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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TDA7406T датащи(PDF) 16 Page - STMicroelectronics |
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TDA7406T датащи(HTML) 16 Page - STMicroelectronics |
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16 / 49 page  TDA7406T 16/49 Figure 11. EQ band1, normal- and DC-mode @ boost = 15 dB, fCenter = 62 Hz Note: The center frequency, Q, DC-mode and boost/cut can be set fully independently for each filter. 2.7 Subwoofer Application There is one separate subwoofer output. A low-pass filter stage at this output allows the selection of three dif- ferent frequencies: 80/120/160Hz. A high Pass Filter stage is present in the main path with selectable 90/135/ 180/215Hz frequencies. Both filters, the low-pass as well as the high-pass filter can be disabled and have but- terworth characteristics so that their cutoff frequencies are not equal but shifted by the factor 1.125 to get a flat frequency response (see Figure 12). Figure 12. Subwoofer Application with Lowpass @ 80/120/160Hz and HighPass @ 90/135/180Hz 1 10K 10 1K 100 Hz -1 16 0 14 2 12 4 10 6 8 dB dB Hz -50.0 -40.0 -30.0 -20.0 -10.0 0.0 10.0 100.0 1.0K 10.0K |
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