Spirometer counter circuit
AssigneeDHD Healthcare Corporation
InventorsJames C. Wickstead, Brian Forbes, Michael J. Keating
Life of this patent
Estimating the term…
Abstract
A single switch is utilized within a common ground line to control the current flow through a plurality of loads, whereby power to all of these loads may be interrupted by opening the system ground return so that power can be supplied to a particular component of the circuit, a microprocessor, to the exclusion of all remaining components by the operation of a single switch.
Claims10
An electrical circuit for a circuit controller operable in a first mode to power said circuit controller and a plurality of supporting devices, operable in a second mode to conserve power by terminating the current supplied to all supporting devices while maintaining current to the circuit controller, comprising:
- a source of electrical power for supplying an operating current to a circuit controller and a plurality of circuit controller and supporting devices;
- a circuit controller coupled to said source of electrical power and operable in response thereto in a first mode to complete a circuit to a plurality of circuit controller supporting devices;
- a plurality of circuit controller supporting devices coupled to said source of power and said circuit controller;
- said plurality of circuit controller supporting devices coupled to a common ground through said circuit controller;
- and
- said circuit controller including a switch coupled to said common ground and operable in a second mode for opening said common ground to terminate the current supplied to said plurality of circuit controller supporting devices while maintaining the current supplied to said circuit controller, thereby reducing the current drawn from said power supply when operating in said second mode.
An electrical circuit for a goal-recording counter for recording the occurrence of a predetermined event and operable in a first mode by a circuit controller to determine the occurrence of a predetermined event and to display a presentation of the occurrence, and operable in a second mode to conserve power by terminating the current supplied to all devices supporting the circuit controller while maintaining current to the circuit controller, comprising:
- a source of electrical power for supplying an operating current to a circuit controller and supporting devices;
- a circuit controller coupled to said source of electrical power and operable in response thereto;
- a plurality of circuit controller supporting devices coupled to said source of power and said circuit controller operable in a first mode for determining the occurrence of a predetermined event and to display a presentation of said occurrence;
- said plurality of circuit controller supporting devices coupled to a common ground through said circuit controller, and
- said circuit controller including a switch coupled to said common ground and operable in a second mode for opening said common ground to terminate the current supplied to said plurality of circuit controller supporting devices while maintaining the current supplied to said circuit controller thereby reducing the current drawn from said power supply when operating in said second mode.
Dependencies are inferred from the claim text.