JPS6029286U - Power supply voltage abnormality detection circuit - 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図は従来の電圧検出型の電圧異常検出回路　
　−図、第２図も同様に従来の電流検出型の電圧異常検
出回路図、第３図は本考案の電圧異常検出回路　　゛の
原理図、第４図はＰＮ接合素子の順方向特性図、第５図
は第４−の線形領域の等価回路図、第　　　−６図は同
じく第４図の非線形領域の等価回路図、第７図は他の実
施例を示す回路図であや。゛ □Figure 1 shows a conventional voltage detection type voltage abnormality detection circuit
Similarly, Figure 2 is a conventional current detection type voltage abnormality detection circuit diagram, Figure 3 is a principle diagram of the voltage abnormality detection circuit of the present invention, and Figure 4 is a forward characteristic diagram of a PN junction element. 5 is an equivalent circuit diagram of the linear region shown in FIG. 4, FIG. 6 is an equivalent circuit diagram of the nonlinear region shown in FIG. 4, and FIG. 7 is a circuit diagram showing another embodiment.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 被検出電圧電源め両端子１，２間にＰＮ接合素子３と該
ＰＮ接合素子３が非線形領域で動作するようにバイアス
電流を設定する固定抵抗゛４との直列回路を接続し、か
つ前記ＰＮ接合素子３と前記固定抵抗４との接続点５か
らの出力電圧を検出信号としてなることを特徴とする電
源電圧異常検出−回路。A series circuit of a PN junction element 3 and a fixed resistor 4 for setting a bias current so that the PN junction element 3 operates in a nonlinear region is connected between both terminals 1 and 2 of the voltage source to be detected; A power supply voltage abnormality detection circuit characterized in that an output voltage from a connection point 5 between a junction element 3 and the fixed resistor 4 is used as a detection signal.