JP2537105Y2 - Switching circuit - Google Patents
Switching circuitInfo
- Publication number
- JP2537105Y2 JP2537105Y2 JP6285291U JP6285291U JP2537105Y2 JP 2537105 Y2 JP2537105 Y2 JP 2537105Y2 JP 6285291 U JP6285291 U JP 6285291U JP 6285291 U JP6285291 U JP 6285291U JP 2537105 Y2 JP2537105 Y2 JP 2537105Y2
- Authority
- JP
- Japan
- Prior art keywords
- switching
- signal
- power supply
- switching circuit
- diode
- 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.)
- Expired - Lifetime
Links
Description
【０００１】[0001]
【産業上の利用分野】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。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply for a switching circuit, and more particularly to an improved power supply.
【０００２】[0002]
【従来の技術】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。2. Description of the Related Art FIG. 2 is a circuit diagram of a conventional switching circuit. Reference numeral 1 denotes a switching integrated circuit (hereinafter, referred to as a switching integrated circuit) for switching signals.
Call it IC. ), 2 is a switching signal for controlling switching by the switching IC 1, and 3 is a signal to be switched. Reference numeral 4 denotes 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]
【考案が解決しようとする課題】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 described above, since the ON resistance of the IC is determined by the power supply voltage, when switching the signal at 5 V (normal power supply voltage of the microcomputer), the SW of FIG. Thus, two circuits are used. Therefore, in order to switch between four types of signals, IC
Is required. In view of the above, an object of the present invention is to provide a circuit that can switch four types of signals with one IC.
【０００４】[0004]
【課題を解決するための手段】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-mentioned problems, the switching circuit according to the present invention has two diodes and one capacitor in the power supply of the switching IC. When the SW is ON, the power of the IC is supplied from 12V to reduce the ON resistance of the IC when 12V is supplied from the diodes, and when the SW is OFF, 12V.
In this case, four kinds of signals are switched by one IC by supplying the power from 5 V.
【０００５】[0005]
【作用】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。According to the present invention, when the SW is ON, the power of the IC is supplied from 12V, the ON resistance of the IC is small, and one signal is switched by one SW, and the SW is turned OFF. At this time, although 12 V is cut off, the voltage is supplied from 5 V to secure the power supply voltage of the IC.
【０００６】[0006]
【実施例】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, reference numeral 11 denotes a switching IC for switching signals, 12 denotes a switching signal for controlling switching by the switching IC 11, and 13 denotes a signal to be switched. 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 configured as described above will be described below.
【０００８】切換信号１２が”Ｈ１”の時 、切換ＩＣ
１１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 supply of the switching IC at that time, and the diode 16 is turned off. Therefore, the ON resistance of the IC is small and four kinds of signals 13 are provided.
Is output as a signal 14 by the SW.
【０００９】切換信号１２が”ＬＯ”の時、切換ＩＣ１
１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 1
Although 1 is turned off, 12 V is cut off to the power supply of the switching IC at that time, so that 5 V is supplied from the diode 16 and the diode 15 is turned off. At this time, the SW is turned off and 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, four types of signals can be switched at a low impedance by one switching IC by providing two diodes and one capacitor switching IC in the power supply. .
【００１１】[0011]
【考案の効果】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。[Effect of the Invention] As described above, the present invention has a simple circuit configuration 1
Four types of signals can be switched with low impedance by using one switching IC, 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 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。In a switching circuit using a switching IC of a 4066 system, 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, wherein the switching circuit is connected to 12 V which is cut off when turned off, the anode of the other diode is connected to 5 V which is not cut off even when the IC is turned 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 JPH0517723U (en) | 1993-03-05 |
| JP2537105Y2 true 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 |
|---|---|
| JPH0517723U (en) | 1993-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2537105Y2 (en) | Switching circuit | |
| JPH10257691A (en) | Power supply circuit for incorporating encoder | |
| JP2658142B2 (en) | Logical unit | |
| JP2527787Y2 (en) | Power supply switching device | |
| JPS58101218U (en) | DC stabilized power supply circuit | |
| JPS6030638U (en) | GTO thyristor gate control circuit | |
| JPH02112032U (en) | ||
| JPH01145091U (en) | ||
| JPS6152439U (en) | ||
| JPH0728510B2 (en) | Power supply | |
| JPS5963716U (en) | Stabilized DC power supply | |
| JPS5894013U (en) | switching regulator | |
| JPH01149130U (en) | ||
| JPS5980810U (en) | Transistor stabilized DC power supply | |
| JPH0486927U (en) | ||
| JPS62136922A (en) | Output circuit for ttl integrated circuit | |
| JPH0237549U (en) | ||
| JPS62112729U (en) | ||
| JPS6023370B2 (en) | power circuit | |
| JPS647321U (en) | ||
| JPS6310788U (en) | ||
| JPH03104220U (en) | ||
| JPS6069592U (en) | Inductive load current supply circuit | |
| JPH01113533U (en) | ||
| JPH01113815A (en) | Memory back-up device |