GB1400762A - Semiconductor rod electrical heating systems for use in semi conductor rod manufacturing processes - Google Patents

Semiconductor rod electrical heating systems for use in semi conductor rod manufacturing processes

Info

Publication number
GB1400762A
GB1400762A GB3190972A GB3190972A GB1400762A GB 1400762 A GB1400762 A GB 1400762A GB 3190972 A GB3190972 A GB 3190972A GB 3190972 A GB3190972 A GB 3190972A GB 1400762 A GB1400762 A GB 1400762A
Authority
GB
United Kingdom
Prior art keywords
current
rod
switch
rectifier
manufacturing processes
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
GB3190972A
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.)
Siemens AG
Original Assignee
Siemens AG
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 claimed from DE19712133863 external-priority patent/DE2133863C3/en
Application filed by Siemens AG filed Critical Siemens AG
Publication of GB1400762A publication Critical patent/GB1400762A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/40—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices
    • G05F1/44—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only
    • G05F1/445—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being transistors in series with the load
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
    • G05F1/40—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices
    • G05F1/44—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only
    • G05F1/45—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
    • G05F1/455—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Resistance Heating (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

1400762 Automatic current control SIEMENS A G 7 July 1972 [7 July 1971] 31909/72 Heading G3R [Also in Division H3] The heating current to a semi-conductor rod is regulated by varying the fixing angle of an electronic switch, between the rod and a current source, according to the difference between a reference signal and a D.C. signal produced from the measured heating current via a rectifier and smoothing circuit. The current is thus regulated despite variations in the resistance of the rod as it is manufactured. As shown, switch 3 e.g. a thyratron, switching transistor, thyristor or triac controls the current from a single phase (or three phase) supply 2 to rod 1, the current being sensed by current transformer 4, rectified by bridge 5 and applied to lowpass network 7. The output of this network, a signal G proportional to the heating current r.m.s. or average value, is compared with a reference G o by differential D.C. amplifier 10, to control the firing angle of switch 3, using a pulse generator 11 (see Division H3). The transformer 4 may be replaced by a shunt and rectifier bridge 5 replaced by a half-wave rectifier.
GB3190972A 1971-07-07 1972-07-07 Semiconductor rod electrical heating systems for use in semi conductor rod manufacturing processes Expired GB1400762A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712133863 DE2133863C3 (en) 1971-07-07 Device for depositing semiconductor material from the gas phase on the surface of a heated semiconductor rod

Publications (1)

Publication Number Publication Date
GB1400762A true GB1400762A (en) 1975-07-23

Family

ID=5812968

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3190972A Expired GB1400762A (en) 1971-07-07 1972-07-07 Semiconductor rod electrical heating systems for use in semi conductor rod manufacturing processes

Country Status (6)

Country Link
US (1) US3832626A (en)
BE (1) BE786005A (en)
FR (1) FR2147958B1 (en)
GB (1) GB1400762A (en)
IT (1) IT962432B (en)
NL (1) NL7207136A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112925373A (en) * 2021-01-27 2021-06-08 南京丹迪克电力仪表有限公司 Multi-range constant current source circuit, multi-range constant current source and control method

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1465191A (en) * 1974-03-29 1977-02-23 Nat Res Dev Automatically controlled crystal growth
DE2753567C3 (en) * 1977-12-01 1982-04-15 Wacker-Chemitronic Gesellschaft für Elektronik-Grundstoffe mbH, 8263 Burghausen Process for the production of high-purity semiconductor materials and pure metals
KR100201808B1 (en) * 1995-12-28 1999-06-15 윤종용 Low pass filter of radio transmitter
US5844791A (en) * 1997-06-30 1998-12-01 Mte Corporation Single-phase harmonic filter system
US6768227B1 (en) * 2003-01-22 2004-07-27 Prodigit Electronics Co., Ltd. Digital controlled power regulation device
US20090250440A1 (en) * 2008-04-04 2009-10-08 Yap Tze-Yee Ryan Out-of-phase electrical welder and process
US8666504B2 (en) * 2011-10-24 2014-03-04 Boston Scientific Neuromodulation Corporation Communication and charging circuitry for a single-coil implantable medical device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1833867A (en) * 1926-05-17 1931-11-24 Dubilier Condenser Corp Filter system
US2015534A (en) * 1933-05-27 1935-09-24 Westinghouse Electric & Mfg Co Filter system for mercury-arc rectifiers
US2792317A (en) * 1954-01-28 1957-05-14 Westinghouse Electric Corp Method of producing multiple p-n junctions
US3319152A (en) * 1963-12-19 1967-05-09 Honeywell Inc Scr switching circuit
US3372328A (en) * 1964-11-24 1968-03-05 Honeywell Inc Scr temperature control circuit
US3447902A (en) * 1966-04-04 1969-06-03 Motorola Inc Single crystal silicon rods
US3532900A (en) * 1966-08-31 1970-10-06 Sola Basic Ind Inc Dc squelch circuit
US3538427A (en) * 1968-05-13 1970-11-03 Microdyne Inc Alternating current constant rms voltage regulator
US3700412A (en) * 1968-12-06 1972-10-24 Kokusai Electric Co Ltd Crystal pulling apparatus having means for maintaining liquid solid crystal interface at a constant temperature
GB1323441A (en) * 1969-06-20 1973-07-18 Matsushita Electric Ind Co Ltd Converter for changing alternating current into direct current
JPS5528200B1 (en) * 1970-09-02 1980-07-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112925373A (en) * 2021-01-27 2021-06-08 南京丹迪克电力仪表有限公司 Multi-range constant current source circuit, multi-range constant current source and control method

Also Published As

Publication number Publication date
FR2147958A1 (en) 1973-03-11
IT962432B (en) 1973-12-20
US3832626A (en) 1974-08-27
NL7207136A (en) 1973-01-09
FR2147958B1 (en) 1975-08-29
BE786005A (en) 1972-11-03

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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