Device for detecting the malfunctioning of a load such as a magnetron
First Claim
1. Device for detecting the malfunctioning of a magnetron which operates at start-up with a high power setting P0, and which is connected to the terminals (21, 22) of the secondary winding (19) of a high-voltage transformer (8), forming part of an electric supply circuit for said magnetron, said device comprising a means for measuring (28) peak voltage values sampled in said supply circuit, during operation of said magnetron said measurement means being connected to the secondary-winding terminals of the high-voltage transformer (8), a means for storing (29) said voltage values measured at successive instants, a means for comparing (30) two successive voltage values generating, in the event of a difference in value, an excess signal (a-b), and a means for detecting (31) the excess signal and for sending a malfunction signal to a counting means in order to determine the frequency of said malfunction.
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Accused Products
Abstract
A device for detecting the malfunctioning of a magnetron which operates at start-up with a high power setting P0, and which is connected to the terminals (21, 22) of the secondary winding (19) of a high-voltage transformer (8). This device includes a device for measuring (28) the peak voltage value sampled in the supply circuit, a device for storing (29) the voltage value measured at successive instants, a device for comparing (30) two successive voltage values giving, in the event of a difference in value, an excess signal (a-b), and a device for detecting (31) the excess signal suitable for sending a malfunction signal to a counting device in order to determine the frequency of the malfunction.
67 Citations
6 Claims
- 1. Device for detecting the malfunctioning of a magnetron which operates at start-up with a high power setting P0, and which is connected to the terminals (21, 22) of the secondary winding (19) of a high-voltage transformer (8), forming part of an electric supply circuit for said magnetron, said device comprising a means for measuring (28) peak voltage values sampled in said supply circuit, during operation of said magnetron said measurement means being connected to the secondary-winding terminals of the high-voltage transformer (8), a means for storing (29) said voltage values measured at successive instants, a means for comparing (30) two successive voltage values generating, in the event of a difference in value, an excess signal (a-b), and a means for detecting (31) the excess signal and for sending a malfunction signal to a counting means in order to determine the frequency of said malfunction.
Specification