JPS62191384U - - Google Patents
Info
- Publication number
- JPS62191384U JPS62191384U JP8033286U JP8033286U JPS62191384U JP S62191384 U JPS62191384 U JP S62191384U JP 8033286 U JP8033286 U JP 8033286U JP 8033286 U JP8033286 U JP 8033286U JP S62191384 U JPS62191384 U JP S62191384U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- output
- comparator
- error amplifier
- input
- 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 7
- 239000003990 capacitor Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
- Protection Of Static Devices (AREA)
Description
第１図は本考案の実施例に係る変圧チヨツパ回
路の回路図、第２図は第１図に示した回路の動作
説明図、第３図は従来の変圧チヨツパ回路の回路
図、第４図Ａ，Ｂは第３図に示した従来回路のト
ランジスタＴＲのコレクタ電圧波形図及びダイオ
ードＤのアノード電圧波形図、第５図Ａ，Ｂ，Ｃ
は第３図に示した従来回路においてトランスＴの
巻数値を変えたときのアノード電圧波形図である
。
ＴＲ……トランジスタ、Ｔ……トランス、Ｄ…
…ダイオード、Ｃ……コンデンサ、ＶＲ……誤差
検出抵抗、Ａｍｐ……誤差増幅器、Ｃｏｍｐ……
比較器、Ｖｒｅｆ……基準電圧、ＯＳＣ……発振
器、Ｒ１，Ｒ２……分圧抵抗。
Figure 1 is a circuit diagram of a transformer chopper circuit according to an embodiment of the present invention, Figure 2 is an explanatory diagram of the operation of the circuit shown in Figure 1, Figure 3 is a circuit diagram of a conventional transformer chopper circuit, and Figure 4 is a circuit diagram of a transformer chopper circuit according to an embodiment of the present invention. A and B are the collector voltage waveform diagram of the transistor TR and the anode voltage waveform diagram of the diode D in the conventional circuit shown in Fig. 3, and Fig. 5 A, B, and C
is an anode voltage waveform diagram when the winding number of the transformer T is changed in the conventional circuit shown in FIG. 3. TR...transistor, T...transformer, D...
...Diode, C...Capacitor, VR...Error detection resistor, Amp...Error amplifier, Comp...
Comparator, Vref... reference voltage, OSC... oscillator, R1, R2... voltage dividing resistance.
Claims (1)
る誤差増幅器と、前記誤差増幅器の出力を一方の
入力にまた比較基準波を他方の入力に与えられる
比較器とをスイツチング素子の制御系として含み
、前記比較器の出力に基づいて前記スイツチング
素子を開閉制御することにより安定化された任意
の直流出力電圧を得る変圧チヨツパ回路において
、 前記誤差増幅器が飽和電圧を出力するときに、
この飽和電圧に基づく前記比較器への入力電圧が
、前記比較基準波のピーク電圧よりも低くなるよ
うな分圧抵抗を、前記誤差増幅器と前記比較器と
の間に介在させたことを特徴とする変圧チヨツパ
回路。[Claims for Utility Model Registration] An error amplifier that provides an error output between a stabilized output voltage and a reference voltage, and a comparator that receives the output of the error amplifier to one input and a comparison reference wave to the other input. In a transformer chopper circuit that is included as a control system for a switching element and obtains a stabilized arbitrary DC output voltage by controlling opening and closing of the switching element based on the output of the comparator, the error amplifier outputs a saturation voltage. sometimes,
A voltage dividing resistor is interposed between the error amplifier and the comparator so that the input voltage to the comparator based on this saturation voltage is lower than the peak voltage of the comparison reference wave. transformer circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8033286U JPS62191384U (en) | 1986-05-27 | 1986-05-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8033286U JPS62191384U (en) | 1986-05-27 | 1986-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62191384U true JPS62191384U (en) | 1987-12-05 |
Family
ID=30931044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8033286U Pending JPS62191384U (en) | 1986-05-27 | 1986-05-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62191384U (en) |
-
1986
- 1986-05-27 JP JP8033286U patent/JPS62191384U/ja active Pending
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