JPH0428787U - - Google Patents
Info
- Publication number
- JPH0428787U JPH0428787U JP6941290U JP6941290U JPH0428787U JP H0428787 U JPH0428787 U JP H0428787U JP 6941290 U JP6941290 U JP 6941290U JP 6941290 U JP6941290 U JP 6941290U JP H0428787 U JPH0428787 U JP H0428787U
- Authority
- JP
- Japan
- Prior art keywords
- regulator
- controls
- base current
- voltage
- power supply
- 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 description 4
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Electrical Variables (AREA)
- Dc-Dc Converters (AREA)
Description
第１図はこの考案の一実施例によるスイツチン
グ電源の回路図、第２図は従来のエミツタチヨツ
パー式スイツチング電源の回路図である。
図において、１は商用交流電源、２はブリツジ
ダイオード、３は電源整流コンデンサ、４はレギ
ユレータＩＣ、５は起動抵抗、６はスイツチング
トランス、７は出力整流コンデンサ、８は負荷、
９はベースコンデンサ、１０はベース抵抗、１１
は発振器、１２はトリガートランス、１３はトリ
ガーダイオード、１４はフライホイールダイオー
ド、１５は制御電圧整流ダイオード、１６は制御
電圧整流コンデンサ、１７はヒステリシス電圧判
別回路である。なお図中同一符号は同一又は相当
部分を示す。
FIG. 1 is a circuit diagram of a switching power supply according to an embodiment of this invention, and FIG. 2 is a circuit diagram of a conventional emitter stopper type switching power supply. In the figure, 1 is a commercial AC power supply, 2 is a bridge diode, 3 is a power rectifier capacitor, 4 is a regulator IC, 5 is a starting resistor, 6 is a switching transformer, 7 is an output rectifier capacitor, 8 is a load,
9 is the base capacitor, 10 is the base resistor, 11
12 is an oscillator, 12 is a trigger transformer, 13 is a trigger diode, 14 is a flywheel diode, 15 is a control voltage rectifier diode, 16 is a control voltage rectifier capacitor, and 17 is a hysteresis voltage discrimination circuit. Note that the same reference numerals in the figures indicate the same or equivalent parts.
Claims (1)
一定に制御するスイツチング電源において、 上記レギユレータＩＣのベース電流を制御する
制御電圧の低下を判別する、ヒステリシスをもつ
電圧判別回路と、 該電圧判別回路の出力に基づいて、上記レギユ
レータＩＣのベース電流を制御するベース電流制
御回路とを備えたことを特徴とするスイツチング
電源。[Claims for Utility Model Registration] In a switching power supply that includes a regulator IC and controls the voltage applied to a load at a constant level, a voltage discrimination circuit with hysteresis that discriminates a drop in the control voltage that controls the base current of the regulator IC. and a base current control circuit that controls the base current of the regulator IC based on the output of the voltage discrimination circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6941290U JPH0428787U (en) | 1990-06-28 | 1990-06-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6941290U JPH0428787U (en) | 1990-06-28 | 1990-06-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0428787U true JPH0428787U (en) | 1992-03-06 |
Family
ID=31604693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6941290U Pending JPH0428787U (en) | 1990-06-28 | 1990-06-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0428787U (en) |
-
1990
- 1990-06-28 JP JP6941290U patent/JPH0428787U/ja active Pending
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