Electronic apparatus for biological research electronicappara00dona Year: 1958 RESISTANCE AND CAPACITANCE IN SERIES therefore the phase shift is tan~^ IjcoCR. Similarly, for the low-pass filter, we had • • J J Fout CR Kout ojCR ,^^coCr) (d^C^R^ ^[ojCrJ therefore the phase shift is 1 coCR tan-i — —I— ^ tan-i —coCR iJOR^ {Graph 10) Loaded R-C high-pass filter If a load be connected to a simple resistance-capacitance high-pass filter {Figure ) we have a new effective resistance-capacitance product R'C, c Figure where R' = Rj^R/iR^^ -f R). Thus, the effect on the transmission charact

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Electronic apparatus for biological research electronicappara00dona Year: 1958 RESISTANCE AND CAPACITANCE IN SERIES therefore the phase shift is tan~^ IjcoCR. Similarly, for the low-pass filter, we had • • J J Fout CR Kout ojCR ,^^coCr) (d^C^R^ ^[ojCrJ therefore the phase shift is 1 coCR tan-i — —I— ^ tan-i —coCR iJOR^ {Graph 10) Loaded R-C high-pass filter If a load be connected to a simple resistance-capacitance high-pass filter {Figure ) we have a new effective resistance-capacitance product R'C, c Figure where R' = Rj^R/iR^^ -f R). Thus, the effect on the transmission character- istic of the connection of the load is to move the curve bodily to the right, to a new turn-over frequency, higher than the old one by the factor R + Rl Rl Loaded R-C low-pass filter If a load be connected to a simple low-pass filter {Figure ), applying R AAW- c 1 \ _L__r Figure Thevenin's theorem at the capacitance terminals, the open-circuit is Kini?i/(i? + Rj), the resistance looking in at the capacitance terminals is RRJ{R + Rj)

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