US1658647A - Alternating-current rectifier - Google Patents

Alternating-current rectifier Download PDF

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Publication number
US1658647A
US1658647A US183841A US18384127A US1658647A US 1658647 A US1658647 A US 1658647A US 183841 A US183841 A US 183841A US 18384127 A US18384127 A US 18384127A US 1658647 A US1658647 A US 1658647A
Authority
US
United States
Prior art keywords
alternating
layer
graphite
rectifier
current
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 - Lifetime
Application number
US183841A
Other languages
English (en)
Inventor
Levi B Miller
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
Priority to DEI33018D priority Critical patent/DE501227C/de
Priority to NL25926D priority patent/NL25926C/xx
Application filed by General Electric Co filed Critical General Electric Co
Priority to US183841A priority patent/US1658647A/en
Application granted granted Critical
Publication of US1658647A publication Critical patent/US1658647A/en
Priority to FR652876D priority patent/FR652876A/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
    • H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
    • H10D62/80—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials
    • H10D62/83—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge
    • H10D62/832—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge being Group IV materials comprising two or more elements, e.g. SiGe
    • H10D62/8325—Silicon carbide

Definitions

  • My invention relates to alternating cui-
  • Fig. 1 is a cross-section view of a rectifier constructed in accordance with my invention
  • Fig. 2 is a wiring diagram of a rectifying system wherein my invention has been embodied.
  • the rectifier illustrated by Fig. 1 comprises a bolt l provided with nuts 3 and 4 and surrounded by an insulation sleeve 5 uponwhich are supported a plurality of rectifying elements each comprising a layer 6 of silicon carbide and a layer 7 of graphite, carbon or the like.
  • a plurality of rectifying elements each comprising a layer 6 of silicon carbide and a layer 7 of graphite, carbon or the like.
  • they 4 are spaced apart by disks 8 of lead orother soft metal which 1s readily pressed into intimate contact with their surfaces by means of the nuts 3 and 4.
  • Fig. 2 illustrates a system wherein an alternating current circuit 12 and a direct current device 13, such as a storage battery, are interconnected through a transformer 14, a smoothing reactor 15, and a pair of rectiers 16 and 17. With these connections, both halves of the alternating currentwave are rectified and fluctuation in the rectified current is minimized by the reactor 15.
  • the rectifying4 units 6-7 may be produced by subjecting graphite slabs to the vapors formed in a furnace containing fused quartz or other silicious materials such as -a mixture of quartz and carbon particles or a mixture of quartz and silicon carbide.
  • this layer is dependent both on the concentration of the vapors and on the duration of the treatment to which the. graphite is subjected and can be varied at will. but should not be made too thick for the reason that it increases the resist-ance of the rectifying unit.
  • a layer having a thickness of approximately .02 inches has been found satisfactory for ordinary purposes. lt should be understood that the carbide coating ofthe graphite maybe produced not only by the vapor emanating from fused quartz but also by the deposition of the carbide itself from the vapor state or by the vapors emanating from heated carbides, oxycarbides and the like'.
  • An alternating current rectifier comprising a layer of graphite, and a layer 0f silicon carbide.
  • An alternating current rectifier comprising a layer of a carbonaceous material, and a layer of a carbide mechanically united with said layer of carbonaceous material.
  • An alternating current rectifier provided with an integral unit comprising a layer of graphite and a layer of silicon carbide.

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  • Rectifiers (AREA)
US183841A 1927-04-14 1927-04-14 Alternating-current rectifier Expired - Lifetime US1658647A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DEI33018D DE501227C (de) 1927-04-14 Scheibengleichrichter fuer staerkere Wechselstroeme
NL25926D NL25926C (enrdf_load_stackoverflow) 1927-04-14
US183841A US1658647A (en) 1927-04-14 1927-04-14 Alternating-current rectifier
FR652876D FR652876A (fr) 1927-04-14 1928-04-14 Nouveau redresseur électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US183841A US1658647A (en) 1927-04-14 1927-04-14 Alternating-current rectifier

Publications (1)

Publication Number Publication Date
US1658647A true US1658647A (en) 1928-02-07

Family

ID=22674515

Family Applications (1)

Application Number Title Priority Date Filing Date
US183841A Expired - Lifetime US1658647A (en) 1927-04-14 1927-04-14 Alternating-current rectifier

Country Status (3)

Country Link
US (1) US1658647A (enrdf_load_stackoverflow)
FR (1) FR652876A (enrdf_load_stackoverflow)
NL (1) NL25926C (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2677627A (en) * 1951-10-26 1954-05-04 Norton Co Process of coating carbonaceous material with silicon carbide
US3629670A (en) * 1970-09-23 1971-12-21 Gen Electric Electrical contact to silicon carbide

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2677627A (en) * 1951-10-26 1954-05-04 Norton Co Process of coating carbonaceous material with silicon carbide
US3629670A (en) * 1970-09-23 1971-12-21 Gen Electric Electrical contact to silicon carbide

Also Published As

Publication number Publication date
FR652876A (fr) 1929-03-14
NL25926C (enrdf_load_stackoverflow)

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