JPH01108677U - - Google Patents
Info
- Publication number
- JPH01108677U JPH01108677U JP452988U JP452988U JPH01108677U JP H01108677 U JPH01108677 U JP H01108677U JP 452988 U JP452988 U JP 452988U JP 452988 U JP452988 U JP 452988U JP H01108677 U JPH01108677 U JP H01108677U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- base
- level
- variable resistor
- switching means
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Television Receiver Circuits (AREA)
Description
第１図は本考案の直流レベル調整可能を示す回
路図、第２図及び第３図は第１図における切換ス
イツチを切換えた状態を示す等価回路図を示す。
１……第１のトランジスタ、２……第２のトラ
ンジスタ、３……可変抵抗器、７……切換スイツ
チ、１４……出力端子。
FIG. 1 is a circuit diagram showing that the DC level can be adjusted according to the present invention, and FIGS. 2 and 3 are equivalent circuit diagrams showing a state in which the changeover switch in FIG. 1 is switched. DESCRIPTION OF SYMBOLS 1... First transistor, 2... Second transistor, 3... Variable resistor, 7... Changeover switch, 14... Output terminal.
Claims (1)
に接続し、該可変抵抗器に第１のトランジスタの
ベースを接続し、該第１のトランジスタの出力側
を第２のトランジスタのベース側に接続すると共
に、該第２のトランジスタのベース側に直流レベ
ル切換用のスイツチング手段を接続し、該スイツ
チング手段の設定に応じて前記第２のトランジス
タのベース電位を変化させ、該第２のトランジス
タの出力側の直流レベルを調整することを特徴と
した直流レベル調整回路。 A variable resistor for DC voltage adjustment is connected between the power supply and ground, the base of the first transistor is connected to the variable resistor, and the output side of the first transistor is connected to the base side of the second transistor. At the same time, switching means for switching the DC level is connected to the base side of the second transistor, and the base potential of the second transistor is changed according to the setting of the switching means, so that the output of the second transistor is changed. A DC level adjustment circuit characterized by adjusting the DC level on the side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP452988U JPH01108677U (en) | 1988-01-18 | 1988-01-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP452988U JPH01108677U (en) | 1988-01-18 | 1988-01-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01108677U true JPH01108677U (en) | 1989-07-24 |
Family
ID=31207120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP452988U Pending JPH01108677U (en) | 1988-01-18 | 1988-01-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01108677U (en) |
-
1988
- 1988-01-18 JP JP452988U patent/JPH01108677U/ja active Pending