JPH0273826U - - Google Patents
Info
- Publication number
- JPH0273826U JPH0273826U JP15181588U JP15181588U JPH0273826U JP H0273826 U JPH0273826 U JP H0273826U JP 15181588 U JP15181588 U JP 15181588U JP 15181588 U JP15181588 U JP 15181588U JP H0273826 U JPH0273826 U JP H0273826U
- Authority
- JP
- Japan
- Prior art keywords
- current source
- constant current
- capacitor
- circuit
- level shifting
- 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
- 239000003990 capacitor Substances 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 6
Landscapes
- Manipulation Of Pulses (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Pulse Circuits (AREA)
Description
第１図は本考案の一実施例の回路図、第２図は
本考案の一実施例の動作を説明するための図、第
３図は従来の一例の回路図、第４図は従来の一例
を説明するための図、第５図〜第９図は従来の一
例の要部を説明するための図、第１０図は従来の
他の一例の回路図である。
１……のこぎり波発振回路、２……パルス信号
発振回路、３……微分回路、４……定電流源、５
……コンパレータ、Ｃ２……コンデンサ、Ｒ２…
…抵抗、Ｔｒ……トランジスタ、Ｑ……接続点。
Fig. 1 is a circuit diagram of an embodiment of the present invention, Fig. 2 is a diagram for explaining the operation of an embodiment of the invention, Fig. 3 is a circuit diagram of a conventional example, and Fig. 4 is a circuit diagram of a conventional example. FIGS. 5 to 9 are diagrams for explaining main parts of a conventional example, and FIG. 10 is a circuit diagram of another conventional example. 1... Sawtooth oscillation circuit, 2... Pulse signal oscillation circuit, 3... Differential circuit, 4... Constant current source, 5
... Comparator, C 2 ... Capacitor, R 2 ...
...Resistor, Tr...transistor, Q...connection point.
Claims (1)
ツチング回路を設け、前記スイツチング回路をオ
ン／オフすることにより前記コンデンサを充放電
させて傾斜波を得る発振回路において、 前記コンデンサと前記定電流源との間にレベル
シフト用回路素子を設け、前記レベルシフト用回
路素子と前記定電流源との接続点から出力を取り
出す構成とした発振回路。[Claims for Utility Model Registration] In an oscillation circuit that provides a switching circuit at both ends of a capacitor connected to a constant current source, and charges and discharges the capacitor by turning on/off the switching circuit to obtain a slope wave, An oscillation circuit having a structure in which a level shifting circuit element is provided between a capacitor and the constant current source, and an output is taken out from a connection point between the level shifting circuit element and the constant current source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15181588U JPH0273826U (en) | 1988-11-24 | 1988-11-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15181588U JPH0273826U (en) | 1988-11-24 | 1988-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0273826U true JPH0273826U (en) | 1990-06-06 |
Family
ID=31426194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15181588U Pending JPH0273826U (en) | 1988-11-24 | 1988-11-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0273826U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009110289A1 (en) * | 2008-03-07 | 2009-09-11 | Ricoh Company, Ltd. | Current mode control type switching regulator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5816931B2 (en) * | 1974-10-25 | 1983-04-04 | アトランテイツク リツチフイ−ルド カンパニ− | You can use Bunpai Souchi |
| JPS60167506A (en) * | 1984-02-10 | 1985-08-30 | Matsushita Electric Ind Co Ltd | Switch amplifier of high efficiency |
-
1988
- 1988-11-24 JP JP15181588U patent/JPH0273826U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5816931B2 (en) * | 1974-10-25 | 1983-04-04 | アトランテイツク リツチフイ−ルド カンパニ− | You can use Bunpai Souchi |
| JPS60167506A (en) * | 1984-02-10 | 1985-08-30 | Matsushita Electric Ind Co Ltd | Switch amplifier of high efficiency |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009110289A1 (en) * | 2008-03-07 | 2009-09-11 | Ricoh Company, Ltd. | Current mode control type switching regulator |
| JP2009219179A (en) * | 2008-03-07 | 2009-09-24 | Ricoh Co Ltd | Current mode control type switching regulator |
| CN101682256A (en) * | 2008-03-07 | 2010-03-24 | 株式会社理光 | Current mode control type switching regulator |
| KR101131262B1 (en) * | 2008-03-07 | 2012-04-12 | 가부시키가이샤 리코 | Current mode control type switching regulator |
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