JPS5842668U - voltage comparison circuit - Google Patents
voltage comparison circuitInfo
- Publication number
- JPS5842668U JPS5842668U JP13648881U JP13648881U JPS5842668U JP S5842668 U JPS5842668 U JP S5842668U JP 13648881 U JP13648881 U JP 13648881U JP 13648881 U JP13648881 U JP 13648881U JP S5842668 U JPS5842668 U JP S5842668U
- Authority
- JP
- Japan
- Prior art keywords
- operational amplifier
- comparison circuit
- voltage comparison
- switching element
- level
- 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
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図乃至第３図は従来の電圧比較回路の回路図および
動作説明図、第４図および第５図はこの考案に係る電圧
比較回路の一実施例を示す回路図および動作説明図、第
６図はこの考案の他の実施例を示す回路図である。
１・・・オペアンプ、Ｒ１，Ｒ２・・・抵抗、ＶＲ・・
・可変抵抗、ＴＲ・・・トランジスタ（三端子スイッチ
ング素子）。1 to 3 are a circuit diagram and an operation explanatory diagram of a conventional voltage comparison circuit, and FIGS. 4 and 5 are a circuit diagram and an operation explanatory diagram showing an embodiment of the voltage comparison circuit according to the present invention. FIG. 6 is a circuit diagram showing another embodiment of this invention. 1... operational amplifier, R1, R2... resistor, VR...
・Variable resistance, TR...transistor (three-terminal switching element).
Claims (1)
基準電圧が一方の入力端子に印加されるオペアンプと、
該オペアンプの出力が制御端子に接続され、芽ペアンプ
の出力がＨレベルまたハトレベルのいずれか一方でのみ
ＯＮＬ、そのＯＮ状態にて可変抵抗を介して上記一方の
入力端子に正帰還をかけるよう接続された三端子スイッ
チング素子とを備え、上記スイッチング素子がＯＮした
とき上記基準電圧が上記可変抵抗の抵抗値に対応した値
だけ変化するよう構成したことを特徴とする電圧比較回
路。an operational amplifier in which a reference voltage determined by the voltage division ratio of two resistors connected in series with a DC power supply is applied to one input terminal;
The output of the operational amplifier is connected to the control terminal, and the output of the operational amplifier is ON only at either H level or pigeon level, and in that ON state, it is connected to apply positive feedback to the above one input terminal via a variable resistor. a three-terminal switching element, the voltage comparison circuit being configured such that when the switching element is turned on, the reference voltage changes by a value corresponding to the resistance value of the variable resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13648881U JPS5842668U (en) | 1981-09-14 | 1981-09-14 | voltage comparison circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13648881U JPS5842668U (en) | 1981-09-14 | 1981-09-14 | voltage comparison circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5842668U true JPS5842668U (en) | 1983-03-22 |
Family
ID=29929809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13648881U Pending JPS5842668U (en) | 1981-09-14 | 1981-09-14 | voltage comparison circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5842668U (en) |
-
1981
- 1981-09-14 JP JP13648881U patent/JPS5842668U/en active Pending
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