JPS58191729U - voltage comparison 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図は従来の電圧比較回路の一例の回路図、第２図は
従来の電圧比較回路の一例の回路図、第　。 ３図はこの考案の電圧比較回路の一実施例の回路図であ
る。 １・・・・・・可変抵抗器、２．３・・・・・・抵抗器
、４・・・・・・演算増幅器、６・・・・・・コンデン
サ、１１・・・・・・ツェナーダイオード、１０・・・
・・・電圧比較回路。FIG. 1 is a circuit diagram of an example of a conventional voltage comparison circuit, and FIG. 2 is a circuit diagram of an example of a conventional voltage comparison circuit. FIG. 3 is a circuit diagram of an embodiment of the voltage comparison circuit of this invention. 1...Variable resistor, 2.3...Resistor, 4...Operation amplifier, 6...Capacitor, 11...Zener Diode, 10...
...Voltage comparison circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 比較電圧を出力する抵抗器分圧回路、入力電圧と前記比
較電圧とを加算する抵抗器加算回路、その抵抗器加算回
路の出力電圧が入力される負入力端子と接地電位に保た
れる正入力端子とを有する演算増幅器およびその演算増
幅器の出力端子と前記負入力端子間に接続される定電圧
ダイオードを具備してなる電圧比較回路。A resistor voltage divider circuit that outputs a comparison voltage, a resistor addition circuit that adds the input voltage and the comparison voltage, a negative input terminal to which the output voltage of the resistor addition circuit is input, and a positive input that is kept at ground potential. 1. A voltage comparison circuit comprising: an operational amplifier having a terminal; and a constant voltage diode connected between an output terminal of the operational amplifier and the negative input terminal.