GB1003325A - Improvements in adjustable sliding brush transformer - Google Patents

Improvements in adjustable sliding brush transformer

Info

Publication number
GB1003325A
GB1003325A GB30168/62A GB3016862A GB1003325A GB 1003325 A GB1003325 A GB 1003325A GB 30168/62 A GB30168/62 A GB 30168/62A GB 3016862 A GB3016862 A GB 3016862A GB 1003325 A GB1003325 A GB 1003325A
Authority
GB
United Kingdom
Prior art keywords
heat sink
core
winding
heat
contact
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
GB30168/62A
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 GB1003325A publication Critical patent/GB1003325A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/06—Variable transformers or inductances not covered by group H01F21/00 with current collector gliding or rolling on or along winding

Abstract

1,003,325. Transformers. GENERAL ELECTRIC CO. Aug. 7, 1962 [Aug. 9, 1961], No. 30168/62. Heading H1T. An adjustable transformer 10 in which undesired heat is generated in the area of contact between an electrical contact surface 15 formed from successively disposed adjacent turns of a toroidal winding 13 and a brush 16 mounted for slidable movement over surface 15 has a ring-shaped heat sink 30 adjacent to the entire surface 15, the heat sink (which may be 30 or core 11) being enveloped by winding 13 and providing even cooling of surface 15. Heat sink 30 is a ring of metal having high thermal conductivity and low electrical resistance such as silver, copper, aluminium, brass, bronze or silver-plated brass. The brush holder is secured to radiator plate 18. Winding 13 is on a two-part grooved insulating former 12 on core 11 made from spirally wound ribbon or sheet. The input is to leads 24, 25 and the load 31 is connected across output terminals 26, 27. In a second embodiment (Fig. 3, not shown), the heat sink is laminated by being made from spirally wound strip or of concentric rings. In a third embodiment (Fig. 4, not shown), the heat sink has projections passing through the insulating former into contact with the core for transmission of heat to the core. If the core itself is the heat sink it slopes upwards from the centre to a flat part beneath surface 15.
GB30168/62A 1961-08-09 1962-08-07 Improvements in adjustable sliding brush transformer Expired GB1003325A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US130364A US3160842A (en) 1961-08-09 1961-08-09 Adjustable sliding brush transformer

Publications (1)

Publication Number Publication Date
GB1003325A true GB1003325A (en) 1965-09-02

Family

ID=22444344

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30168/62A Expired GB1003325A (en) 1961-08-09 1962-08-07 Improvements in adjustable sliding brush transformer

Country Status (4)

Country Link
US (1) US3160842A (en)
BE (1) BE621161A (en)
DE (1) DE1276189B (en)
GB (1) GB1003325A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015104205U1 (en) * 2015-08-11 2016-11-14 Tridonic Gmbh & Co Kg Inductance with local cooling

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3374452A (en) * 1966-09-26 1968-03-19 Gen Electric Toroidal transformer construction and method of constructing same
US4577146A (en) * 1982-09-13 1986-03-18 The Superior Electric Company Variable autotransformer having an indexed stepping brush
DK26787A (en) * 1987-01-19 1988-07-20 Transpower As HEAT DISTRIBUTION WINDING

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE422266C (en) * 1921-02-11 1925-11-27 Fried Krupp Akt Ges Arrangement for heat dissipation in a housing, stored electrical conductor
DE450902C (en) * 1923-04-03 1927-10-15 Emil Pfiffner Device for heat dissipation from high-voltage coil systems cast in insulating compound in an insulating housing
DE593732C (en) * 1931-02-25 1934-03-02 Siemens Schuckertwerke Akt Ges Device for heat dissipation from the active parts of transformers with tube winding
US2009013A (en) * 1934-06-01 1935-07-23 Gen Radio Co Alternating-current apparatus
US2204623A (en) * 1936-07-17 1940-06-18 Ruben Samuel Variable resistor
DE886780C (en) * 1943-06-06 1953-08-17 Basf Ag Air-cooled regulating transformer
GB569671A (en) * 1943-08-24 1945-06-04 Reginald Charles Henniker Improvements in electric voltage regulators comprising inductive windings having a variable number of turns
US2555103A (en) * 1947-03-05 1951-05-29 Ward Leonard Electric Co Electric controlling apparatus
US2949592A (en) * 1951-04-19 1960-08-16 Gen Radio Co Adjustable transformer with stabilized contact track
CH299490A (en) * 1952-02-13 1954-06-15 Sondyna Ag Mains transformer with improved heat dissipation.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015104205U1 (en) * 2015-08-11 2016-11-14 Tridonic Gmbh & Co Kg Inductance with local cooling

Also Published As

Publication number Publication date
BE621161A (en)
US3160842A (en) 1964-12-08
DE1276189B (en) 1968-08-29

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