JPS58173939U

JPS58173939U - pulse circuit

Info

Publication number: JPS58173939U
Application number: JP7162182U
Authority: JP
Inventors: 大河　喜由
Original assignee: 三菱電機株式会社
Priority date: 1982-05-14
Filing date: 1982-05-14
Publication date: 1983-11-21

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図は従来のパルス回路を示す回路図、第２図はその
動作を説明するための波形図、第３図はこの考案の一実
施例によるパルス回路を示す回路図、第４図はその動作
を説明するための波形図である。図において、１はフリップフロップ回路、４はコンデン
サ、５は電圧比較器、８は定電流充電回路、９は定電流
放電回路である。、なお、図中、同一符号は同一、また
は相当部分を示す。Fig. 1 is a circuit diagram showing a conventional pulse circuit, Fig. 2 is a waveform diagram for explaining its operation, Fig. 3 is a circuit diagram showing a pulse circuit according to an embodiment of this invention, and Fig. 4 is its circuit diagram. FIG. 3 is a waveform diagram for explaining the operation. In the figure, 1 is a flip-flop circuit, 4 is a capacitor, 5 is a voltage comparator, 8 is a constant current charging circuit, and 9 is a constant current discharging circuit. In the figures, the same reference numerals indicate the same or equivalent parts.

Claims

[Scope of utility model registration request]

(1) A capacitor, a charging circuit that charges the capacitor with a constant current, and a discharge circuit that discharges the capacitor with a constant current, one input terminal receives the voltage across the capacitor, and the other input terminal receives the voltage across the capacitor. A voltage comparator that inputs a reference voltage, compares these two input voltages, and outputs an output depending on the magnitude, and
and is set to a second state by the output of the voltage comparator, and stops the operation of either the charging circuit or the discharging circuit depending on the first or second state. A pulse circuit characterized by comprising a pulse circuit.

(2) The discharging circuit constantly discharges the capacitor with a constant current proportional to a predetermined control voltage, and the flip-flop circuit stops the operation of the charging circuit when in the second state, thereby causing the 2. The pulse circuit according to claim 1, wherein the flip-flop circuit is configured to output a constant duty pulse as the pulse circuit when the flip-flop circuit is in the first state.