JPS5569822A - Power unit - Google Patents
Power unitInfo
- Publication number
- JPS5569822A JPS5569822A JP14316478A JP14316478A JPS5569822A JP S5569822 A JPS5569822 A JP S5569822A JP 14316478 A JP14316478 A JP 14316478A JP 14316478 A JP14316478 A JP 14316478A JP S5569822 A JPS5569822 A JP S5569822A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- rectifier
- circuit
- switch
- double
- 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
Landscapes
- Control Of Electrical Variables (AREA)
Abstract
PURPOSE: To hold a secondary output voltage nearly constant even if the primary input voltage of a power transformer would vary by connecting a double voltage rectifier circuit and bridge rectifier circuit, connected selectively, to a switch for automatic switching.
CONSTITUTION: In accordance with the value of a voltage applied between input terminals 1 and 2 of power transformer 4, relay 27 is operated to change-over switch 14 connected to the secondary side of coupled transformer 9. Further, bridge rectifier 15 is connected between terminals 1 and 2, smoothing circuit 16 is provided on the output side of rectifier 15, and capacitors 18 and 19 for double voltage rectification are connected between rectifier 15 and smoothing circuit 16. Between the contact of switch 14 and the connection point of capacitors 18 and 19, triacs 12 and 13 are connected so as to alternate between the output voltage of rectifier 15 and its double voltage through the working of switch 14 according to a supply voltage between terminal 1 and 2, and fine variation in input voltage is compensated by voltage compensator circuit 17 connected to circuit 16, thereby outputting a nearly- constant voltage.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14316478A JPS5569822A (en) | 1978-11-20 | 1978-11-20 | Power unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14316478A JPS5569822A (en) | 1978-11-20 | 1978-11-20 | Power unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5569822A true JPS5569822A (en) | 1980-05-26 |
Family
ID=15332395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14316478A Pending JPS5569822A (en) | 1978-11-20 | 1978-11-20 | Power unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5569822A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5819314U (en) * | 1981-07-31 | 1983-02-05 | 日本電気ホームエレクトロニクス株式会社 | Automatic power switching device |
JPS62242212A (en) * | 1986-04-15 | 1987-10-22 | Sanee Denki Kk | Ac constant voltage circuit and its equipment |
-
1978
- 1978-11-20 JP JP14316478A patent/JPS5569822A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5819314U (en) * | 1981-07-31 | 1983-02-05 | 日本電気ホームエレクトロニクス株式会社 | Automatic power switching device |
JPH0248889Y2 (en) * | 1981-07-31 | 1990-12-21 | ||
JPS62242212A (en) * | 1986-04-15 | 1987-10-22 | Sanee Denki Kk | Ac constant voltage circuit and its equipment |
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