JPH0193985U - - Google Patents
Info
- Publication number
- JPH0193985U JPH0193985U JP18722187U JP18722187U JPH0193985U JP H0193985 U JPH0193985 U JP H0193985U JP 18722187 U JP18722187 U JP 18722187U JP 18722187 U JP18722187 U JP 18722187U JP H0193985 U JPH0193985 U JP H0193985U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- remote control
- secondary side
- frequency
- stabilized
- 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
- 238000004804 winding Methods 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Dc-Dc Converters (AREA)
- Selective Calling Equipment (AREA)
Description
第１図は本考案に係る絶縁型スイツチング式電
源回路を説明する説明図、第２図は第１図の帯域
フイルタ特性を示す特性図、第３図は本考案の一
実施例を示す回路図、第４図は従来の絶縁型スイ
ツチング式電源回路を説明する説明図、第５図は
従来の電源回路でスイツチングノイズがリモコン
回路に与える影響を説明する説明図である。
１１……テレビジヨン受像機、１３……ノイズ
源、１４……リモコン受光器、１８……帯域フイ
ルタ、２４……コンバータトランス。
Fig. 1 is an explanatory diagram illustrating an isolated switching type power supply circuit according to the present invention, Fig. 2 is a characteristic diagram showing the band filter characteristics of Fig. 1, and Fig. 3 is a circuit diagram showing an embodiment of the present invention. , FIG. 4 is an explanatory diagram illustrating a conventional isolated switching type power supply circuit, and FIG. 5 is an explanatory diagram illustrating the influence of switching noise on a remote control circuit in a conventional power supply circuit. 11...Television receiver, 13...Noise source, 14...Remote control receiver, 18...Band filter, 24...Converter transformer.
Claims (1)
リモコン受信回路を有し、リモートコントロール
可能な電気機器と、 この電気機器の直流電源であつて、交流電源電
圧を整流して得られる直流電圧をコンバータトラ
ンスの１次側に供給しスイツチングトランジスタ
をオン、オフして交流に変換し、２次側巻線に得
られる電圧を整流して２次側直流電圧を得、しか
も検出巻線にて２次側直流電圧の変動を検出し基
準値との誤差を得、その誤差信号に基づいて前記
スイツチングトランジスタのスイツチング信号の
周波数又はデユーテイ比を制御し２次側直流電圧
を安定化する安定化電源と、 この安定化電源の前記コンバータトランスの１
次側、２次側間に設けられ、前記リモコン信号の
キヤリア周波数と同じ同調点を有し該周波数で低
インピーダンスとなる特性を有した帯域フイルタ
とを具備したことを特徴とする絶縁型スイツチン
グ式電源回路。[Scope of Claim for Utility Model Registration] An electric appliance that has a remote control receiving circuit that receives a remote control signal from a remote control transmitter and can be remotely controlled, and a DC power source for this electric appliance that rectifies the AC power voltage. The obtained DC voltage is supplied to the primary side of the converter transformer, the switching transistor is turned on and off to convert it to AC, and the voltage obtained at the secondary winding is rectified to obtain the secondary side DC voltage. A detection winding detects fluctuations in the secondary side DC voltage to obtain an error from a reference value, and based on the error signal, controls the frequency or duty ratio of the switching signal of the switching transistor to adjust the secondary side DC voltage. A stabilized power supply to be stabilized, and one of the converter transformers of this stabilized power supply.
An isolated switching type characterized in that it is provided between the next side and the secondary side, and has a bandpass filter having the same tuning point as the carrier frequency of the remote control signal and having a characteristic of low impedance at that frequency. power circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18722187U JPH0193985U (en) | 1987-12-10 | 1987-12-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18722187U JPH0193985U (en) | 1987-12-10 | 1987-12-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0193985U true JPH0193985U (en) | 1989-06-21 |
Family
ID=31478388
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18722187U Pending JPH0193985U (en) | 1987-12-10 | 1987-12-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0193985U (en) |
-
1987
- 1987-12-10 JP JP18722187U patent/JPH0193985U/ja active Pending
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