GB1114102A – Direct current transformation
– Google Patents
GB1114102A – Direct current transformation
– Google Patents
Direct current transformation
Info
Publication number
GB1114102A
GB1114102A
GB925866A
GB925866A
GB1114102A
GB 1114102 A
GB1114102 A
GB 1114102A
GB 925866 A
GB925866 A
GB 925866A
GB 925866 A
GB925866 A
GB 925866A
GB 1114102 A
GB1114102 A
GB 1114102A
Authority
GB
United Kingdom
Prior art keywords
voltage
scr1
scr2
pulses
arrangement
Prior art date
1966-03-03
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
GB925866A
Inventor
David Gurwicz
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.)
Sevcon Engineering Ltd
Original Assignee
Sevcon Engineering 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.)
1966-03-03
Filing date
1966-03-03
Publication date
1968-05-15
1966-03-03
Application filed by Sevcon Engineering Ltd
filed
Critical
Sevcon Engineering Ltd
1966-03-03
Priority to GB925866A
priority
Critical
patent/GB1114102A/en
1968-05-15
Publication of GB1114102A
publication
Critical
patent/GB1114102A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
H02M3/00—Conversion of dc power input into dc power output
H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02M3/125—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
H02M3/135—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
H02M3/137—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
Abstract
1,114,102. Supply systems for consumption apparatus. SEVCON ENGINEERING Ltd. 31 Jan., 1967 [3 March, 1966], No. 9258/66. Heading H2H. [Also in Division G3] A circuit arrangement for producing from a direct voltage of one value a direct voltage of another, lower, voltage comprises means for chopping the original voltage into pulses which may have a variable frequency or a variable width. A direct voltage is applied at terminals X and a lower voltage is taken from terminals Y, the chopping function being effected by two controlled rectifiers SCR1, SCR2. Conduction of SCR1 causes capacitor C1 to charge by way of inductor L, a further capacitor C2 being charged at the same time. When the capacitor C2 is fully charged, SCR2 fires after a time delay determined by a delay unit TD, thus causing SCR1 to be extinguished. After a further period determined by a variable unit FB, SCR1 refires, extinguishing SCR2 and the cycle is then repeated, the output direct voltage being the mean of the pulses which are produced. The arrangement produces pulses having a constant width and a variable frequency. In a further embodiment the units FB, TD are associated with SCR2 and SCR1 respectively and with this arrangement the pulses have constant frequency but variable width. The arrangement is suitable for producing a voltage for the headlights of a vehicle driven from a higher voltage supply.
GB925866A
1966-03-03
1966-03-03
Direct current transformation
Expired
GB1114102A
(en)
Priority Applications (1)
Application Number
Priority Date
Filing Date
Title
GB925866A
GB1114102A
(en)
1966-03-03
1966-03-03
Direct current transformation
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
GB925866A
GB1114102A
(en)
1966-03-03
1966-03-03
Direct current transformation
Publications (1)
Publication Number
Publication Date
GB1114102A
true
GB1114102A
(en)
1968-05-15
Family
ID=9868519
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB925866A
Expired
GB1114102A
(en)
1966-03-03
1966-03-03
Direct current transformation
Country Status (1)
Country
Link
GB
(1)
GB1114102A
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3663942A
(en)
*
1969-11-07
1972-05-16
Picker Andrex X Ray As
Circuit arrangement for transforming the voltage of a dc voltage source into a pulsating voltage
GB2305791A
(en)
*
1995-09-27
1997-04-16
Allan George Alexander Guthrie
Vehicle electrical system with a plurality of different voltages
1966
1966-03-03
GB
GB925866A
patent/GB1114102A/en
not_active
Expired
Cited By (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3663942A
(en)
*
1969-11-07
1972-05-16
Picker Andrex X Ray As
Circuit arrangement for transforming the voltage of a dc voltage source into a pulsating voltage
GB2305791A
(en)
*
1995-09-27
1997-04-16
Allan George Alexander Guthrie
Vehicle electrical system with a plurality of different voltages
US5821634A
(en)
*
1995-09-27
1998-10-13
Guthrie; Allan George Alexander
Electrical circuit to reduce voltage supplied to sensitive components from elevated voltage supply of a vehicle battery
GB2305791B
(en)
*
1995-09-27
1999-11-17
Allan George Alexander Guthrie
Electrical circuits
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