JPH0454485U - - Google Patents
Info
- Publication number
- JPH0454485U JPH0454485U JP9664790U JP9664790U JPH0454485U JP H0454485 U JPH0454485 U JP H0454485U JP 9664790 U JP9664790 U JP 9664790U JP 9664790 U JP9664790 U JP 9664790U JP H0454485 U JPH0454485 U JP H0454485U
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- parallel
- photothyristor
- input terminal
- series circuit
- 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
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は同実施例における各部の波形を示す図、第３
図は過飽和リアクトルのＢ−Ｈ特性を示す図、第
４図は従来例の回路図である。
１，１７，２２……コンデンサ、２，３，７，
１１，１３，１４，１８，２０，２１，２３，２
４，２７〜３０……抵抗、４，１２……トランジ
スタ、５，１６……ダイオード、６……過飽和リ
アクトル、８……フオトサイリスタ発光部、９…
…チヨークコイル、１０，２６……コンパレータ
、１５……基準電圧、１９……フオトサイリスタ
発光部、２５……サイリスタ。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure shows the waveforms of each part in the same example.
This figure shows the B-H characteristic of a supersaturated reactor, and FIG. 4 is a circuit diagram of a conventional example. 1, 17, 22... Capacitor, 2, 3, 7,
11, 13, 14, 18, 20, 21, 23, 2
4,27-30...Resistor, 4,12...Transistor, 5,16...Diode, 6...Supersaturation reactor, 8...Photothyristor light emitting section, 9...
...Chiyoke coil, 10, 26...Comparator, 15...Reference voltage, 19...Photothyristor light emitting section, 25...Thyristor.
Claims (1)
スタ発光部との直列回路を整流ダイオードに並列
に接続し、第２及び第３の抵抗とフオトサイリス
タ受光部との直列回路を入力端子に並列に接続し
、高電位側の前記第２の抵抗にＰＮＰ型トランジ
スタのベース及びエミツタを並列に接続し、かつ
前記トランジスタのコレクタをスイツチングトラ
ンジスタ駆動用コンパレータの非反転入力端子に
接続した過電流保護回路を備えることを特徴とす
る降圧型自励ＤＣ−ＤＣコンバータ。 A series circuit of a saturable reactor, a first resistor, and a photothyristor light emitting section is connected in parallel to a rectifier diode, and a series circuit of a second and third resistor and a photothyristor light receiving section is connected in parallel to an input terminal. , comprising an overcurrent protection circuit in which the base and emitter of a PNP transistor are connected in parallel to the second resistor on the high potential side, and the collector of the transistor is connected to a non-inverting input terminal of a switching transistor driving comparator. A step-down self-excited DC-DC converter characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9664790U JPH0454485U (en) | 1990-09-14 | 1990-09-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9664790U JPH0454485U (en) | 1990-09-14 | 1990-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0454485U true JPH0454485U (en) | 1992-05-11 |
Family
ID=31836346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9664790U Pending JPH0454485U (en) | 1990-09-14 | 1990-09-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100483396B1 (en) * | 1997-02-28 | 2005-06-16 | 산요덴키가부시키가이샤 | Voltage drop type dc-dc conventer |
-
1990
- 1990-09-14 JP JP9664790U patent/JPH0454485U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100483396B1 (en) * | 1997-02-28 | 2005-06-16 | 산요덴키가부시키가이샤 | Voltage drop type dc-dc conventer |
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