JPS57111709A - Voltage dividing and dropping circuit - Google Patents
Voltage dividing and dropping circuitInfo
- Publication number
- JPS57111709A JPS57111709A JP18685880A JP18685880A JPS57111709A JP S57111709 A JPS57111709 A JP S57111709A JP 18685880 A JP18685880 A JP 18685880A JP 18685880 A JP18685880 A JP 18685880A JP S57111709 A JPS57111709 A JP S57111709A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- groups
- subcapacitor
- parallel
- voltage
- 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.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 abstract 7
- 238000006243 chemical reaction Methods 0.000 abstract 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Automation & Control Theory (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
PURPOSE:To extend the life of a small-sized electronic apparatus such as an electronic clock using a C-MOS and a small-sized battery, by adopting the capacitor voltage dividing system of high conversion efficiency for the voltage division ratio of a voltage dividing and dropping circuit. CONSTITUTION:A main capacitor 4 of a voltage dropping circuit 3 is connected in parallel to an electronic circuit 2, and n-number groups of subcapacitors 4a- 4n each of which consists of n-number capacitors are provided in the voltage dropping circuit 3. A changeover switch group is provided which switches the connection between the main capacitor 4 and subcapacitor groups 4a-4n and the connection between capacitors of subcapacitor groups 4a-4n. The main capacitor 4 is connected in parallel to the circuit 2, and subcapacitor groups 4a-4n are connected in series to this parallel circuit and are connected in parallel, and subcapacitor groups 4a-4n are charged by the battery 1. When the circuit where subcapacitor groups 4a-4n are connected in series is connected in parallel to the main capacitor 4, an optional voltage is supplied to the circuit 2.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18685880A JPS57111709A (en) | 1980-12-29 | 1980-12-29 | Voltage dividing and dropping circuit |
| US06/328,990 US4451743A (en) | 1980-12-29 | 1981-12-09 | DC-to-DC Voltage converter |
| GB8138453A GB2090483B (en) | 1980-12-29 | 1981-12-21 | Dc-to-dc voltage converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18685880A JPS57111709A (en) | 1980-12-29 | 1980-12-29 | Voltage dividing and dropping circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57111709A true JPS57111709A (en) | 1982-07-12 |
Family
ID=16195880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18685880A Pending JPS57111709A (en) | 1980-12-29 | 1980-12-29 | Voltage dividing and dropping circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57111709A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4776085A (en) * | 1985-11-08 | 1988-10-11 | Honda Giken Kogyo Kabushiki Kaisha | Apparatus for use in automobile assembling |
-
1980
- 1980-12-29 JP JP18685880A patent/JPS57111709A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4776085A (en) * | 1985-11-08 | 1988-10-11 | Honda Giken Kogyo Kabushiki Kaisha | Apparatus for use in automobile assembling |
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