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Class 307/97 - Condition responsive


Subclass of Class 307 - Electrical transmission or interconnection systems
Definition: Subject matter automatically responsive to a condition.
No. of patents: 19
Last issue date: 12/17/2002


NumberTitleIssue Date
6496346Automatic system shutdown following processor thermal condition
Power to a processor-based system is automatically disabled following a thermal condition detected by the processor. A predetermined thermal condition identified by the processor is coupled to a circuit that causes the power supply to be turned off. The r...
12/17/2002
5896278Non-contact electric power transmission apparatus
A non-contact electric power transmission apparatus including a power supply unit and a load unit. The power supply unit has a first oscillation circuit, a signal secondary winding, a filter circuit, and a driving control circuit. The load unit has a powe...
04/20/1999
5703415Power supply circuit
A power supply circuit is provided with a first battery, a second battery, an output terminal, and a voltage dividing circuit for dividing a voltage from the first battery. An output voltage of the dividing circuit is compared with a voltage of the second...
12/30/1997
5483462On-line method for determining power system transient stability
A fast and reliable method for determining power system transient stability is presented for on-line power system dynamic security assessment. This method is based on the direct (Lyapunov theory) approach controlling the unstable equilibrium point (UEP). ...
01/09/1996
5479056Power source device
A power source device to and from which an interchangeable first device can be attached and detached and operating in such a manner that when the first device is attached and when the first device is judged to be normally operating, electric power is supp...
12/26/1995
5424958Real time resource allocation
The method allocates a demanded amount of power to a plurality of power output apparatus, each power apparatus having characteristic curves associated therewith, and the total power outputted from the plurality of power apparatus results in a minimum cost...
06/13/1995
5404314Real time environmental load allocation
The method allocates a demanded amount of power to a plurality of power output apparatus, each power output apparatus having an emissions curve associated therewith, such that each of the power output apparatus supplies a portion of the demanded power, an...
04/04/1995
5388033Real time load allocation with additional constraints
The method allocates a demanded amount of power to a plurality of power output apparatus, each power output apparatus having characteristic curves associated therewith, such that each of the power output apparatus supplies a portion of the demanded power,...
02/07/1995
4755741Adaptive transistor drive circuit
An adaptive transistor drive circuit including a multiple-emitter transistor, at least one emitter of which is connected to the drive circuit. When the drive current causes the transistor to saturate, the emitter connected to the drive circuit conducts a ...
07/05/1988
4464553Induction heating apparatus with an override circuit
An induction heating apparatus for cooking includes an induction heating coil which generates a high frequency time-varying magnetic field used to heat a metal object; a high frequency inverting circuit which supplies a high frequency AC signal to the hea...
08/07/1984
4349726Control device for electric heating apparatus
The control device has a power regulator for the timed power to the heating system of the electrical apparatus. The heating system is provided with a temperature sensor which, up to a given desired temperature, bridges the power regulator with the aid of ...
09/14/1982
4317049Frequency adaptive, power-energy re-scheduler
A frequency adaptive, power-energy re-scheduler (FAPER) that includes a frequency transducer that notes frequency or frequency deviations of an electrical system and logic means which controls and re-schedules power flow to a load unit in part on the basi...
02/23/1982
4198574Timing control circuit
A timing control circuit for use in automatically and intermittently operating electrical appliances, such as lamps, for security purposes in homes, offices and other buildings. The circuit is adapted to plug into a conventional wall socket and to receive...
04/15/1980
4196356Expanded time constant condition control system
A condition responsive time proportional control means which has a relatively fast time constant when operating in its proportional band has the time constant expanded by means of a digital counter. The counter is repetitively switched by the condition re...
04/01/1980
4172982Time proportional control means with a variable time constant
A condition responsive time proportional control means which has a relatively fast time constant when operating in its proportional band has the time constant expanded by means of a digital counter. The counter is a resettable unidirectional type counter....
10/30/1979
4161028Electric demand control system
There is disclosed a method and means for continuously controlling the consumption of power by an industrial customer wherein the control is accomplished by controlling the generation of the customer's own power source and/or his load in response to a sig...
07/10/1979
4100428Control system for limiting the electrical consumption of a distribution network
The control system permits limiting the electrical demand of a distribution network to a desired maximum value by regulating the temperature of one or more thermal loads with heating or cooling elements; this system includes: means for measuring the insta...
07/11/1978
4083231Self-calibrating leak detector circuit arrangement
The self-calibrating leak detector circuit arrangement comprises a measuring probe for generating an electrical signal when exposed to the leaking gas. A measuring amplifier is connected to the probe for amplifying the electrical signal and a second integ...
04/11/1978
4051391Current-operated circuits and structures
Current-mode OR gates useful, for example, in telephone cross-point switch systems. A current-mode OR gate withdraws an output current of predetermined level at its output terminal whenever an input current of sufficient level is applied to one or more of...
09/27/1977
 
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