Rapid slewing filter

Details Rapid slewing filter Rapid slewing filter

1985-09-06

1988-04-19

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307543, 307547, 307549, 307552, 328165, 328167, 330 9, 330109, H03F 102, H03K 1756, H03B 100

Patent

active

047391898

ABSTRACT:
A multiplexer samples multiple analog waveform signals to provide a sequence of input signals to an active low-pass filter. The bandwidth of the filter is determined by an input RC network having series resistance and shunt capacitance elements. As the multiplexer switches state to sample a different analog signal, the resistance elements of the filter are temporarily shorted to allow the filter input signal to rapidly charge or discharge the shunt capacitance element to a steady state voltage in response to any change in input signal voltage. The resistance elements are then unshorted to permit normal low-pass filter operation. Switch means are also provided to selectively disconnect the shunt capacitance element from the network when the resistance elements are shunted, thereby selectively widening the bandwidth of the filter to pass higher frequency input signals.

REFERENCES:
patent: 3389346 (1968-06-01), Webb
patent: 3668538 (1972-06-01), Hearn

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