JPS59151163U - voltage detector - Google Patents

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) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案の一実施例の回路図、第２図は第１図の
回路における■。と■３との関係の一例を示す図、第３
図は本考案により得られる電圧検出特性の一例を示す図
である。　　　　　　゛記号の説明＝８〜１０・・・定
電流源、１３．１４・・・入力端子、１５・・・基準電
圧源、１６・・・基準電流源、１７・・・出力端子、１
８・・・電圧供給端子、２０・・・差動増幅器。FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a circuit diagram of the circuit shown in FIG. Diagram showing an example of the relationship between and ■3, 3rd
The figure is a diagram showing an example of voltage detection characteristics obtained by the present invention.゛Explanation of symbols=8 to 10...Constant current source, 13.14...Input terminal, 15...Reference voltage source, 16...Reference current source, 17...Output terminal, 1
8... Voltage supply terminal, 20... Differential amplifier.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 差動増幅回路と、出力を前記差動増幅回路の一方の入力
に接続した定電圧源と、電圧が予め定めた電圧に達した
かどうかを検出しようとする電圧源に所定の抵抗値を有
する抵抗器を介して接続され、この抵抗器との接続点を
前記差動増幅回路の他方の入力に接続するようにした定
電流源を備え、前記差動増幅回路の出力の急激な変化に
より前記、　　電圧源が前記予め定めた電圧に達したこ
とを報知するようにした電圧検出器。A differential amplifier circuit, a constant voltage source whose output is connected to one input of the differential amplifier circuit, and a voltage source for detecting whether the voltage reaches a predetermined voltage have a predetermined resistance value. A constant current source is connected through a resistor, and a connection point with the resistor is connected to the other input of the differential amplifier circuit, and a sudden change in the output of the differential amplifier circuit causes the . A voltage detector configured to notify that a voltage source has reached the predetermined voltage.