GB1040261A - An improved electrical power supply circuit - Google Patents
An improved electrical power supply circuitInfo
- Publication number
- GB1040261A GB1040261A GB2400662A GB2400662A GB1040261A GB 1040261 A GB1040261 A GB 1040261A GB 2400662 A GB2400662 A GB 2400662A GB 2400662 A GB2400662 A GB 2400662A GB 1040261 A GB1040261 A GB 1040261A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- voltage
- circuit
- capacitor
- terminals
- 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
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/56—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices
- G05F1/563—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using semiconductor devices in series with the load as final control devices including two stages of regulation at least one of which is output level responsive, e.g. coarse and fine regulation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
- Control Of Electrical Variables (AREA)
Abstract
1,040,261. Automatic voltage control. SOLARTRON ELECTRONIC GROUP Ltd. June 17, 1963 [June 21, 1962], No. 2400/62. Heading G3R. A power supply circuit for supplying a stabilized voltage at output terminals 25, 26 comprises input terminals 16, 17 connected to an unstabilized unidirectional voltage source 10-15, a switching transistor 18 and a capacitor 19 connected in series across the terminals 16 and 17, a circuit including a transistor 21 for stabilizing the voltage appearing across the capacitor 19 and a bi-stable control circuit 20 which controls the switching transistor 18. The impedance of transistor 21 is controlled in known manner, by a circuit including a potential divider 22, 23, a reference Zener diode 27 and an amplifier 24, to maintain a constant voltage at terminals 25, 26, and the power dissipation in the transistor 21 is kept below a pre-determined level by the operation of control circuit 20 whose input circuit is connected across the transistor 21 and whose output is applied to the base of transistor 18. The arrangement is such that transistor 18 is switched continually from a fully conducting state, when capacitor 19 charges from the unstabilized input source, to a non-conducting state, when the capacitor 19 discharges into the load, as the voltage across transistor 21 rises and falls within predetermined limits. Thus, neither transistor can be overloaded, since transistor 18 is either non-conducting or fully conducting whilst the voltage across transistor 21 is maintained below a level at which the power dissipation would be excessive. The transistor 18 may be connected in parallel with the input terminals and the transistor 21 in parallel with the load. Valves may replace the transistors in the circuit which may also be arranged to maintain current constant. A detailed circuit arrangement including overload protection is described with reference to the drawing accompanying the complete Specification (not shown).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL294411D NL294411A (en) | 1962-06-21 | ||
GB2400662A GB1040261A (en) | 1962-06-21 | 1962-06-21 | An improved electrical power supply circuit |
FR938931A FR1361023A (en) | 1962-06-21 | 1963-06-21 | Advanced electrical power supply circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2400662A GB1040261A (en) | 1962-06-21 | 1962-06-21 | An improved electrical power supply circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1040261A true GB1040261A (en) | 1966-08-24 |
Family
ID=10204879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2400662A Expired GB1040261A (en) | 1962-06-21 | 1962-06-21 | An improved electrical power supply circuit |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1040261A (en) |
NL (1) | NL294411A (en) |
-
0
- NL NL294411D patent/NL294411A/xx unknown
-
1962
- 1962-06-21 GB GB2400662A patent/GB1040261A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL294411A (en) |
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