Electric control circuit

Electricity: motive power systems – Positional servo systems – Digital or numerical systems

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Details

3 11, G05B 1928, A61F 100

Patent

active

040877302

ABSTRACT:
At least one comparator circuit and one timing circuit are provided so that the operation of a control element in response to the tensing of the muscles of a patient depends upon the time duration during which the patient tenses the muscle. Further timing and comparator circuits may be provided so that the rate at which the patient tenses the muscles can also influence the operation of the output control element. A reset circuit resets the timing and comparator circuits in response to alternate muscle tensings, allowing the patient free choice of any available operating condition independent of the previous operating condition.

REFERENCES:
patent: 3820168 (1974-06-01), Horvath
"The Use of Myselectric Currents", Battye, et al, Journal of Joint and Bone Surgery, vol. 37-B, No. 3,pp. 506-510, 1955.
"A Three-State Myo-Electric Control," Dorcas et al., Med. and biol. Engng., vol. 4, pp. 367-370, Jul. 1966.
"Electro-Control: an Eng--Controlled A/K Prosthesis," Horn, Med. and biol. Engng., vol. 10, pp. 61-77, 1972.

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