GB1172543A - Improvements in or relating to Switched Voltage Regulators - Google Patents
Improvements in or relating to Switched Voltage RegulatorsInfo
- Publication number
- GB1172543A GB1172543A GB384167A GB384167A GB1172543A GB 1172543 A GB1172543 A GB 1172543A GB 384167 A GB384167 A GB 384167A GB 384167 A GB384167 A GB 384167A GB 1172543 A GB1172543 A GB 1172543A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- capacitor
- voltage
- flow
- current
- 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
- H02M3/145—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 triode or transistor type requiring continuous application of a control signal
- H02M3/155—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/1563—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 triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators without using an external clock
Abstract
1,172,543. Automatic voltage control. MARCONI CO. Ltd. Jan.25, 1967 [Jan. 27, 1966], No.3841/67. Heading G3R. In a voltage regulator of the type including a switching transistor which is connected to load terminals by way of a filter constituted by a series inductor and a shunt capacitor, means are provided to limit the transient current flow, due to the charging of the said capacitor, which occurs when the regulator is initially switched on. As shown, a load 8 is supplied from a source 1 by way of a switching transistor 3 and an inductance/ capacitance filter 5, 6, the transistor 3 being controlled in known manner by circuitry 9, 10, 11 so that the voltage across the load is maintained constant; associated with the transistor 3 are a further transistor 19, resistors 4, 14, 15, 16 and 17, and a capacitor 18 inter-connected as illustrated. In operation, when the regulator is first switchedon capacitor 6 acts momentarily as a short-circuit, but as transistor 19 is initially in a high-resistance state the transistor 3 is rendered practically non- conducting, so that current does not flow to the capacitor; however the potential divider 14, 15 allows a voltage to be applied from the integrating circuit 17, 18 to the base of transistor 19 sufficient to bring the latter gradually into conduction, allowing base current to flow to transistor 3 and in turn allowing current to flow into capacitor 6 at a controlled rate. This effect is cumulative and continues until capacitor 6 is fully charged; the transistor 19 then is fully conductive and transistor 3 operates in normal manner. Thus, the power required to be dissipated in the transistor 3 during the initial transient period is materially reduced. Additionally provided in the circuit shown is a further integrating circuit 12, 13 the effect of which is to make the reference voltage, present in the control circuitry 9, 10, 11, rise at a controlled rate from zero at initial switch-on to the final predetermined value, so that switching of transistor 3 will also occur during the initial transient period, thereby reducing still further the power required to be dissipated in the transistor.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU928/66A AU404175B2 (en) | 1966-01-27 | Improvements in switched-voltage regulators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1172543A true GB1172543A (en) | 1969-12-03 |
Family
ID=3691596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB384167A Expired GB1172543A (en) | 1966-01-27 | 1967-01-25 | Improvements in or relating to Switched Voltage Regulators |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE1563984A1 (en) |
| GB (1) | GB1172543A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0105869A2 (en) * | 1982-10-04 | 1984-04-18 | Friedmann & Maier Aktiengesellschaft | Electronic switch |
| FR2584545A1 (en) * | 1985-07-03 | 1987-01-09 | Abiven Jacques | DC/DC voltage converter with auxiliary starting circuit |
| RU2815071C1 (en) * | 2023-10-15 | 2024-03-11 | Общество С Ограниченной Ответственностью "Инпут Трансформейшн Аутпут Корпорейшн" | Wide-range constant voltage regulator |
-
1967
- 1967-01-25 GB GB384167A patent/GB1172543A/en not_active Expired
- 1967-01-26 DE DE19671563984 patent/DE1563984A1/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0105869A2 (en) * | 1982-10-04 | 1984-04-18 | Friedmann & Maier Aktiengesellschaft | Electronic switch |
| EP0105869A3 (en) * | 1982-10-04 | 1985-11-21 | Friedmann & Maier Aktiengesellschaft | Electronic switch |
| FR2584545A1 (en) * | 1985-07-03 | 1987-01-09 | Abiven Jacques | DC/DC voltage converter with auxiliary starting circuit |
| RU2815071C1 (en) * | 2023-10-15 | 2024-03-11 | Общество С Ограниченной Ответственностью "Инпут Трансформейшн Аутпут Корпорейшн" | Wide-range constant voltage regulator |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1563984A1 (en) | 1970-09-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PE | Patent expired |