Abstract: A method of treating a wound or preventing injury to a region susceptible to injury comprising the steps of placing a pair of electrodes placed spaced apart in the region of a wound and applying a predetermined sequence of current waveforms across the electrodes. The sequence of current waveforms comprises a first waveform comprising a series of current pulses having an amplitude in a range of from 80 to 300 ?A, having a frequency in a range from 0.5 to 1.5 pulses per second and a pulse width in a range from 333 to 1000 ms, a second waveform comprising a series of current pulses having an amplitude in a range of from 20 to 60 ?A, having a frequency in a range from 2 to 4 pulses per second and a pulse width in a range from 125 to 250 ms and a third waveform comprising a series of current pulses having an amplitude in a range of from 250 to 640 ?A, having a frequency in a range of from 80 to 120 pulses per second and a pulse width in a range from 4 to 6 ms.

Abstract: A starter motor control circuit for an engine includes an input circuit which is controlled by the ignition contact breaker of the engine, the capacitor charging each time the contact breaker opens and discharging relatively slowly when it is closed. The capacitor is connected by a complementary emitter follower transistor pair to a level detector circuit which produces an output when the voltage on the capacitor is between predetermined limits. At below a predetermined speed this output is a train of constant length pulses which control charging and discharging of a further capacitor. When the voltage on the capacitor is less than a predetermined minimum a regenerative switching circuit is operated to cut out the starter circuit. A feedback transistor maintains the capacitor discharged until the engine stops.