JPH0397387U - - Google Patents
Info
- Publication number
- JPH0397387U JPH0397387U JP310090U JP310090U JPH0397387U JP H0397387 U JPH0397387 U JP H0397387U JP 310090 U JP310090 U JP 310090U JP 310090 U JP310090 U JP 310090U JP H0397387 U JPH0397387 U JP H0397387U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- voltage
- resonant power
- supply section
- rectifier 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
- 238000001514 detection method Methods 0.000 claims description 3
- 230000000087 stabilizing effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 238000004804 winding Methods 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図は本考案による定電圧電源回路の一実施
例を示す回路図、第２図は第１図の定電圧電源回
路の動作を説明するための動作波形図、第３図は
この定電圧電源回路の動作特性を示す特性図、第
４図は従来の電源回路の回路図である。
１……変圧器、２……第１の整流回路、３……
定電圧回路、４……共振型電源部、５，６……負
荷、７……第２の整流回路、８……誤差増幅器、
９……出力電圧安定化回路、Ｃ１……コンデンサ
、Ｅ０……基準電圧源、Ｌ１……インダクタ、Ｑ
１，Ｑ２……スイツチングトランジスタ、Ｑ３…
…制御トランジスタ、Ｒ１，Ｒ２……抵抗、ＲＡ
，ＲＢ……検出用抵抗、Ｔ……コンバータトラン
ス、Ｔ１……一次巻線、Ｔ２……二次巻線、ＴＢ
……ベース巻線。
Fig. 1 is a circuit diagram showing an embodiment of the constant voltage power supply circuit according to the present invention, Fig. 2 is an operation waveform diagram for explaining the operation of the constant voltage power supply circuit of Fig. 1, and Fig. 3 is a circuit diagram showing the constant voltage power supply circuit according to the present invention. A characteristic diagram showing the operating characteristics of the power supply circuit, FIG. 4 is a circuit diagram of a conventional power supply circuit. 1...Transformer, 2...First rectifier circuit, 3...
Constant voltage circuit, 4... Resonant power supply unit, 5, 6... Load, 7... Second rectifier circuit, 8... Error amplifier,
9...Output voltage stabilization circuit, C1 ...Capacitor, E0 ...Reference voltage source, L1 ...Inductor, Q
1 , Q 2 ... switching transistor, Q 3 ...
...control transistor, R 1 , R 2 ...resistance, RA
, RB...Detection resistor, T...Converter transformer, T1 ...Primary winding, T2 ...Secondary winding, TB
...Base winding.
Claims (1)
１の整流回路の直流出力をスイツチング素子によ
り自励的にスイツチングしてコンバータトランス
に供給して交流に変換し、その後再び第２の整流
回路により直流に変換して出力する共振型電源部
とを有する電源回路において、 上記共振型電源部の入力端子に直列に接続され
上記第１の整流回路の直流出力を該共振電源部に
供給する制御素子と、上記共振型電源部の直流出
力電圧を検出する電圧検出手段と、この電圧検出
手段の検出電圧と基準電圧とを比較し誤差電圧を
増幅して上記制御素子の制御入力端子に供給する
誤差増幅器とを備え、 上記共振型電源部の入力端子に加えられる入力
電圧を該共振型電源部の直流出力電圧の変動に応
じて上記制御素子により変化させ、該直流出力電
圧を安定化することを特徴とする定電圧電源回路
。[Claims for Utility Model Registration] A first rectifier circuit that rectifies an AC power source, and a DC output of the first rectifier circuit that is self-excited by a switching element and supplied to a converter transformer to convert it into AC. , and then a second rectifier circuit converts the direct current into direct current and outputs the resultant resonant power supply circuit. A control element supplied to the resonant power supply section, a voltage detection means for detecting the DC output voltage of the resonant power supply section, and a voltage detected by the voltage detection means and a reference voltage are compared and an error voltage is amplified to perform the above control. an error amplifier supplied to a control input terminal of the element, the input voltage applied to the input terminal of the resonant power supply section is varied by the control element in accordance with fluctuations in the DC output voltage of the resonant power supply section; A constant voltage power supply circuit characterized by stabilizing the DC output voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP310090U JPH0397387U (en) | 1990-01-19 | 1990-01-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP310090U JPH0397387U (en) | 1990-01-19 | 1990-01-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0397387U true JPH0397387U (en) | 1991-10-07 |
Family
ID=31506940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP310090U Pending JPH0397387U (en) | 1990-01-19 | 1990-01-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0397387U (en) |
-
1990
- 1990-01-19 JP JP310090U patent/JPH0397387U/ja active Pending
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