JPS646152U - - Google Patents
Info
- Publication number
- JPS646152U JPS646152U JP9791487U JP9791487U JPS646152U JP S646152 U JPS646152 U JP S646152U JP 9791487 U JP9791487 U JP 9791487U JP 9791487 U JP9791487 U JP 9791487U JP S646152 U JPS646152 U JP S646152U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- current detection
- vehicle
- later
- equipment
- 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
- 238000001514 detection method Methods 0.000 claims description 11
- 230000035945 sensitivity Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
Landscapes
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
第１図乃至第４図はこの考案による実施例を示
し、第１図は電流検出回路の回路図、第２図イは
電流検出回路のスレツシヨルドレベルを切り換え
るための抵抗を内蔵したアダプタの回路図、第２
図ロは電流検出回路のスレツシヨルドレベルを切
り換えるための抵抗を内蔵し、更に、時計表示装
置付の純正ラジオ用の回路を付加したアダプタの
回路図、第３図は電流検出回路と純正ラジオと後
取り付けのカセツトデツキとパワーアンプとを組
み合せたブロツク図、第４図は電流検出回路のス
レツシヨルドレベルと純正ラジオの電源スイツチ
のオン・オフによる消費電流の変化との関係を示
すグラフ、第５図は従来の電流検出回路の回路図
、第６図は従来の電流検出回路のスレツシヨルド
レベルと純正ラジオの電源スイツチのオン・オフ
による消費電流の変化の関係を示すグラフである
。
１：電源検出回路、２：オペアンプ、３：リレ
ー、４：トランジスタ、５：接点回路、６，７，
８，９，１１，１２，１４，１５：抵抗、１０：
ダイオード、ＡＣＣ，ＴＵ―Ｂ，ＩＮ―Ｂ，ＡＭ
Ｐ―Ｂ，ＡＤ１，ＡＤ２，ＡＤ３：端子、Ａ，Ｂ
：アダプタ、ａｄ１，ａｄ２，ａｄ３：端子。
Figures 1 to 4 show embodiments of this invention. Figure 1 is a circuit diagram of a current detection circuit, and Figure 2A is an adapter with a built-in resistor for switching the threshold level of the current detection circuit. Circuit diagram, 2nd
Figure B is a circuit diagram of an adapter that has a built-in resistor for switching the threshold level of the current detection circuit, and a circuit for a genuine radio with a clock display device. Figure 3 shows the current detection circuit and the genuine radio. Figure 4 is a block diagram of a combination of a later-installed cassette deck and power amplifier. FIG. 5 is a circuit diagram of a conventional current detection circuit, and FIG. 6 is a graph showing the relationship between the threshold level of the conventional current detection circuit and the change in current consumption caused by turning on and off the power switch of a genuine radio. 1: Power supply detection circuit, 2: Operational amplifier, 3: Relay, 4: Transistor, 5: Contact circuit, 6, 7,
8, 9, 11, 12, 14, 15: resistance, 10:
Diode, ACC, TU-B, IN-B, AM
P-B, AD1, AD2, AD3: terminal, A, B
: adapter, ad1, ad2, ad3: terminal.
Claims (1)
あるカーステレオ等の車載用機器とからなる車載
用音響システムの電流検出回路であつて、 この電流検出回路を整流器と少なくとも２つの
抵抗器と検出感度を切り換えるための外部端子と
で構成し、前記純正ラジオの電源スイツチがオフ
のとき、後取り付けの車載用機器への電源供給が
遮断されるようにしたことを特徴とする車載用機
器の電流検出回路。[Scope of Claim for Utility Model Registration] A current detection circuit for an in-vehicle audio system consisting of a genuine radio installed in a vehicle and later-installed in-vehicle equipment such as a car stereo, which current detection circuit is used as a rectifier. It is characterized by comprising at least two resistors and an external terminal for switching detection sensitivity, so that when the power switch of the genuine radio is turned off, the power supply to the later installed in-vehicle equipment is cut off. Current detection circuit for automotive equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9791487U JPH075598Y2 (en) | 1987-06-27 | 1987-06-27 | In-vehicle equipment current detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9791487U JPH075598Y2 (en) | 1987-06-27 | 1987-06-27 | In-vehicle equipment current detection circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS646152U true JPS646152U (en) | 1989-01-13 |
| JPH075598Y2 JPH075598Y2 (en) | 1995-02-08 |
Family
ID=31323716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9791487U Expired - Lifetime JPH075598Y2 (en) | 1987-06-27 | 1987-06-27 | In-vehicle equipment current detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH075598Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007278954A (en) * | 2006-04-11 | 2007-10-25 | Alpine Electronics Inc | Consumed current measuring device |
-
1987
- 1987-06-27 JP JP9791487U patent/JPH075598Y2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007278954A (en) * | 2006-04-11 | 2007-10-25 | Alpine Electronics Inc | Consumed current measuring device |
| JP4623521B2 (en) * | 2006-04-11 | 2011-02-02 | アルパイン株式会社 | Current consumption measuring device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH075598Y2 (en) | 1995-02-08 |
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