JPH0517723U - Switching circuit - Google Patents
Switching circuitInfo
- Publication number
- JPH0517723U JPH0517723U JP6285291U JP6285291U JPH0517723U JP H0517723 U JPH0517723 U JP H0517723U JP 6285291 U JP6285291 U JP 6285291U JP 6285291 U JP6285291 U JP 6285291U JP H0517723 U JPH0517723 U JP H0517723U
- Authority
- JP
- Japan
- Prior art keywords
- switching
- diode
- signal
- power supply
- switching 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
Abstract
(57)【要約】
【目的】 本考案は、１個の４０６６系の切換ＩＣで４
種類の信号を切り換え可能な回路を提供しようとするも
のである。
【構成】 ２個のダイオードのカソードと１個の電源平
滑コンデンサーを切換ＩＣの電源に接続し、一方のダイ
オードのアノードをＩＣのＳＷがＯＦＦの時に切れる１
２Ｖ、もう一方のダイオードのアノードをＩＣがＯＦＦ
の時も切れない５Ｖにし、上記効果を有する。
(57) [Abstract] [Purpose] The present invention is one switching IC of 4066 system,
An object of the present invention is to provide a circuit capable of switching types of signals. [Structure] The cathodes of two diodes and one power supply smoothing capacitor are connected to the power supply of the switching IC, and the anode of one diode is cut off when the SW of the IC is OFF.
2V, IC turns off the anode of the other diode
Even at the time of, it is set to 5V which does not turn off, and the above effect is obtained.
Description
【０００１】[0001]
本考案は切換回路の電源に関するものであり、特に改良された電源供給に関す るものである。 The present invention relates to a switching circuit power supply, and more particularly to an improved power supply.
【０００２】[0002]
図２は、従来の切換回路の回路図を示すものであり、１は信号を切換える切換 集積回路（以下、ＩＣと呼ぶ。）、２は切換ＩＣ１による切換えを制御する切換 信号、３は切換えられる信号である。また４は切換えられた信号である。以上の ように構成された従来の切換回路において、２が”ＨＩ”の時３の信号は４に出 力され、２が”ＬＯ”の時３の信号は４に出力されない。 FIG. 2 shows a circuit diagram of a conventional switching circuit, in which 1 is a switching integrated circuit (hereinafter referred to as IC) for switching signals, 2 is a switching signal for controlling switching by the switching IC 1, and 3 is switching. It is a signal. Reference numeral 4 is a switched signal. In the conventional switching circuit configured as described above, the signal of 3 is output to 4 when 2 is "HI", and the signal of 3 is not output to 4 when 2 is "LO".
【０００３】[0003]
しかしながら前期のような構成では、ＩＣのＯＮ抵抗がその電源電圧により決 定される為、５Ｖ（通常のマイコンの電源電圧）で信号を切り替える時にはＳＷ を図２のように２回路使用している。従って、４種類の信号を切り替えるために はＩＣが２個必要であるという問題点を有していた。本考案はかかる点に鑑み、 １個のＩＣで４種類の信号を切替えられる回路を提供することを目的とする。 However, in the configuration as in the previous term, the ON resistance of the IC is determined by its power supply voltage, so when switching signals at 5V (normal microcomputer power supply voltage), two SW circuits are used as shown in FIG. .. Therefore, there is a problem that two ICs are required to switch four kinds of signals. In view of such a point, the present invention aims to provide a circuit capable of switching four types of signals with one IC.
【０００４】[0004]
上記問題点を解決するために、本考案の切換回路は切換ＩＣの電源に２個のダ イオードと１個のコンデンサーを有し、１個のダイオードより５Ｖ、１個のダイ オードより１２Ｖを供給することによりＳＷがＯＮの時はＩＣの電源は１２Ｖよ り供給しＩＣのＯＮ抵抗を小さくし、ＳＷがＯＦＦの時は１２Ｖが切れ５Ｖより 供給することにより、１個のＩＣで４種類の信号を切り替えるものである。 In order to solve the above problems, the switching circuit of the present invention has two diodes and one capacitor as the power source of the switching IC, and supplies 5V from one diode and 12V from one diode. By doing so, when the SW is ON, the power of the IC is supplied from 12V and the ON resistance of the IC is reduced, and when the SW is OFF, 12V is cut off and supplied from 5V. The signal is switched.
【０００５】[0005]
本考案は前記した構成により、ＳＷがＯＮの時はＩＣの電源は１２ｖより供給 され、ＩＣのＯＮ抵抗は小さく、１個のＳＷで１種の信号が切替えられ、ＳＷが ＯＦＦの時は、１２Ｖは切れるが５Ｖより電圧を供給しＩＣの電源電圧を確保す るものである。 The present invention has the above-described structure, the power of the IC is supplied from 12v when the SW is ON, the ON resistance of the IC is small, and one SW switches one kind of signal, and when the SW is OFF, 12V is cut off, but a voltage is supplied from 5V to secure the power supply voltage of the IC.
【０００６】[0006]
図１は本考案の一実施例における切換回路の回路図を示すものである。 FIG. 1 is a circuit diagram of a switching circuit according to an embodiment of the present invention.
【０００７】 図１において、１１は信号を切換える切換ＩＣ、１２は切換えＩＣ１１による 切換えを制御する切換信号、１３は切替えられる信号である。また、１４は切替 えられた信号、１５は１２Ｖの供給用ダイオード、１６は５Ｖ供給用ダイオード 、１７は電源平滑コンデンサーである。以上のように構成されたこの実施例の切 換回路において、以下その動作を説明する。In FIG. 1, 11 is a switching IC for switching signals, 12 is a switching signal for controlling switching by the switching IC 11, and 13 is a signal to be switched. Further, 14 is a switched signal, 15 is a 12V supply diode, 16 is a 5V supply diode, and 17 is a power supply smoothing capacitor. The operation of the switching circuit of this embodiment constructed as above will be described below.
【０００８】 切換信号１２が”Ｈ１”の時 、切換ＩＣ１１はＯＮするがその時の切換ＩＣ の電源にはダイオード１５より１２Ｖが供給されダイオード１６はＯＦＦである 、従ってＩＣのＯＮ抵抗は小さく４種類の信号１３はＳＷにより信号１４として 出力される。When the switching signal 12 is “H1”, the switching IC 11 is turned on, but 12 V is supplied from the diode 15 to the power source of the switching IC at that time and the diode 16 is turned off. Therefore, the ON resistance of the IC is small and 4 types. The signal 13 is output as a signal 14 by the SW.
【０００９】 切換信号１２が”ＬＯ”の時、切換ＩＣ１１はＯＦＦするがその時の切換ＩＣ の電源には１２Ｖが切れる為ダイオード１６より５Ｖが供給されダイオード１５ はＯＦＦである、この時ＳＷはＯＦＦでありＩＣのＯＮ抵抗は影響しない。When the switching signal 12 is “LO”, the switching IC 11 is turned off, but since 12 V is cut off to the power source of the switching IC at that time, 5 V is supplied from the diode 16 and the diode 15 is off. At this time, the SW is off. Therefore, the ON resistance of the IC has no effect.
【００１０】 以上のようにこの実施例によれば、２個のダイオードと１個のコンデンサー切 換ＩＣの電源に設けることにより、１個の切換ＩＣで４種類の信号を低インピー ダンスで切り替えることができる。As described above, according to this embodiment, by providing two diodes and one capacitor switching IC as a power source, one switching IC can switch four types of signals with low impedance. You can
【００１１】[0011]
以上のように本考案は簡単な回路構成１個の切換ＩＣで４種類の信号を低イン ピーダンスで切り替えることができ、コスト低減の実用的効果は大きい。 As described above, according to the present invention, four kinds of signals can be switched with low impedance by a single switching IC having a simple circuit configuration, and the practical effect of cost reduction is great.
【図１】本考案の一実施例における切換替回路の回路図FIG. 1 is a circuit diagram of a switching circuit according to an embodiment of the present invention.
【図２】従来の切替回路の回路図FIG. 2 is a circuit diagram of a conventional switching circuit.
１１ 切換ＩＣ １２ 切換信号 １５ １２Ｖ供給用のダイオード １６ ５Ｖ供給用ダイオード １７ 電源平滑コンデンサー 11 Switching IC 12 Switching signal 15 12V supply diode 16 5V supply diode 17 Power supply smoothing capacitor
Claims (1)
において、２個のダイオードのカソードと１個の電源平
滑コンデンサーをその切替ＩＣの電源に接続し、一方の
ダイオードのアノードをＩＣのＳＷがＯＦＦの時に切れ
る１２Ｖに接続し、他の一方のダイオードのアノードを
ＩＣがＯＦＦの時も切れない５Ｖに接続し、１個の切換
ＩＣで４種類の信号を切換えることを特徴とする切換回
路。1. In a switching circuit using a 4066 switching IC, the cathodes of two diodes and one power supply smoothing capacitor are connected to the power supply of the switching IC, and the anode of one diode is connected to the SW of the IC. A switching circuit characterized in that it is connected to 12V which is cut off when it is OFF, the anode of the other diode is connected to 5V which is not cut even when the IC is OFF, and four kinds of signals are switched by one switching IC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6285291U JP2537105Y2 (en) | 1991-08-08 | 1991-08-08 | Switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6285291U JP2537105Y2 (en) | 1991-08-08 | 1991-08-08 | Switching circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0517723U true JPH0517723U (en) | 1993-03-05 |
| JP2537105Y2 JP2537105Y2 (en) | 1997-05-28 |
Family
ID=13212255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6285291U Expired - Lifetime JP2537105Y2 (en) | 1991-08-08 | 1991-08-08 | Switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2537105Y2 (en) |
-
1991
- 1991-08-08 JP JP6285291U patent/JP2537105Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2537105Y2 (en) | 1997-05-28 |
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