Boots – shoes – and leggings
Patent
1980-06-25
1982-06-01
Ruggiero, Joseph F.
Boots, shoes, and leggings
333214, G06G 762, H03H 1100
Patent
active
043331572
ABSTRACT:
This simulation circuit is a one-port network having a pair of nodes connected to inputs of first and second voltage followers that have associated switched capacitors alternately connected across them for being discharged and connected to an integrator for being charged to the output voltage on the latter. A third switched capacitor is alternately connected in series with the voltage follower outputs for sensing the input voltage applied to the nodes, and connected to the integrator where the input voltage is integrated and transferred to the first and second switched capacitors. A floating inductance L=T.sup.2 C4/C1C3 is simulated across the nodes, where T is the reciprocal of the switching frequency, C1, C2 and C3 are the capacitances of associated switched capacitors, C1=C2, C4 is the capacitance in the integrator, and the circuit is characterized by the LDI transformation.
REFERENCES:
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patent: 3886469 (1975-05-01), Rollet et al.
patent: 3936777 (1976-02-01), Rollet et al.
patent: 4168440 (1979-09-01), Gray
Hosticka et al.,-"Switched-Capacitor Simulation of Grounded Inductors and Gyrators"-Electronics Letters-Nov. 23, 1978-pp. 788-790.
Fettweis-"Basic Principles of Switched-Capacitor Filters Using Voltage Inverter Switches"-Arch. Electron. & Ubertragungstech-1979, vol. 33, pp. 13-19.
Viswanathan et al.-"Switched-Capacitor Transconductance Elements and Gyrators"-Electronics Letters-May 24, 1979, vol. 15, No. 11-pp. 318-319.
Lee-"Switched-Capacitor Filters Using Floating-Inductance Simulation Circuits"-Electronics Letters-Sep. 27, 1979, vol. 15, No. 20-pp. 644-645.
Temes et al.-"Switched-Capacitor Circuits Bilinearly Equivalent to Floating Inductor or F.D.N.R."-Electronics Letters-Feb. 1, 1979, vol. 15, No. 3-pp. 87, 88.
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Cannon Russell A.
GTE Automatic Electric Laboratories Inc.
Ruggiero Joseph F.
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