Digital circuit for control of gradual turn on of electrical...

Details Digital circuit for control of gradual turn on of electrical... Digital circuit for control of gradual turn on of electrical...

A - Human Necessities

61

N

326/1

A61N 1/36 (2006.01) A61N 1/08 (2006.01) A61N 1/378 (2006.01)

Patent

CA 1204475

ABSTRACT OF THE DISCLOSURE A circuit for causing the gradual turn-on of electrical tissue stimulation in a digitally controlled stimulator is disclosed. A stimulation pulse counter and a pulses per step memory circuit are connected to a decoder to provide an amplitude incrementing signal after a presettable count of stimulation pulses. An amplitude counter receives the incrementing signal to increment the amplitude of the stimulation output pulse through a digital to analog converter circuit and to reset the pulse counter. A maximum amplitude memory circuit and decoder operate in conjunction with the amplitude counter to latch the counter when a preset pulse amplitude is obtained. At the end of a stimulation interval, the amplitude counter is reset and stimulation pulses begin at the minimum amplitude at the start of the next stimulation interval.

427037

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