JPS5588569A - Starting circuit for dc-dc converter - Google Patents
Starting circuit for dc-dc converterInfo
- Publication number
- JPS5588569A JPS5588569A JP16153878A JP16153878A JPS5588569A JP S5588569 A JPS5588569 A JP S5588569A JP 16153878 A JP16153878 A JP 16153878A JP 16153878 A JP16153878 A JP 16153878A JP S5588569 A JPS5588569 A JP S5588569A
- Authority
- JP
- Japan
- Prior art keywords
- capacitor
- starting circuit
- voltage
- converter
- trigger diode
- 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 accurately start a converter only when power is applied, by appropriately selecting the charging time constant of a capacitor of a starting circuit to cause a trigger diode to perform triggering.
CONSTITUTION: When a voltage is applied, another voltage appears between lines B, C to charge a capacitor C5 of a starting circuit 1. When the charging voltage exceeds the threshold voltage of a trigger diode Dr, it is closed to turn on a transistor Q2. At the same time, a diode D7 is closed to discharge the capacitor C5 through the transistor Q2. A charging time constant determined by resistors R1, R2 and the capacitor C5 is set much longer than the period of closing of the transistors Q1, Q2 so that starting is accurately effected only when power is applied. This results in preventing the trigger diode from causing malfunction in an ordinary operation.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16153878A JPS5588569A (en) | 1978-12-26 | 1978-12-26 | Starting circuit for dc-dc converter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16153878A JPS5588569A (en) | 1978-12-26 | 1978-12-26 | Starting circuit for dc-dc converter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5588569A true JPS5588569A (en) | 1980-07-04 |
Family
ID=15736994
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16153878A Pending JPS5588569A (en) | 1978-12-26 | 1978-12-26 | Starting circuit for dc-dc converter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5588569A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2486668C1 (en) * | 2012-06-15 | 2013-06-27 | Закрытое акционерное общество "Научно-производственный центр "Промэлектроника" (ЗАО "НПЦ "Промэлектроника") | Electronic hysteresis device |
-
1978
- 1978-12-26 JP JP16153878A patent/JPS5588569A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2486668C1 (en) * | 2012-06-15 | 2013-06-27 | Закрытое акционерное общество "Научно-производственный центр "Промэлектроника" (ЗАО "НПЦ "Промэлектроника") | Electronic hysteresis device |
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