GB1114102A - Direct current transformation - Google Patents
Direct current transformationInfo
- 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
- 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
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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
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.
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)
| 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)
| 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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