JPH0179115U - - Google Patents
Info
- Publication number
- JPH0179115U JPH0179115U JP1987175554U JP17555487U JPH0179115U JP H0179115 U JPH0179115 U JP H0179115U JP 1987175554 U JP1987175554 U JP 1987175554U JP 17555487 U JP17555487 U JP 17555487U JP H0179115 U JPH0179115 U JP H0179115U
- Authority
- JP
- Japan
- Prior art keywords
- series
- resistor
- comparison means
- electronic switch
- series 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.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Control Of Voltage And Current In General (AREA)
Description
第1図は本考案の直流レベル調整回路を示す回
路図、第2図は同回路の一状態を示す等価回路図
である。
1,2,3,4……第1〜第4の直列回路、6
,8,10,12……電子スイツチ、14,15
……比較器、16,17,18,19……分圧用
抵抗、21……選択用スイツチ、22,23,2
4,25……スイツチングトランジスタ。
FIG. 1 is a circuit diagram showing a DC level adjustment circuit of the present invention, and FIG. 2 is an equivalent circuit diagram showing one state of the same circuit. 1, 2, 3, 4...first to fourth series circuits, 6
, 8, 10, 12...electronic switch, 14, 15
... Comparator, 16, 17, 18, 19 ... Voltage dividing resistor, 21 ... Selection switch, 22, 23, 2
4,25...Switching transistor.
Claims (1)
の直列回路、第2の抵抗と第2の電子スイツチよ
り成る第2の直列回路、第3の抵抗と第3の電子
スイツチより成る第3の直列回路、第4の抵抗と
第4の電子スイツチより成る第4の直列回路、可
変抵抗器、第1の比較手段、第2の比較手段、前
記比較手段を制御する制御手段とより成り、前記
第1の直列回路、可変抵抗器及び第2の直列回路
を電源とアース間に直列に接続し、前記第1及び
第2の直列回路に各々第3及び第4の直列回路を
並列接続し、前記第1及び第4の直列回路の制御
端子を共通接続して前記第2の比較手段の出力端
子に接続し、前記第2及び第3の直列回路の制御
端子を共通接続して、前記第1の比較手段の出力
端子に接続し、前記第1及び第2の比較手段の各
入力端側に制御信号を加え、前記可変抵抗器より
所定レベルを導出することを特徴とした直流レベ
ル調整回路。 a first resistor and a first electronic switch;
a second series circuit consisting of a second resistor and a second electronic switch, a third series circuit consisting of a third resistor and a third electronic switch, a fourth resistor and a fourth electronic switch. a fourth series circuit consisting of a variable resistor, a first comparison means, a second comparison means, and a control means for controlling the comparison means, the first series circuit, the variable resistor and the second A series circuit is connected in series between a power supply and a ground, third and fourth series circuits are connected in parallel to the first and second series circuits, respectively, and control terminals of the first and fourth series circuits are connected in parallel. the control terminals of the second and third series circuits are commonly connected and connected to the output terminal of the first comparison means; A DC level adjustment circuit, characterized in that a control signal is applied to each input end of the first and second comparison means, and a predetermined level is derived from the variable resistor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987175554U JPH0179115U (en) | 1987-11-17 | 1987-11-17 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1987175554U JPH0179115U (en) | 1987-11-17 | 1987-11-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0179115U true JPH0179115U (en) | 1989-05-26 |
Family
ID=31467343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1987175554U Pending JPH0179115U (en) | 1987-11-17 | 1987-11-17 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0179115U (en) |
-
1987
- 1987-11-17 JP JP1987175554U patent/JPH0179115U/ja active Pending