Patent ID: 6172484
Filing Date: 2001-01-09
Classification: H02M

Abstract:
A method of controlling a load dependent upon at least one predetermined condition, said method comprising the steps of:providing at least one sensor;determining a presence of the at least one predetermined condition with said at least one sensor;transmitting a signal from said at least one sensor to an electrical processor dependent upon said determining step;controlling a switch device with said electrical processor dependent upon the signal from the at least one sensor, said switch device having a first state in which said switch device connects a power source to the load, and a second state in which said switch device connects said power source to each of said at least one sensor, said electrical processor and a rechargeable energy storage device;if said predetermined condition is not present, maintaining said switch device in said second state while said predetermined condition is not present; andif said predetermined condition is present, cyclically and continuously switching said switch device between said first state and said second state while said predetermined condition is present, said cyclical and continuous switching occurring at at least one predetermined frequency, said rechargeable energy storage device temporarily supplying power to each of said at least one sensor and said electrical processor when said switch device is in said first state, said power source recharging said rechargeable energy storage device when said switch device is in said second state.