JPS63153781U - - Google Patents
Info
- Publication number
- JPS63153781U JPS63153781U JP4536387U JP4536387U JPS63153781U JP S63153781 U JPS63153781 U JP S63153781U JP 4536387 U JP4536387 U JP 4536387U JP 4536387 U JP4536387 U JP 4536387U JP S63153781 U JPS63153781 U JP S63153781U
- Authority
- JP
- Japan
- Prior art keywords
- switching element
- output voltage
- semiconductor switching
- converter
- multivibrator
- 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
- 239000004065 semiconductor Substances 0.000 claims 2
- 230000010355 oscillation Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Description
第１図は本考案の一実施例を示す回路図、第２
図は該実施例の動作を説明するための波形図、第
３図は該実施例におけるコイルに流れる電流波形
図である。
１……バツテリ、２……ナンドゲート、３……
出力パルス端子、４……非安定マルチバイブレー
タ、５……ステツプアツプコンバータ。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a waveform diagram for explaining the operation of the embodiment, and FIG. 3 is a waveform diagram of the current flowing through the coil in the embodiment. 1... Batsuteri, 2... Nand Gate, 3...
Output pulse terminal, 4...unstable multivibrator, 5...step-up converter.
Claims (1)
体スイツチング素子とを含む非安定マルチバイブ
レータと、コイルを含むステツプアツプコンバー
タとを具備し、前記半導体スイツチング素子の内
部抵抗を、前記非安定マルチバイブレータの出力
電圧と前記ステツプアツプコンバータの出力電圧
との電圧差によつて変化させることにより前記非
安定マルチバイブレータのデユーテイサイクルを
可変としたことを特徴とする直流昇圧回路。 It comprises an astable multivibrator including a variable resistor and a semiconductor switching element for determining an oscillation time constant, and a step-up converter including a coil, and the internal resistance of the semiconductor switching element is adjusted to A DC step-up circuit characterized in that the duty cycle of the unstable multivibrator is made variable by changing it according to the voltage difference between the output voltage and the output voltage of the step-up converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4536387U JPS63153781U (en) | 1987-03-27 | 1987-03-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4536387U JPS63153781U (en) | 1987-03-27 | 1987-03-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63153781U true JPS63153781U (en) | 1988-10-07 |
Family
ID=30864036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4536387U Pending JPS63153781U (en) | 1987-03-27 | 1987-03-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63153781U (en) |
-
1987
- 1987-03-27 JP JP4536387U patent/JPS63153781U/ja active Pending
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