1. The oscillator output was fed into two parallel resonant filter circuits . 2. Above is the ITU-R 468 Weighting Filter Circuit Diagram. 3. These were achieved at the cost of an increase in filter circuit complexity. 4. The damping of filter circuits is adjusted to result in the required bandwidth. 5. Filter design characterises filter circuits primarily by their transfer function rather than their topology. 6. There are many different types of filter circuits , with different responses to changing frequency. 7. Consider, for instance, the biquad filter circuit with ideal op amps, shown below. 8. His work on " Filter circuits " was completed in 1931 while still in the US. 9. Amplifiers for such performance applications typically retain tone and filter circuits that have largely disappeared from modern hi-fi products. 10. In addition, AC capacitors are used in low-detuned or close-tuned filter circuits for filtering or absorbing harmonics.
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