GB1474440A - Preionizer for a spark gap - Google Patents

Preionizer for a spark gap

Info

Publication number
GB1474440A
GB1474440A GB2994674A GB2994674A GB1474440A GB 1474440 A GB1474440 A GB 1474440A GB 2994674 A GB2994674 A GB 2994674A GB 2994674 A GB2994674 A GB 2994674A GB 1474440 A GB1474440 A GB 1474440A
Authority
GB
United Kingdom
Prior art keywords
gap
main
preioniser
condenser
spark
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
GB2994674A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1474440A publication Critical patent/GB1474440A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T2/00—Spark gaps comprising auxiliary triggering means
    • H01T2/02—Spark gaps comprising auxiliary triggering means comprising a trigger electrode or an auxiliary spark gap

Landscapes

  • Emergency Protection Circuit Devices (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Thermistors And Varistors (AREA)

Abstract

1474440 Spark gaps GENERAL ELECTRIC CO 5 July 1974 [5 July 1973] 29946/74 Headings H1X and H1D A main spark gap is ionised ready for a discharge by a preioniser comprising a condenser and a photon emitter which are connected in series between the main gap electrodes. The condenser, Figs. 1a, 1b, consists of plates 22a, 24 on opposited sides of an insulating layer 12, connected to strips 22, 28 respectively, deposited on layer 12. Strip 28 is resistive and connected to strip 20, which has a portion forming a gap 26 with plate 24. The schematic connections of the preioniser 10, connected across the electrodes 32, 34 of main spark gap 30, are shown in Fig. 2. When an overvoltage impulse arrives, it includes a high frequency component to which the condenser offers little impedance, so that the main voltage appears across resistance 28 and gap 26. Gap 26 breaks down before the main gap 30, so that photons emitted by gap 26 ionise gap 30 which is ready to conduct as soon as the voltage across it reaches the break-down voltage. It is thus assured that gap 30 will properly protect the apparatus connected thereto. The main gap and preioniser may be assembled on a disc (Figs. 3a, 3b, not shown), and the discs may be piled to form a spark gap arrestor.
GB2994674A 1973-07-05 1974-07-05 Preionizer for a spark gap Expired GB1474440A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00376433A US3845345A (en) 1973-07-05 1973-07-05 Frequency sensitive preionizer

Publications (1)

Publication Number Publication Date
GB1474440A true GB1474440A (en) 1977-05-25

Family

ID=23485016

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2994674A Expired GB1474440A (en) 1973-07-05 1974-07-05 Preionizer for a spark gap

Country Status (7)

Country Link
US (1) US3845345A (en)
JP (1) JPS5033445A (en)
CH (1) CH578269A5 (en)
DE (1) DE2431401A1 (en)
FR (1) FR2236293A1 (en)
GB (1) GB1474440A (en)
SE (1) SE398027B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443590A1 (en) * 1978-12-07 1980-07-04 Halilovic Esref HIGH VOLTAGE PULSE GENERATOR WITH PHOTO ACTION IONIZATION FOR IGNITION CIRCUIT OF CARBURETOR ENGINES
GB2200243A (en) * 1987-01-27 1988-07-27 English Electric Valve Co Ltd Overvoltage protection device
GB2224884A (en) * 1988-11-10 1990-05-16 Cooper Uk Limited Surge arresters

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1115469B (en) * 1977-05-06 1986-02-03 Sits Soc It Telecom Siemens FIELD-EFFECT DEVICE FOR OVERVOLTAGE PROTECTION
JPS6024540U (en) * 1983-07-28 1985-02-19 印刷機械貿易株式会社 Printing press plate with display to facilitate manual control of ink supply amount
US5097231A (en) * 1990-05-16 1992-03-17 Varian Associates, Inc. Quasi-passive, non-radioactive receiver protector device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087093A (en) * 1959-05-13 1963-04-23 Mallory & Co Inc P R Capacitor protection
US3223874A (en) * 1963-12-13 1965-12-14 Gen Electric Preionizer for use in overvoltage protective devices
US3259780A (en) * 1964-07-06 1966-07-05 Gen Electric Electric gap device using porous material in the arc chamber
US3489949A (en) * 1967-11-13 1970-01-13 Gen Electric Lightning arrester with main and preionizing gaps

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443590A1 (en) * 1978-12-07 1980-07-04 Halilovic Esref HIGH VOLTAGE PULSE GENERATOR WITH PHOTO ACTION IONIZATION FOR IGNITION CIRCUIT OF CARBURETOR ENGINES
GB2200243A (en) * 1987-01-27 1988-07-27 English Electric Valve Co Ltd Overvoltage protection device
GB2200243B (en) * 1987-01-27 1990-09-05 English Electric Valve Co Ltd Protection device
GB2224884A (en) * 1988-11-10 1990-05-16 Cooper Uk Limited Surge arresters

Also Published As

Publication number Publication date
CH578269A5 (en) 1976-07-30
FR2236293A1 (en) 1975-01-31
JPS5033445A (en) 1975-03-31
SE7408817L (en) 1975-01-07
DE2431401A1 (en) 1975-01-30
SE398027B (en) 1977-11-28
US3845345A (en) 1974-10-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee