JPH0226822U - - Google Patents
Info
- Publication number
- JPH0226822U JPH0226822U JP10421188U JP10421188U JPH0226822U JP H0226822 U JPH0226822 U JP H0226822U JP 10421188 U JP10421188 U JP 10421188U JP 10421188 U JP10421188 U JP 10421188U JP H0226822 U JPH0226822 U JP H0226822U
- Authority
- JP
- Japan
- Prior art keywords
- terminal
- circuit
- gate circuit
- amplifier
- switch
- 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
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
Landscapes
- Electronic Switches (AREA)
Description
第１図は本考案の一実施例を示す図、第２図は
従来例を示す図である。
２……インピーダンス整合用抵抗、３……カツ
プリングコンデンサ、４……増幅器、７……第２
端子、１０……第１端子、１１……スイツチ、１
３……電圧発生回路、１４……ダイオード、１５
……ＯＲゲート（第１ゲート回路）、１６……Ａ
ＮＤゲート（第２ゲート回路）。
FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing a conventional example. 2... Impedance matching resistor, 3... Coupling capacitor, 4 ... Amplifier, 7... Second
Terminal, 10...First terminal, 11...Switch, 1
3 ... Voltage generating circuit, 14... Diode, 15
...OR gate (first gate circuit), 16...A
ND gate (second gate circuit).
Claims (1)
るスイツチを備えた第１端子と、この第１端子よ
り印加される信号を増幅する増幅器と、第１端子
に接続されたインピーダンス整合用抵抗を含み、
前記スイツチのオン・オフに応じて２種類の電圧
を発生する電圧発生回路と、第２端子と、この第
２端子より印加される信号及び電圧発生回路から
の電圧が供給される第１ゲート回路と、この第１
ゲート回路の出力及び前記増幅器の出力が供給さ
れる第２ゲート回路とを備えたことを特徴とする
入力切換回路。 A first terminal equipped with a switch that is turned on and off according to insertion and removal of a signal supply line, an amplifier that amplifies the signal applied from this first terminal, and an impedance matching resistor connected to the first terminal. including;
a voltage generation circuit that generates two types of voltages depending on whether the switch is turned on or off; a second terminal; and a first gate circuit to which a signal applied from the second terminal and a voltage from the voltage generation circuit are supplied. And this first
An input switching circuit comprising: a second gate circuit to which the output of the gate circuit and the output of the amplifier are supplied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10421188U JPH0226822U (en) | 1988-08-05 | 1988-08-05 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10421188U JPH0226822U (en) | 1988-08-05 | 1988-08-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0226822U true JPH0226822U (en) | 1990-02-21 |
Family
ID=31335729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10421188U Pending JPH0226822U (en) | 1988-08-05 | 1988-08-05 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0226822U (en) |
-
1988
- 1988-08-05 JP JP10421188U patent/JPH0226822U/ja active Pending