JPH0386743U - - Google Patents
Info
- Publication number
- JPH0386743U JPH0386743U JP14652189U JP14652189U JPH0386743U JP H0386743 U JPH0386743 U JP H0386743U JP 14652189 U JP14652189 U JP 14652189U JP 14652189 U JP14652189 U JP 14652189U JP H0386743 U JPH0386743 U JP H0386743U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- voltage
- supply circuit
- power
- 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.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Television Receiver Circuits (AREA)
- Transforming Electric Information Into Light Information (AREA)
- Stand-By Power Supply Arrangements (AREA)
Description
第１図は本考案に係る電池充電回路の一実施例
を示す構成図、第２図は従来の電池充電回路を示
す構成図である。
２１……筐体、２２……ＤＣジヤツク、２３…
…電池ケース、２４……雄端子、２５……接点ば
ね、２７，２８，３０，３１……入力端子、２９
……電池、３２……端子、３３……接点、３４…
…メイン電源回路、３５……インバータ回路、３
６……音声電源回路、４１，４４……スイツチ、
４２……スタンバイ電源、４３……マイコン、４
５……メイン電源オン／オフ回路、４６……イン
バータオン／オフ回路、５１……第１の電源入力
部、５２……第２の電源入力部。
FIG. 1 is a block diagram showing an embodiment of a battery charging circuit according to the present invention, and FIG. 2 is a block diagram showing a conventional battery charging circuit. 21... Housing, 22... DC jack, 23...
...Battery case, 24...Male terminal, 25...Contact spring, 27, 28, 30, 31...Input terminal, 29
...Battery, 32...Terminal, 33...Contact, 34...
...Main power supply circuit, 35...Inverter circuit, 3
6...Audio power supply circuit, 41, 44...Switch,
42...Standby power supply, 43...Microcomputer, 4
5... Main power on/off circuit, 46... Inverter on/off circuit, 51... First power input section, 52... Second power input section.
Claims (1)
回路であつて、 第１、第２の電源入力部を有し、第１の電源入
力部には電池からの第１の直流電圧を供給可能と
し、第２の電源入力部には前記電池以外の電源か
らの第２の直流電圧を供給可能とし、第２の電源
入力部から第２の直流電圧が供給されているとき
には第１の電源入力部への第１の直流電圧の供給
を阻止するように構成した電源供給手段と、 前記電源供給手段からの第１の直流電圧又は第
２の直流電圧が与えられて第１の電源電圧を発生
し、選局部、映像受信部、映像処理部及び液晶パ
ネルに電源を供給するメイン電源回路と、 前記電源供給手段からの第１の直流電圧又は第
２の直流電圧が与えられて第２の電源電圧を発生
し、音声処理部及び音響装置に電源を供給する音
声電源回路と、 前記電源供給手段からの第１の直流電圧又は第
２の直流電圧が与えられて第３の電源電圧を発生
し、バツクライトの駆動装置に供給するバツクラ
イト用電源回路と、 前記電源供給手段からの第１の直流電圧又は第
２の直流電圧が与えられて定電圧を発生するスタ
ンバイ電源回路と、 前記メイン電源回路、音声電源回路及びバツク
ライト用電源回路をオン／オフ制御するものであ
つて、前記スタンバイ電源回路からの定電圧が電
源として第１の入力端子に入力されると共に制御
信号として第２の入力端子に入力され、第２の入
力端子に制御信号が入力されないときには前記メ
イン電源回路、前記音声電源回路、前記バツクラ
イト用電源回路をオンし、第２の入力端子に制御
信号か入力されたときには、前記バツクライト用
電源回路のみをオフする制御回路と、 前記スタンバイ電源回路に直流電圧を供給する
経路に設けられ、この直流電圧の供給をオン／オ
フする第１のスイツチと、 前記制御回路の第２の入力端子にスタンバイ電
源回路からの定電圧を供給する経路に設けられ、
制御信号の供給をオン／オフする第２のスイツチ
と、 前記第２の電源入力部に電源が供給されている
ときに、前記第１の電源入力部の電池を充電する
経路を形成するためのスイツチであつて、前記電
池の一端と基準電位点の間にコレクタ・エミツタ
路を接続し、ベースには、前記スタンバイ電源回
路からの電圧が前記第２のスイツチを介して供給
可能とされ、前記第２のスイツチがオンしたとき
にコレクタ・エミツタ間をオンして、前記電池を
充電する経路を形成するトランジスタとを具備し
たことを特徴とする電池充電回路。[Claims for Utility Model Registration] A battery charging circuit built into a liquid crystal television receiver, which has a first power input section and a second power input section, and the first power input section receives a first power supply from the battery. A second DC voltage can be supplied from a power source other than the battery to the second power input section, and the second DC voltage is supplied from the second power input section. A power supply means configured to sometimes block the supply of the first DC voltage to the first power supply input section; a main power supply circuit that generates a power supply voltage of 1 and supplies power to a channel selection unit, a video reception unit, a video processing unit, and a liquid crystal panel; and a main power supply circuit that generates a first DC voltage or a second DC voltage from the power supply means an audio power supply circuit that generates a second power supply voltage and supplies power to the audio processing unit and the audio device; a backlight power supply circuit that generates a power supply voltage and supplies it to the backlight drive device; and a standby power supply circuit that generates a constant voltage by being supplied with the first DC voltage or the second DC voltage from the power supply means. , which controls on/off the main power supply circuit, the audio power supply circuit, and the backlight power supply circuit, wherein a constant voltage from the standby power supply circuit is inputted as a power source to a first input terminal, and a first input terminal is inputted as a control signal. When the control signal is not input to the second input terminal, the main power supply circuit, the audio power supply circuit, and the backlight power supply circuit are turned on, and the control signal is input to the second input terminal. a control circuit that turns off only the backlight power supply circuit when the standby power supply circuit is turned off; a first switch that is provided in a path for supplying DC voltage to the standby power supply circuit and turns on/off the supply of the DC voltage; and the control circuit. provided in a path for supplying constant voltage from the standby power supply circuit to the second input terminal of the
a second switch for turning on/off the supply of a control signal; and a second switch for forming a path for charging the battery of the first power input section when power is being supplied to the second power input section. a switch, wherein a collector-emitter path is connected between one end of the battery and a reference potential point, a voltage from the standby power supply circuit can be supplied to the base via the second switch; A battery charging circuit comprising: a transistor that turns on a collector-emitter when a second switch is turned on to form a path for charging the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14652189U JPH087787Y2 (en) | 1989-12-21 | 1989-12-21 | Battery charging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14652189U JPH087787Y2 (en) | 1989-12-21 | 1989-12-21 | Battery charging circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0386743U true JPH0386743U (en) | 1991-09-03 |
| JPH087787Y2 JPH087787Y2 (en) | 1996-03-04 |
Family
ID=31693096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14652189U Expired - Lifetime JPH087787Y2 (en) | 1989-12-21 | 1989-12-21 | Battery charging circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH087787Y2 (en) |
-
1989
- 1989-12-21 JP JP14652189U patent/JPH087787Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH087787Y2 (en) | 1996-03-04 |
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