DIGITAL VOLTAGE CONTROLLER

摘要

A high-efficiency digital voltage controller capable of providing monotonically-varying stepwise voltage, said controller comprises of a plurality of two-terminal voltage modules connected in series; within each module one or more two-terminal voltage cells of identical voltage each and connected in series; within each module a plurality of switches controllable to connect any number of the voltage cells in series to the output terminals of the voltage module; the ratios of the magnitudes of voltage of any one voltage cell between the voltage modules being substantially equal to integer values uniquely defined by present invention, according to the numbers of voltage cells in each of the voltage modules; said plurality of switches being controlled by a control module implemented in any suitable logic.

主权项

1. A voltage controlling apparatus, comprising:
A number of at least one two-terminal voltage modules connected in series; in each voltage module a number of at least one two-terminal voltage cells connected in series to the two terminals of the module, wherein the voltage magnitudes of the voltage cells are substantially equal; wherein the magnitudes of the voltage cells between the voltage modules bear ratios V1:V2:V3: . . . Vm: . . . , in an order of increasing magnitude, V1:Vm=1:Π(Ni+1) where i=1 to m−1, Vm is the voltage magnitude of one single voltage cell of the mth voltage module, Ni is the total number of voltage cells in the ith voltage module, Π is a mathematical multiplication operator; in each voltage module a number of switches controllable to connect a selected number of voltage cells in series to the two terminals of the voltage module; a control module for controlling said switches.