Electronic pain control system

Surgery – Truss – Pad

Patent

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128 21P, A61N 136

Patent

active

041023471

ABSTRACT:
A constant current supply circuit including a changeable-level compliance voltage source whose output voltage is automatically reduced whenever the impedance of a load connected to the circuit exceeds a predetermined value. A sampling resistor is provided in the path for load current, and this resistor, with load current flowing, develops a related voltage whose level is employed directly to affect the operating level of the compliance voltage source.

REFERENCES:
patent: 3489152 (1970-01-01), Barbara
patent: 3521641 (1970-07-01), Farensbach
patent: 3797500 (1974-03-01), Porter
patent: 3835833 (1974-09-01), Limoge

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