JPH01166483U - - Google Patents
Info
- Publication number
- JPH01166483U JPH01166483U JP6156588U JP6156588U JPH01166483U JP H01166483 U JPH01166483 U JP H01166483U JP 6156588 U JP6156588 U JP 6156588U JP 6156588 U JP6156588 U JP 6156588U JP H01166483 U JPH01166483 U JP H01166483U
- Authority
- JP
- Japan
- Prior art keywords
- coil
- secondary coil
- voltage
- primary
- switching element
- 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.)
- Granted
Links
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図はこの考案の一実施例の回路図、第２図
はそのタイムチヤート図、第３図は従来例の回路
図である。
２は安全回路、ＴＲ３はトランジスタ（スイツ
チング素子）、４は定電流回路、３はトランス、
３１は二次側第１コイル、３２は一次側コイル、
３３は二次側第２コイル。
FIG. 1 is a circuit diagram of an embodiment of this invention, FIG. 2 is a time chart thereof, and FIG. 3 is a circuit diagram of a conventional example. 2 is a safety circuit, TR3 is a transistor (switching element), 4 is a constant current circuit, 3 is a transformer,
31 is the secondary side first coil, 32 is the primary side coil,
33 is the secondary side second coil.
Claims (1)
３１に接続された一次側コイル３２と、二次側第
２コイル３３とからなるトランス３を備え、前記
一次側コイル３２に前記二次側第２コイル３３に
発生する電圧が正帰還され、前記二次側第１コイ
ル３１及び前記一次側コイル３２に直流電圧を印
加することによつて発振を開始し、直流電圧を出
力するＤＣ―ＤＣコンバータにおいて、前記二次
側第１コイル３１は、前記一次側コイル３２に流
れる電流をオン・オフ制御するスイツチング素子
ＴＲ３と、該スイツチング素子ＴＲ３に定電流Ｉ
Ｂを供給する定電流回路４を設けてなることを特
徴とするＤＣ―ＤＣコンバータ。 The transformer 3 includes a first secondary coil 31, a primary coil 32 connected to the first secondary coil 31, and a second secondary coil 33. The voltage generated in the second secondary coil 33 is positively fed back, and by applying a DC voltage to the first secondary coil 31 and the primary coil 32, oscillation is started, and a DC voltage is output. - In the DC converter, the secondary side first coil 31 includes a switching element TR3 that controls on/off the current flowing through the primary side coil 32, and a constant current I flowing through the switching element TR3.
A DC-DC converter characterized in that it is provided with a constant current circuit 4 that supplies B.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6156588U JPH0619331Y2 (en) | 1988-05-12 | 1988-05-12 | DC-DC converter |
| EP89106350A EP0340485B1 (en) | 1988-04-12 | 1989-04-11 | Control system for head-up display for automotive vehicles |
| DE68926799T DE68926799T2 (en) | 1988-04-12 | 1989-04-11 | Control system for head-up displays for motor vehicles |
| US07/337,134 US5202668A (en) | 1988-04-12 | 1989-04-12 | Control system for a head-up display for automotive vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6156588U JPH0619331Y2 (en) | 1988-05-12 | 1988-05-12 | DC-DC converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01166483U true JPH01166483U (en) | 1989-11-21 |
| JPH0619331Y2 JPH0619331Y2 (en) | 1994-05-18 |
Family
ID=31287224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6156588U Expired - Lifetime JPH0619331Y2 (en) | 1988-04-12 | 1988-05-12 | DC-DC converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0619331Y2 (en) |
-
1988
- 1988-05-12 JP JP6156588U patent/JPH0619331Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0619331Y2 (en) | 1994-05-18 |