JPS6393790U - - Google Patents
Info
- Publication number
- JPS6393790U JPS6393790U JP18681286U JP18681286U JPS6393790U JP S6393790 U JPS6393790 U JP S6393790U JP 18681286 U JP18681286 U JP 18681286U JP 18681286 U JP18681286 U JP 18681286U JP S6393790 U JPS6393790 U JP S6393790U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- coil
- oscillation transistor
- output
- predetermined level
- 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 description 5
- 230000007423 decrease Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
Description
第１図は本考案の一実施例を示すＤＣ―ＤＣコ
ンバータの回路図、第２図は発振トランジスタの
コレクタ電流と、出力電流の検出用抵抗が発生し
た電圧との関係を示す波形図、第３図及び第４図
は従来例として示したＤＣ―ＤＣコンバータの回
路図、第５図は昇圧トランスが備える磁性鉄心の
磁化状態を示すＢ―Ｈ曲線図である。
１…昇圧トランス、２…発振トランジスタ、３
，４…時定数回路を構成する抵抗とコンデンサ、
１０…出力電流検出用の抵抗、１１…バイアス電
圧用の抵抗、１３…定電圧素子、１４，１５…磁
気飽和防止用のトランジスタ。
Fig. 1 is a circuit diagram of a DC-DC converter showing an embodiment of the present invention, Fig. 2 is a waveform diagram showing the relationship between the collector current of the oscillation transistor and the voltage generated by the output current detection resistor, and Fig. 3 and 4 are circuit diagrams of a DC-DC converter shown as a conventional example, and FIG. 5 is a BH curve diagram showing the magnetization state of a magnetic core included in a step-up transformer. 1...Step-up transformer, 2...Oscillation transistor, 3
, 4...Resistors and capacitors forming the time constant circuit,
10... Resistor for output current detection, 11... Resistor for bias voltage, 13... Constant voltage element, 14, 15... Transistor for preventing magnetic saturation.
Claims (1)
スタにより断続化し、コイルのフライバツク電圧
によつて電池電源電圧を昇圧する構成のＤＣ―Ｄ
Ｃコンバータにおいて、出力コイルの出力電流路
に抵抗部材を設けると共に、この抵抗部材に発生
する電圧が予定レベル以下に減少したとき、この
電圧に応動して非導通となるスイツチング部材を
上記発振トランジスタのベース・エミツタ間に接
続し、出力コイルを流れる出力電流が充分減少し
上記抵抗部材の電圧が予定レベル以下に減少する
まで発振トランジスタのＯＦＦを維持させる構成
としてなるＤＣ―ＤＣコンバータ。 A DC-D with a configuration in which the input coil current of the step-up transformer is made intermittent by an oscillation transistor, and the battery power supply voltage is boosted by the flyback voltage of the coil.
In the C converter, a resistive member is provided in the output current path of the output coil, and a switching member that becomes non-conductive in response to this voltage when the voltage generated in the resistive member decreases below a predetermined level is connected to the oscillation transistor. A DC-DC converter connected between a base and an emitter, and configured to maintain an oscillation transistor OFF until the output current flowing through the output coil is sufficiently reduced and the voltage of the resistor member is reduced below a predetermined level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986186812U JPH043594Y2 (en) | 1986-12-05 | 1986-12-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986186812U JPH043594Y2 (en) | 1986-12-05 | 1986-12-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6393790U true JPS6393790U (en) | 1988-06-17 |
| JPH043594Y2 JPH043594Y2 (en) | 1992-02-04 |
Family
ID=31136711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986186812U Expired JPH043594Y2 (en) | 1986-12-05 | 1986-12-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH043594Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55166662A (en) * | 1979-06-14 | 1980-12-25 | Matsushita Electric Ind Co Ltd | High-voltage power source device for copying machine |
| JPS5857072A (en) * | 1981-09-30 | 1983-04-05 | Toyota Motor Corp | Ignition timing controlling method of electronic control engine |
-
1986
- 1986-12-05 JP JP1986186812U patent/JPH043594Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55166662A (en) * | 1979-06-14 | 1980-12-25 | Matsushita Electric Ind Co Ltd | High-voltage power source device for copying machine |
| JPS5857072A (en) * | 1981-09-30 | 1983-04-05 | Toyota Motor Corp | Ignition timing controlling method of electronic control engine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH043594Y2 (en) | 1992-02-04 |
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