JPS585109U

JPS585109U - Voltage comparison detection circuit

Info

Publication number: JPS585109U
Application number: JP9868082U
Authority: JP
Inventors: 渡部　泰昭; 吉野　章夫
Original assignee: 日本ビクター株式会社
Priority date: 1982-06-30
Filing date: 1982-06-30
Publication date: 1983-01-13

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

[Brief explanation of the drawing]

第１図及び第３図は従来例のものの回路図、、第２図は
従来の直流安定化電源回路の回路図、第４図乃至第９図
は本考案の電圧比較検出回路の各異なる実施態様のもの
の回路図である。１・・・・・・第１の入力端、２・・・・・・第２の入
力端、３，３ａ・・・・・・出力端、４・・・・・・基
準電圧源、５，６．９〜１１，１３．１４・・・・・・
抵抗、Ｒ１・・・・・・第１の抵抗、Ｒ２・・・・・・
第２の抵抗、１５・・・・・・温度依存性を有する素子
、Ｑ，Ｑｓ，、Ｑ１．Ｑ２：−・・・・トランジスタ、
２ａ，１２・，１６〜１８・・・・・・端子、Ｌ・・・
・・・負荷。Figures 1 and 3 are circuit diagrams of a conventional example, Figure 2 is a circuit diagram of a conventional DC stabilized power supply circuit, and Figures 4 to 9 are various implementations of the voltage comparison and detection circuit of the present invention. FIG. 3 is a circuit diagram of an embodiment. 1...First input terminal, 2...Second input terminal, 3, 3a...Output terminal, 4...Reference voltage source, 5 , 6.9-11, 13.14...
Resistor, R1...First resistance, R2...
Second resistor, 15... Element having temperature dependence, Q, Qs,, Q1. Q2:-...transistor,
2a, 12..., 16-18...terminal, L...
···load.

Claims

[Scope of utility model registration request]

A first input terminal to which a reference voltage source is connected, a second input terminal to which another voltage source is connected, and an output that depends on the potential difference between the first and second input terminals described above is extracted. In a voltage comparison detection circuit constituted by a transistor circuit and having an output terminal, an output terminal is generated due to the temperature dependence of the voltage value of the reference voltage source and the voltage value of the base-emitter voltage of the transistor. In order to prevent changes in the detection output appearing at the input terminal, a first resistor is connected between the base and emitter of the transistor connected to the first input terminal or the second input terminal. A second resistor is connected to the base of the transistor, and the base of the transistor is connected to the base of the transistor.
According to the change in the current flowing through the first resistor that occurs when the emitter voltage or voltage value changes depending on the temperature, the first resistor? cause a change in the voltage drop that occurs across the resistance of
A voltage comparison detection circuit that corrects a change in a detection output appearing at an output terminal due to a temperature dependent element by a change in voltage drop occurring in the second resistor.