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A microwave oven adapted for use within a motor vehicle dashboard area. The microwave oven has a removable storage cassette, and slidable platforms for securing and serving containers of beverages and foods.

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Class 324/603 - For excitation


Subclass of Class 324 - Electricity: measuring and testing
Definition: Subject matter wherein the auxiliary means generates a stimulus
No. of patents: 106
Last issue date: 07/07/2009


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NumberTitleIssue Date
4547724Method and apparatus for detection of non-linear electrical devices
The present invention provides a system for applying a fixed level D.C. voltage and a square wave signal sequentially to a voltage divider including a resistor of a known impedance and the device under test. The square wave ranges from a value which is su...
10/15/1985
4546318Method for regulating current flow through core samples
A method and system for regulating current flow through a core sample from a subterranean formation being tested for electrical impedance, including a variable-frequency current source, means for passing such current through the core sample, means for mea...
10/08/1985
4472676Leakage impedance measuring system including a superimposed measuring voltage having a frequency differing slightly from system frequency
A process and an apparatus for the determination of the total leakage impedance and the maximum conductor contact current of an ungrounded AC power supply system resulting from the total leakage impedance. An AC measurement current having a frequency that...
09/18/1984
4458196Method and apparatus for high speed resistance, inductance and capacitance measurement
A method of, and an apparatus for, high speed resistance (R), inductance (L) and capacitance (C) measurement is disclosed. A voltage or current based excitation signal having a very low voltage level and a predetermined waveform is applied to the item who...
07/03/1984
4419628Transient-noise simulators
A noise simulator including a reflection absorbing circuit connected between a high-frequency noise pulse generator based on the principle of a charged delay line and a DC capacitor connected to the power line of the equipment under test. The reflection a...
12/06/1983
4417207Circuit for injecting simulating-noise signals in a power line
A simulated-noise signal is injected in the power line of equipment under test without loss of AC power by the use of a series resonance circuit having a resonance frequency equal to the frequency of the AC power supply. The series resonance circuit is co...
11/22/1983
4408282AC Resistance measuring instrument
An auto-ranging AC resistance measuring instrument for remote measurement of the resistance of an electrical device or circuit connected to the instrument includes a signal generator which generates an AC excitation signal for application to a load, inclu...
10/04/1983
4349777Variable current source
A plurality of metal resistance elements and a metal resistance element for compensation use are formed on a common substrate and placed under the same temperature condition. A reference current is applied to the metal resistance element for compensation ...
09/14/1982
4283675Impedance/admittance measuring circuit
An impedance/admittance measuring circuit generates an output signal which is representative of the real or imaginary part of the impedance or admittance of a connected load. An excitation signal comprising a square wave having a fixed magnitude is genera...
08/11/1981
4224483Electronic loaded/nonloaded telephone loop identification circuit
An electronic loop identification circuit identifies loaded and nonloaded customer telephone loops. The loops can then be segregated to allow separate balance networks to be used for hybrid circuits which connect the customer loops to a digital switching ...
09/23/1980
4213085Phase inversion test device
A device for testing phase inversion of a circuit includes a signal generator having an assymetrically shaped positive phased test signal output electrically connected through a buffer circuit to the input of the circuit under test. A differentiator circu...
07/15/1980
4208624Method and apparatus for investigating dielectric semiconductor materials
A method and apparatus are disclosed for determining electrical properties of dielectric and semiconducting materials and devices by admittance measurement. According to the disclosed method, a sample contained between electrodes is subjected to an essent...
06/17/1980
4198598Swept frequency circuit for precision gain or loss measurements
A swept frequency circuit for use with several detectors and an oscilloscope is described, the output of which is controlled remotely by an electronic attenuator. A closed feedback loop is formed by a detector rectifying the swept output frequency as it i...
04/15/1980
4130795Versatile LDV burst simulator
A device for generating burst signals that can be used to determine whether or not a laser doppler velocimeter is operating properly. A high frequency signal which corresponds to the information frequency of the laser doppler velocimeter is modulated by a...
12/19/1978
4123703Microwave method of and apparatus for flaw detection
A microwave flaw detector system and method are disclosed which include the use of a pair of parallel strip transmission lines which are located a parallel spaced distance from the surface of the test, or work, piece. The strip transmission lines are capa...
10/31/1978
4093915Capacitance measuring system
A system for generating a signal linearly related to the capacitive reactance of a sensor capacitor. The system includes an oscillator for providing an oscillatory signal characterized by a peak-to-peak voltage proportional to an applied control signal, a...
06/06/1978
4090142Automatic frequency response plotting system
An automatic frequency response plotting system includes control circuitry for controlling the sweep rate during the plotting operation as a function of rapid changes in the amplitude of the output of the device under test. The control circuitry senses th...
05/16/1978
4087658Apparatus and method for determining frequencies for system maximum and minimum immittances
A signal is produced which is representative of the absolute value of the impedance of admittance (i.e., immittance) of a circuit as a function of frequency. At the same time, the frequencies are identified for the local maximum and minimum values of this...
05/02/1978
4074184Nonconductive vapor/solid or liquid fraction determination
The relative amounts of liquid phase versus vapor phase of a mixed phase nonconductive fluid such as oil or fuel; or the relative amounts of solids versus gas of a mixed flow of nonconductive particles and gas such as pneumatically conveyed plastic pellet...
02/14/1978
4039945Device for measuring and checking parameters of electric circuit elements
A device for measuring and checking parameters of elements of electric circuits having at least three elements forming a closed loop, comprising a testing signal source whose output is intended to be connected to a first lead of a first element being chec...
08/02/1977
4028507Apparatus for applying particular voltages to three-terminal circuits and measuring resulting current flows for the purpose of determining circuit characteristics
Apparatus which may be used in the performance of at least six tests on a telephone subscriber's line is disclosed. The apparatus operates to force the tip and ring leads of a line to particular potential levels and then produces output voltages related t...
06/07/1977
4023095Circuit for measuring the sensitivity of a cardiac pacer
A circuit for measuring the sensitivity of a cardiac pacer includes a generator for producing a signal which varies as a function of the sine2 of a predetermined frequency. The signal is generated by an intermediate step of generating a wavefor...
05/10/1977
4023098Noise burst source for transfer function testing
A method and apparatus for accurately measuring the transfer function of a linear system or the linear part of a non-linear system. This is accomplished by using a spectrum estimation technique which utilizes a "transient random" stimulus consisting of a ...
05/10/1977
4004218Device for displaying analog signals on a raster scanning display
Television or other raster display system for displaying the waveform of a time-varying input signal. The scanlines of the raster scan-line pattern are traced on the display screen in a direction orthogonal to the direction of movement of the waveform. Th...
01/18/1977
3988667Noise source for transfer function testing
A method and apparatus for obtaining an accurate measure of a transfer function of either a linear or the linear part of a nonlinear system. This is accomplished by utilizing an estimation technique using a "periodic-random" stimulus consisting of a rando...
10/26/1976
3978282Apparatus and method for measuring the transmission characteristics of a network
A substantially non-interfering, low-intensity sweeping test signal is transmitted along a network to be tested. Means are provided for receiving and tracking the test signal at the opposite end of the network. A reference signal is transmitted along with...
08/31/1976
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