GB289602A - Improvements in or relating to electro-mechanical devices for the production of alternating or pulsating currents - Google Patents

Improvements in or relating to electro-mechanical devices for the production of alternating or pulsating currents

Info

Publication number
GB289602A
GB289602A GB679927A GB679927A GB289602A GB 289602 A GB289602 A GB 289602A GB 679927 A GB679927 A GB 679927A GB 679927 A GB679927 A GB 679927A GB 289602 A GB289602 A GB 289602A
Authority
GB
United Kingdom
Prior art keywords
alternating
vibrating member
current
electromagnet
contacts
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
GB679927A
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.)
COVENTRY AUTOM TELEPHONES Ltd
Original Assignee
COVENTRY AUTOM TELEPHONES Ltd
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 COVENTRY AUTOM TELEPHONES Ltd filed Critical COVENTRY AUTOM TELEPHONES Ltd
Priority to GB679927A priority Critical patent/GB289602A/en
Publication of GB289602A publication Critical patent/GB289602A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/54—Conversion of dc power input into ac power output without possibility of reversal by dynamic converters
    • H02M7/58—Conversion of dc power input into ac power output without possibility of reversal by dynamic converters using mechanical contact-making and -breaking parts to interrupt a single potential
    • H02M7/62—Conversion of dc power input into ac power output without possibility of reversal by dynamic converters using mechanical contact-making and -breaking parts to interrupt a single potential with electromagnetically-operated vibrating contacts, e.g. chopper

Abstract

289,602. Coventry Automatic Telephones, Ltd., and Collyer, J. E. March 11,1927. Electromagnetic interrupters.-An alternating or pulsating current is obtained from a direct current source by means of a vibrating interrupter, the vibrating member 8 of which is normally maintained under strain, for example by an electromagnet 4, and is released to vibrate at its natural frequency without further energiza.- tion during the period in which current is required. The vibrating member cooperates with contacts 10, 13 to energize the primary winding 18 of a transformer from a battery connected between the mid point of the winding and the vibrating member. The secondary winding 19 may be used for supplying ring- ing current to small telephone exchanges, in which case the electromagnet 4 is controlled by contacts 17 operated periodically by a relay forming part of a relay chain, or by a revolving cam.
GB679927A 1927-03-11 1927-03-11 Improvements in or relating to electro-mechanical devices for the production of alternating or pulsating currents Expired GB289602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB679927A GB289602A (en) 1927-03-11 1927-03-11 Improvements in or relating to electro-mechanical devices for the production of alternating or pulsating currents

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB679927A GB289602A (en) 1927-03-11 1927-03-11 Improvements in or relating to electro-mechanical devices for the production of alternating or pulsating currents

Publications (1)

Publication Number Publication Date
GB289602A true GB289602A (en) 1928-05-03

Family

ID=9820967

Family Applications (1)

Application Number Title Priority Date Filing Date
GB679927A Expired GB289602A (en) 1927-03-11 1927-03-11 Improvements in or relating to electro-mechanical devices for the production of alternating or pulsating currents

Country Status (1)

Country Link
GB (1) GB289602A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757584C (en) * 1938-02-02 1953-03-02 Siemens & Halske A G Mechanical vibrating contact inverter with a vibrating contact spring clamped at one end

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE757584C (en) * 1938-02-02 1953-03-02 Siemens & Halske A G Mechanical vibrating contact inverter with a vibrating contact spring clamped at one end

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