GB1190374A - Interference Suppressors for Electrical Equipment - Google Patents

Interference Suppressors for Electrical Equipment

Info

Publication number
GB1190374A
GB1190374A GB29100/66A GB2910066A GB1190374A GB 1190374 A GB1190374 A GB 1190374A GB 29100/66 A GB29100/66 A GB 29100/66A GB 2910066 A GB2910066 A GB 2910066A GB 1190374 A GB1190374 A GB 1190374A
Authority
GB
United Kingdom
Prior art keywords
filter
resistance
network
characteristic impedance
inductances
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB29100/66A
Inventor
Clement Arthur Meadows
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB29100/66A priority Critical patent/GB1190374A/en
Priority to DE19671541951 priority patent/DE1541951A1/en
Priority to SE9489/67*A priority patent/SE325064B/xx
Priority to FR112253A priority patent/FR1530014A/en
Publication of GB1190374A publication Critical patent/GB1190374A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G4/00—Fixed capacitors; Processes of their manufacture
    • H01G4/40—Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H1/00—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network
    • H03H1/0007—Constructional details of impedance networks whose electrical mode of operation is not specified or applicable to more than one type of network of radio frequency interference filters

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Filters And Equalizers (AREA)

Abstract

1,190,374. Filter networks. NATIONAL RESEARCH DEVELOPMENT CORP. 21 June, 1967 [29 June, 1966], No. 29100/66. Heading H3U. An interference suppressor in the form of a low-pass filter network has a dissipative end section connected at one end of the network, the end section including an inductive series impedance having a conductance of the same order of magnitude as the reciprocal of the characteristic impedance of the network. As shown in Fig. 1 a T-section low-pass filter L, L, 2C has one of its inductances L shunted by a resistance R equal to the characteristic impedance #L/C. The resistance R is situated at that end of the filter remote from the noise source. In a ladder-type filter, Fig. 3, in which a noise source may be at either end each of the inductances L/2 is shunted by a resistance R where R = #L/C. A number of filters as in Fig. 1 may be connected in tandem (Fig. 2, not shown), the several filter sections having the same characteristic impedance but different cutoff frequencies to form a tapered filter. A structural embodiment of Fig. 1 is described with reference to Fig. 4 (not shown) in which two inductors, a resistor and a capacitor are mounted together to form a unitary structure. Instead of providing a separate resistor component one of the inductors possesses a substantial inherent shunt conductance.
GB29100/66A 1966-06-29 1966-06-29 Interference Suppressors for Electrical Equipment Expired GB1190374A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB29100/66A GB1190374A (en) 1966-06-29 1966-06-29 Interference Suppressors for Electrical Equipment
DE19671541951 DE1541951A1 (en) 1966-06-29 1967-06-27 Locking circuit for electrical equipment
SE9489/67*A SE325064B (en) 1966-06-29 1967-06-28
FR112253A FR1530014A (en) 1966-06-29 1967-06-28 Devices for suppressing or attenuating interference and transient phenomena in electrical conductors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29100/66A GB1190374A (en) 1966-06-29 1966-06-29 Interference Suppressors for Electrical Equipment

Publications (1)

Publication Number Publication Date
GB1190374A true GB1190374A (en) 1970-05-06

Family

ID=10286147

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29100/66A Expired GB1190374A (en) 1966-06-29 1966-06-29 Interference Suppressors for Electrical Equipment

Country Status (4)

Country Link
DE (1) DE1541951A1 (en)
FR (1) FR1530014A (en)
GB (1) GB1190374A (en)
SE (1) SE325064B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019437A1 (en) * 1979-05-11 1980-11-26 Rca Corporation Radio frequency interference suppression apparatus
DE3731394A1 (en) * 1987-09-18 1989-03-30 Euchner & Co HIGH-FREQUENCY INTERFERENCE FILTERS FOR CIRCUITS TO BE CONNECTED TO A LINE, IN PARTICULAR FOR TWO-WIRE SENSORS
EP1326331A2 (en) * 2001-12-25 2003-07-09 EMC Inc. Noise filter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0274347A1 (en) * 1986-11-24 1988-07-13 Feller Ag Noise filter for an AC line

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0019437A1 (en) * 1979-05-11 1980-11-26 Rca Corporation Radio frequency interference suppression apparatus
DE3731394A1 (en) * 1987-09-18 1989-03-30 Euchner & Co HIGH-FREQUENCY INTERFERENCE FILTERS FOR CIRCUITS TO BE CONNECTED TO A LINE, IN PARTICULAR FOR TWO-WIRE SENSORS
EP1326331A2 (en) * 2001-12-25 2003-07-09 EMC Inc. Noise filter
EP1326331A3 (en) * 2001-12-25 2004-07-07 EMC Inc. Noise filter
US6801103B2 (en) 2001-12-25 2004-10-05 Emc Inc. Noise filter

Also Published As

Publication number Publication date
SE325064B (en) 1970-06-22
DE1541951A1 (en) 1970-04-16
FR1530014A (en) 1968-06-21

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Legal Events

Date Code Title Description
PS Patent sealed
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee