METHOD AND APPARATUS FOR LOW POWER, REGULATED OUTPUT IN BATTERY POWERED ELECTROTHERAPY DEVICES

摘要

This invention is a device for controlling the discharge of a battery (B1) supplying an intermittent load, such as a nerve stimulation device. The device includes a controller (15) which operates a switched inductor (L1) to feed a capacitor (C1) with numerous small pulses from the battery, thereby building up the charge, voltage on the capacitor, and occasionally discharging the capacitor to a load. The capacitor discharge is at a current higher than that of the small pulses from the battery, so the battery is drained at small instantaneous discharge rates compared to the high instantaneous discharge current from the capacitor.