Short-wave transmitter harmonic filtering unit state prediction device and method
A short-wave transmitter and harmonic filtering technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problems affecting the availability of equipment, the burning of harmonic filtering units, and the inability of short-wave transmitters to work. Simple circuit and state prediction procedures, accurate state prediction results, and the effect of improving the failure detection rate
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[0046] The state prediction device of the harmonic filter unit of the short-wave transmitter of the present invention, the principle block diagram is as follows figure 1 As shown, the shortwave transmitter control module and harmonic filter unit are inherent hardware of the shortwave transmitter
[0047] The detection circuit designed by the present invention is as figure 2 As shown, the shortwave operating frequency range is 2MHz to 29.9999MHz, and the harmonic filter unit is mainly used to filter out the harmonics of the operating frequency point. Table 1 is divided into 6 bands.
[0048] Table 1 Band-Frequency Relationship Table
[0049] band number Frequency (MHz) 1 2.0000~3.1408 2 3.1409~4.1325 3 4.1326~7.7459 4 7.7460~12.1642 5 12.1643~19.1027 6 19.1028~29.9999
[0050] When the working frequency falls on band 1 (the initial state of the shortwave transmitter is generally band 1), the controller of the shortwave transmitt...
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