JPS6488612A - Dc voltage stabilized power source device - Google Patents
Dc voltage stabilized power source deviceInfo
- Publication number
- JPS6488612A JPS6488612A JP24527987A JP24527987A JPS6488612A JP S6488612 A JPS6488612 A JP S6488612A JP 24527987 A JP24527987 A JP 24527987A JP 24527987 A JP24527987 A JP 24527987A JP S6488612 A JPS6488612 A JP S6488612A
- Authority
- JP
- Japan
- Prior art keywords
- regulator
- voltage
- switching
- circuit
- power source
- 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
- Continuous-Control Power Sources That Use Transistors (AREA)
- Dc-Dc Converters (AREA)
Abstract
PURPOSE:To cope with input voltages in a wide range by alternately switching a regulator circuit to make it act as a series regulator in case a detected input voltage is below a threshold voltage. CONSTITUTION:The regulator circuit acts as a series regulator or a switching regulator to respectively stabilize and output an input voltage, and a detection means 3 detects an input voltage. In response to this detection, a switching means Q4 lets the regulator circuit act as a switching regulator in case the detected voltage is above the prescribed threshold voltage, on the other hand, if the detected voltage is below the threshold voltage, the circuit is made operate as a series regulator; the regulator circuit is thus switched alternately. As a result, input voltages in a considerably wide range can be coped with.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24527987A JPS6488612A (en) | 1987-09-29 | 1987-09-29 | Dc voltage stabilized power source device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24527987A JPS6488612A (en) | 1987-09-29 | 1987-09-29 | Dc voltage stabilized power source device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6488612A true JPS6488612A (en) | 1989-04-03 |
Family
ID=17131309
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24527987A Pending JPS6488612A (en) | 1987-09-29 | 1987-09-29 | Dc voltage stabilized power source device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6488612A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4233078A1 (en) * | 1991-10-01 | 1993-04-08 | Mitsubishi Electric Corp | Stabilised DC power supply unit for, e.g. CD or cassette player and/or tuner - has switch reacting to device mode of operation to select state by which stabilisation is performed using series transistor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54144947A (en) * | 1978-04-03 | 1979-11-12 | Toko Inc | Switching power unit |
JPS57152020A (en) * | 1981-03-16 | 1982-09-20 | Seiko Epson Corp | Power supply circuit for device with small sized printer |
JPS57182816A (en) * | 1981-05-07 | 1982-11-10 | Mitsubishi Electric Corp | Direct current stabilizing power supply circuit |
JPS60257766A (en) * | 1984-05-31 | 1985-12-19 | Panafacom Ltd | Dc-dc power converter |
-
1987
- 1987-09-29 JP JP24527987A patent/JPS6488612A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54144947A (en) * | 1978-04-03 | 1979-11-12 | Toko Inc | Switching power unit |
JPS57152020A (en) * | 1981-03-16 | 1982-09-20 | Seiko Epson Corp | Power supply circuit for device with small sized printer |
JPS57182816A (en) * | 1981-05-07 | 1982-11-10 | Mitsubishi Electric Corp | Direct current stabilizing power supply circuit |
JPS60257766A (en) * | 1984-05-31 | 1985-12-19 | Panafacom Ltd | Dc-dc power converter |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4233078A1 (en) * | 1991-10-01 | 1993-04-08 | Mitsubishi Electric Corp | Stabilised DC power supply unit for, e.g. CD or cassette player and/or tuner - has switch reacting to device mode of operation to select state by which stabilisation is performed using series transistor |
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