GB806537A - Improvements in or relating to voltage stabilizing circuits including transistors - Google Patents
Improvements in or relating to voltage stabilizing circuits including transistorsInfo
- Publication number
- GB806537A GB806537A GB22255/56A GB2225556A GB806537A GB 806537 A GB806537 A GB 806537A GB 22255/56 A GB22255/56 A GB 22255/56A GB 2225556 A GB2225556 A GB 2225556A GB 806537 A GB806537 A GB 806537A
- Authority
- GB
- United Kingdom
- Prior art keywords
- transistor
- voltage
- punch
- terminal
- tap
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
- G05F3/02—Regulating voltage or current
- G05F3/08—Regulating voltage or current wherein the variable is dc
- G05F3/10—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics
- G05F3/16—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices
- G05F3/20—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
- G05F3/22—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Nonlinear Science (AREA)
- Control Of Electrical Variables (AREA)
- Continuous-Control Power Sources That Use Transistors (AREA)
Abstract
806,537. Automatic voltage-control systems. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. July 18, 1956 [Aug. 4, 1955], No. 22255/56. Class 38 (4). [Also in Group XXXVI] In a circuit for stabilizing the voltage across terminals 4, 5, Fig. 1, the collector of transistor 6 is connected to the junction 4 of resistors 2 and 3, the base is earthed, and the emitter is connected to the base of a further transistor 10, the emitter of which is earthed and the collector also connected to terminal 4. The transistor 6 has a low punch-through voltage, e.g. 15 volts, obtained by making the base region only a few microns thick, the punch-through voltage being the value at which the space charge region at the collector extends through to the emitter, thus reducing emitter-collector impedance to a low value. The transistor thus has a constant voltage characteristic similar to that of a neonfilled discharge tube. The punch-through voltage of transistor 10 is of a much higher value and this transistor amplifies the variation of current through transistor 6. In a modification a further transistor connected between transistors 8 and 10 acts as an impedance matching device. In a further modification, a second transistor 18, Fig. 4, having a low punch-through voltage, is connected as shown and thus results in adding the punch-through voltages of transistors 6 and 18. Fig. 5 shows an arrangement in which a high punch-through voltage transistor 23 is connected between the negative terminal of the input source and the output terminal 4, and the base of a low punch-through voltage transistor 32 is connected to the tap 35 on a potentiometer 36 across the output terminals. When the voltage between terminal 4 and tap 35 exceeds the punch-through voltage of transistor 32, transistor 27 is unblocked and the resulting potential drop across resistor 22 decreases the current through transistor 23. In this way the voltage between terminal 4 and tap 35 is restored to the value of the punch-through voltage of transistor 32 and current ceases to flow through resistor 22. The voltage at terminals 4, 5 is thus stabilized in accordance with the position of the tap 35.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1129706T | 1955-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB806537A true GB806537A (en) | 1958-12-31 |
Family
ID=9637077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22255/56A Expired GB806537A (en) | 1955-08-04 | 1956-07-18 | Improvements in or relating to voltage stabilizing circuits including transistors |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1129706A (en) |
| GB (1) | GB806537A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1109746B (en) * | 1957-09-28 | 1961-06-29 | Siemens Ag | Power supply circuit with stabilization by transistors |
| NL144070B (en) * | 1964-06-27 | 1974-11-15 | Philips Nv | DC VOLTAGE SOURCE WITH REDUCED DYNAMIC OUTPUT IMPEDANCE. |
-
1955
- 1955-08-04 FR FR1129706D patent/FR1129706A/en not_active Expired
-
1956
- 1956-07-18 GB GB22255/56A patent/GB806537A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1129706A (en) | 1957-01-24 |
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