Method and arrangement for suppressing noise signals in a load s

Details Method and arrangement for suppressing noise signals in a load s Method and arrangement for suppressing noise signals in a load s

1989-10-13

1990-11-06

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323280, 363 89, G05F 146, G05F 156, H03F 358

Patent

active

049689282

ABSTRACT:
A method and arrangement for suppressing noise having an alternating voltage component in a load supplied with a direct voltage signal by way of a control loop including a final controller connected to the load. The final controller is connected to the load by way of only an ohmic resistor. The signal at the output of the final controller contains an alternating voltage component of the noise. A signal proportional to the alternating voltage component of the noise in the load is formed in a branch circuit separate from the control loop supplying the load. The proportional signal is fed in phase opposition to the signal appearing at the output of the final controller ahead of the ohmic resistor with an amplitude corresponding to the amplitude of the alternating voltage component of the noise dropped across the ohmic resistor.

REFERENCES:
patent: 3916294 (1975-10-01), Kennedy
patent: 3939399 (1976-02-01), Funatsu et al.
patent: 4327319 (1982-04-01), Swisher et al.
patent: 4644254 (1987-02-01), Panse
Article from German Periodical Funk-Technik, [Radio Technology] Entitled "Schaltungs-Technik Moderner Netzgerate" vol. 37, No. 9, (1982), pp. 385-388.
Publication-Electronics, Article entitled "Linear Controller Attenuates Switching-Supply Ripple", by Christopher S. Tocci Oct. 6, 1982, pp. 110-111.
French Publication Revue de Physique Appliquee, Entitled "Improvement of the Ripple of a High Voltage Power Supply for a Field Emission Gun", by M. Troyon, E. Merienne, vol. 9, No. 3, pp. 533-537 (May 1974).

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