GB950503A - Improvements in or relating to direct current to direct current convertors - Google Patents
Improvements in or relating to direct current to direct current convertorsInfo
- Publication number
- GB950503A GB950503A GB4349261A GB4349261A GB950503A GB 950503 A GB950503 A GB 950503A GB 4349261 A GB4349261 A GB 4349261A GB 4349261 A GB4349261 A GB 4349261A GB 950503 A GB950503 A GB 950503A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transformer
- winding
- capacitor
- rectifier
- transistor
- 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
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/305—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a thyratron or thyristor type requiring extinguishing means
- H02M3/315—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M3/3155—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only with automatic control of the output voltage or current
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Generation Of Surge Voltage And Current (AREA)
Abstract
950,503. Converting. GENERAL ELECTRIC CO. Ltd. Dec. 4, 1962 [Dec. 5, 1961], No. 43492/61. Heading H2F. [Also in Divisions G3 and H3] In a D.C. to D.C. converter, a semi-conductor controlled rectifier 3, a winding 4 of a saturating current transformer 5, a rectifier 6 and the primary winding 7 of a pulse transformer 8 are connected in series across input terminals 1, 2; the output current for a load 16 is derived from a capacitor 14 which is connected to a secondary winding 11 of the transformer 8 over a rectifier 12, and an oscillator 18 produces a continuous train of firing pulses which are applied to the gate of the S.C.R. 3, by way of a control circuit 19 which includes the emitter/collector path of a transistor 23 and the winding 25 of a transformer 21, the base of transistor 23 being connected to a potentiometer 15 in parallel with the capacitor 14. The arrangement is such that transistor 23 is conducting when the voltage across capacitor 14 is below a desired value, whereby control pulses are supplied continuously to the controlled rectifier 3; each time the rectifier 3 fires it is rendered quiescent shortly afterwards by a circuit including transformer 5 and capacitor 10 (see Division H3), so that current pulses supplied to winding 7 of transformer 8 result in a signal in winding 11, which signal is rectified and smoothed, so providing an increased charge on capacitor 14; when this charge is such that the output voltage has the desired value, the collector/emitter path of transistor 23 is rendered non-conducting and firing pulses no longer reach the controlled rectifier 3. The output voltage of the converter is thus maintained at a desired value. A second control circuit 29, similar to the circuit 19, may be provided, this second circuit being arranged to operate in dependence upon load current, as sensed by the voltage drop across a resistor 30, whereby firing pulses are prevented from reaching the controlled rectifier 3 if the load current exceeds a predetermined value.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4349261A GB950503A (en) | 1961-12-05 | 1961-12-05 | Improvements in or relating to direct current to direct current convertors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB4349261A GB950503A (en) | 1961-12-05 | 1961-12-05 | Improvements in or relating to direct current to direct current convertors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB950503A true GB950503A (en) | 1964-02-26 |
Family
ID=10428981
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4349261A Expired GB950503A (en) | 1961-12-05 | 1961-12-05 | Improvements in or relating to direct current to direct current convertors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB950503A (en) |
-
1961
- 1961-12-05 GB GB4349261A patent/GB950503A/en not_active Expired
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