JPS6333384U - - Google Patents
Info
- Publication number
- JPS6333384U JPS6333384U JP12535686U JP12535686U JPS6333384U JP S6333384 U JPS6333384 U JP S6333384U JP 12535686 U JP12535686 U JP 12535686U JP 12535686 U JP12535686 U JP 12535686U JP S6333384 U JPS6333384 U JP S6333384U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- dividing resistor
- power supply
- output
- 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
- 230000010355 oscillation Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Dc-Dc Converters (AREA)
Description
第１図はこの考案の実施例である正電圧を出力
する出力電圧多段切換電源回路を表す。第２図は
第１図におけるスイツチング素子の他の例を表す
図、第３図はスイツチ制御回路のブロツク図、第
４図は負電圧を出力する電源回路の例を表す他の
実施例であり、第５図は第４図におけるスイツチ
ング素子の他の例を表す図である。第６図は従来
の電源回路の例を表す図である。
１……変圧器、２……発振回路、３……発振回
路の出力制御回路、４……コンパレータ（比較増
幅器）、Ｒａ〜Ｒｄ……抵抗、ＳＷａ〜ＳＷｄ…
…スイツチング素子、ＲＬ……負荷。
FIG. 1 shows an output voltage multi-stage switching power supply circuit that outputs a positive voltage, which is an embodiment of this invention. FIG. 2 is a diagram showing another example of the switching element in FIG. 1, FIG. 3 is a block diagram of a switch control circuit, and FIG. 4 is another embodiment showing an example of a power supply circuit that outputs a negative voltage. , FIG. 5 is a diagram showing another example of the switching element in FIG. 4. FIG. 6 is a diagram showing an example of a conventional power supply circuit. DESCRIPTION OF SYMBOLS 1... Transformer, 2... Oscillation circuit, 3... Output control circuit of the oscillation circuit, 4... Comparator (comparison amplifier), Ra to Rd... Resistance, SWa to SWd...
...Switching element, RL...Load.
Claims (1)
二次側の出力電圧を分圧する分圧抵抗を設け、前
記分圧抵抗によつて得られる分圧電圧と基準電圧
とを比較して前記発振回路の出力を制御するよう
にした電源回路において、 前記分圧抵抗を、スイツチング素子を直列に接
続した抵抗回路を複数個並列に接続して構成し、
各抵抗回路のスイツチング素子をオン・オフする
スイツチ制御回路を備えてなる出力電圧多段切換
電源回路。[Scope of claim for utility model registration] In addition to providing an oscillation circuit on the primary side of the transformer,
In a power supply circuit, a voltage dividing resistor is provided to divide the output voltage on the secondary side, and the output of the oscillation circuit is controlled by comparing the divided voltage obtained by the voltage dividing resistor with a reference voltage, The voltage dividing resistor is configured by connecting a plurality of resistance circuits in parallel with switching elements connected in series,
An output voltage multi-stage switching power supply circuit comprising a switch control circuit that turns on and off the switching elements of each resistance circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12535686U JPS6333384U (en) | 1986-08-15 | 1986-08-15 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12535686U JPS6333384U (en) | 1986-08-15 | 1986-08-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6333384U true JPS6333384U (en) | 1988-03-03 |
Family
ID=31018189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12535686U Pending JPS6333384U (en) | 1986-08-15 | 1986-08-15 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6333384U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01150486U (en) * | 1988-04-04 | 1989-10-18 | ||
| JP2007043863A (en) * | 2005-08-05 | 2007-02-15 | Hitachi Ltd | Electronic equipment |
-
1986
- 1986-08-15 JP JP12535686U patent/JPS6333384U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01150486U (en) * | 1988-04-04 | 1989-10-18 | ||
| JP2007043863A (en) * | 2005-08-05 | 2007-02-15 | Hitachi Ltd | Electronic equipment |
| JP4575859B2 (en) * | 2005-08-05 | 2010-11-04 | 株式会社日立製作所 | Electronic equipment |
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