GB936792A - Improvements in or relating to alternating voltage control circuits - Google Patents
Improvements in or relating to alternating voltage control circuitsInfo
- Publication number
- GB936792A GB936792A GB2230362A GB2230362A GB936792A GB 936792 A GB936792 A GB 936792A GB 2230362 A GB2230362 A GB 2230362A GB 2230362 A GB2230362 A GB 2230362A GB 936792 A GB936792 A GB 936792A
- Authority
- GB
- United Kingdom
- Prior art keywords
- voltage
- current
- transductor
- load
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/12—Regulating voltage or current wherein the variable actually regulated by the final control device is ac
- G05F1/32—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices
- G05F1/34—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices
- G05F1/38—Regulating voltage or current wherein the variable actually regulated by the final control device is ac using magnetic devices having a controllable degree of saturation as final control devices combined with discharge tubes or semiconductor devices semiconductor devices only
Abstract
936,792. Automatic voltage control. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 8, 1962 [June 12, 1961], No. 22303/62. Class 38 (4). In an automatic alternating voltage control circuit of the type in which a transductor connected in series with a load is controlled over, an amplifier in accordance with the difference between a reference voltage and at least part of the output voltage, the biasing current for the transductor is passed through a resistor, the voltage drop across which, when exceeding the reference voltage, takes over control of the amplifier to limit the biasing current and hence the load current. As shown, a load 5 is supplied over a transductor 6, 6<SP>1</SP>, 8, 8<SP>1</SP> and a fuse 4 with A.C. derived from an inverter 3 connected to a D.C. supply source 1. The voltage across the load is applied to a potentiometer 15 by way of a transformer 9, 11, a rectifier 12 and a smoothing circuit 13, 14, and a tapping on the potentiometer is connected to the base of a transistor 16 which thus compares a voltage proportional to the output voltage with a reference voltage derived from a Zener diode 17 in the emitter circuit of the transistor. The collector of transistor 16 is connected to the control winding 20 of a magnetic amplifier which controls, over an output transformer 30 and a rectifier 31, the current in the biasing windings 8, 8<SP>1</SP> of the transductor whereby the output voltage is maintained constant. The transductor biasing current also passes through a fixed resistor 33 and an adjustable resistor 34, the voltabe across which is also applied to the base of transistor 16, over a diode 35 operating as a gate. The resistor 34 is so adjusted that, on overload, the voltage drop across it becomes larger than the reference voltage across the Zener diode 17 and larger than the voltage derived from the potentiometer 15, whereby the diode 35 is rendered conducting causing a much larger collector current to flow. The bias magnetization of magnetic amplifier 20 is thus reduced and the current through the transductor windings 8, 8<SP>1</SP> is also reduced so that the load current is limited to a safe value.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEN20178A DE1192729B (en) | 1961-06-12 | 1961-06-12 | AC voltage regulator with premagnetized choke coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB936792A true GB936792A (en) | 1963-09-11 |
Family
ID=7341174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2230362A Expired GB936792A (en) | 1961-06-12 | 1962-06-08 | Improvements in or relating to alternating voltage control circuits |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH403944A (en) |
| DE (1) | DE1192729B (en) |
| FR (1) | FR1325355A (en) |
| GB (1) | GB936792A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3196902B1 (en) * | 2016-01-25 | 2019-04-24 | Siemens Aktiengesellschaft | Circuit assembly for the reduction of a unidirectional flux fraction in the soft magnetic core of a transformer |
| CN106253641B (en) * | 2016-08-26 | 2018-12-28 | 重庆西南集成电路设计有限责任公司 | A kind of rectifier diode replacement circuit and reverse-biased cut-off driving circuit |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE469175A (en) * | 1945-11-16 | |||
| US2634394A (en) * | 1951-01-29 | 1953-04-07 | Asea Ab | Means for making a regulator alternatively responsive to voltage and current |
| US2759142A (en) * | 1953-04-07 | 1956-08-14 | Bell Telephone Labor Inc | Transistor and electromagnetic control apparatus |
-
1961
- 1961-06-12 DE DEN20178A patent/DE1192729B/en active Pending
-
1962
- 1962-06-08 CH CH693462A patent/CH403944A/en unknown
- 1962-06-08 GB GB2230362A patent/GB936792A/en not_active Expired
- 1962-06-12 FR FR900399A patent/FR1325355A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH403944A (en) | 1965-12-15 |
| DE1192729B (en) | 1965-05-13 |
| FR1325355A (en) | 1963-04-26 |
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