Apparatus and method for controlling DC power to primary and secondary load utilizing capacitor
AssigneeLucas Industries Limited
InventorsDavid R Trainer, Anthony P O'Carrol, Paul A Kendall
Life of this patent
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Abstract
An apparatus for supplying and controlling electrical power having a power source for supplying electrical power to a primary load and a secondary load, a capacitor connected to an input to the secondary load and control means operable to cause an operating condition of the apparatus to temporarily change from, a operating condition in which power from the power source is supplied to the primary and secondary loads to an alternative operating condition in which power from the power source is supplied to the primary load but is supplied to the secondary load thereby increasing the minimum voltage the capacitor can maintain at the input to the secondary load.
Claims19
An apparatus for supplying and controlling electrical power, comprising:
- a power source for supplying DC electrical power to a primary load and a secondary load;
- a capacitor connected to a power input of the secondary load;
- a device connected between the power source and the capacitor for preventing current flowing from the power input of the secondary load to the power source;
- and
- control means operable to cause an operating condition of the apparatus to temporarily change from
- a primary operating condition in which power from the power source is supplied to the primary and secondary loads to
- an alternative operating condition in which power from the power source is not supplied to the primary load but is supplied to the secondary load,
- thereby increasing the minimum voltage the capacitor can maintain at the power input to the secondary load.
A method of supplying and controlling electrical power from a DC power source to a primary load and to a secondary load which has a capacitor connected to a power input thereof and a device connected between the power source and the capacitor for preventing current flowing from the power input of the second load to the power source, the method comprising the step of temporarily interrupting the supply of power from the power source to the primary load, thereby increasing the minimum voltage the capacitor can maintain at the power input to the secondary load.
Dependencies are inferred from the claim text.