to two power line thermostat control of HVAC equipment. Although a programmable thermostat is described in the specific description of the invention as the programmable means, it is intended that the present invention be applicable to other such devices where power is stored by capacitance or in rechargeable batteries for use by lower voltage programmable means while at the same time permitting sufficient current flow through a substantially higher power switch to operate directly or indirectly electrical power equipment.