GB553227A - Improvements in or relating to electrical systems for converting direct current into alternating current - Google Patents

Improvements in or relating to electrical systems for converting direct current into alternating current

Info

Publication number
GB553227A
GB553227A GB687442A GB687442A GB553227A GB 553227 A GB553227 A GB 553227A GB 687442 A GB687442 A GB 687442A GB 687442 A GB687442 A GB 687442A GB 553227 A GB553227 A GB 553227A
Authority
GB
United Kingdom
Prior art keywords
contact
way
contacts
converting
circuit
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
GB687442A
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.)
ELECTRONIC LAB Inc
Original Assignee
ELECTRONIC LAB Inc
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 ELECTRONIC LAB Inc filed Critical ELECTRONIC LAB Inc
Priority to GB687442A priority Critical patent/GB553227A/en
Publication of GB553227A publication Critical patent/GB553227A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Rectifiers (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

553,227. Converting. STEVENS, A. H. (Electronic Laboratories, Inc.). May 20, 1942, No. 6874. [Class 38 (ii)] In a system for converting D.C. from a source 19, 20 into A.C. in a load circuit 18 by means of a self-interrupter 21 with opposed contacts 22, 23 through which the source 19, 20 is alternately connected to the two halves of a centrallytapped primary of a transformer 10, the secondary of which supplies the load current, a capacitor 28 is connected across the contacts 22, 23 and the transformer core has an air gap 53, the arrangement being such as to prevent sparking at the contacts 22, 23. The capacitance 28 is charged one way when the contact 21 engages the contact 22 and the opposite way when the contact 23 is engaged. The condition for no sparking at 22, 23 is that the capacitance circuit should have such a period of oscillation that the capacitor changes from maximum charge one way to maximum charge the other way while the contact 21 is moving from one contact to the other. This is achieved by suitable choice of values of inductance and capacity for the circuit. The air gap in the transformer core ensures that the magnetizing current varies substantially linearly with respect to the voltage.
GB687442A 1942-05-20 1942-05-20 Improvements in or relating to electrical systems for converting direct current into alternating current Expired GB553227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB687442A GB553227A (en) 1942-05-20 1942-05-20 Improvements in or relating to electrical systems for converting direct current into alternating current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB687442A GB553227A (en) 1942-05-20 1942-05-20 Improvements in or relating to electrical systems for converting direct current into alternating current

Publications (1)

Publication Number Publication Date
GB553227A true GB553227A (en) 1943-05-12

Family

ID=9822354

Family Applications (1)

Application Number Title Priority Date Filing Date
GB687442A Expired GB553227A (en) 1942-05-20 1942-05-20 Improvements in or relating to electrical systems for converting direct current into alternating current

Country Status (1)

Country Link
GB (1) GB553227A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519389A (en) * 1948-07-12 1950-08-22 Max J Mayer Seed for production of titanium dioxide and process of making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2519389A (en) * 1948-07-12 1950-08-22 Max J Mayer Seed for production of titanium dioxide and process of making same

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