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Letters to the Editor

Single Grounded-Resistor-Controlled Variable Frequency Active RC Notch Filters

& , FIETE
Pages 73-74 | Received 08 Jul 1985, Published online: 02 Jun 2015

REFERENCES

  • R J Harris, The design of an operational amplifier notch filter, Proc IEEE, vol 56, pp 1722–1723, Oct 1968.
  • G R Steber & R J Krueger, A voltage-controlled tunable active null network, ibid, vol 57, pp 233–234, Feb 1969.
  • R M Inigo, A single operational amplifier notch filter, ibid, vol 57, p 727, Apr 1969.
  • S Chakraborty and A K Chaudhary, State-variable realization of votage-controlled notch filters, ibid, vol 57, pp 2068–2069, Nov 1969.
  • B B Bhattacharyya & M N S Swamy, On the realization of an all-pass or a notch filter, ibid, vol 58, pp 603–604, Apr 1970.
  • H F Dienei, Silicon carbide resistor: properties and construction, Bell Lab Ree, vol 34, p 407, 1956.
  • K Nay & A Budak, A voltage-controlled resistance with wide dynamic range and low distortion, IEEE Trans, vol CAS-30, pp 770–772, Oct 1983.
  • V G K Murti, Digital control of a two-terminal resistance, Electron Lett, vol 19, pp 514–515, Jul 1983.

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