JPS6419967A - Switching control type power device - Google Patents
Switching control type power deviceInfo
- Publication number
- JPS6419967A JPS6419967A JP17331587A JP17331587A JPS6419967A JP S6419967 A JPS6419967 A JP S6419967A JP 17331587 A JP17331587 A JP 17331587A JP 17331587 A JP17331587 A JP 17331587A JP S6419967 A JPS6419967 A JP S6419967A
- Authority
- JP
- Japan
- Prior art keywords
- section
- load
- control
- constant
- currents
- 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
- Dc-Dc Converters (AREA)
Abstract
PURPOSE:To adjust a load-current set value finely and accurately by varying the magnitude of load currents under the state of constant-current operation by a control signal transmitted from the outside. CONSTITUTION:A switching control type power device is composed of a blocking oscillation section 1, an output extracting section 2, a constant voltage control section 3, a constant current control section 4 and a chopper section 5 for preparing negative voltage. The constant current control section 4 has a first circuit section 4a converting a load-current value setting signal transmitted over a terminal T3 into negative control voltage, a second circuit section 4b comparing the control voltage with the detecting output voltage of load currents, and a second control transistor Q3 controlling the quantity of shunt of the positive feedback currents of a switching transistor Q1 by a comparison output from the second circuit section 4b. A primary side transistor Q1 for a converter transformer CT is controlled and load currents are turned into constant currents, and the constant currents are regulated in response to the load-curent value setting signal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17331587A JPS6419967A (en) | 1987-07-10 | 1987-07-10 | Switching control type power device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17331587A JPS6419967A (en) | 1987-07-10 | 1987-07-10 | Switching control type power device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6419967A true JPS6419967A (en) | 1989-01-24 |
Family
ID=15958162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17331587A Pending JPS6419967A (en) | 1987-07-10 | 1987-07-10 | Switching control type power device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6419967A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH035021A (en) * | 1989-06-01 | 1991-01-10 | Kurimoto Ltd | Method for bending steel sheet spirally by bending rolls |
JPH035020A (en) * | 1989-06-01 | 1991-01-10 | Kurimoto Ltd | Method for u-bending steel sheet by bending rolls |
-
1987
- 1987-07-10 JP JP17331587A patent/JPS6419967A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH035021A (en) * | 1989-06-01 | 1991-01-10 | Kurimoto Ltd | Method for bending steel sheet spirally by bending rolls |
JPH035020A (en) * | 1989-06-01 | 1991-01-10 | Kurimoto Ltd | Method for u-bending steel sheet by bending rolls |
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