JPS5973866U

JPS5973866U - Automatic dialing device sound generation circuit

Info

Publication number: JPS5973866U
Application number: JP17094882U
Authority: JP
Inventors: 多村　正
Original assignee: 三洋電機株式会社
Priority date: 1982-11-10
Filing date: 1982-11-10
Publication date: 1984-05-19
Also published as: JPH018057Y2

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図は本考案の実施例を示すブロック図、第２図は第
１図に示された一部分の波形図である。１・・・回線切換回路、２・・・制御回路、３・・・ラ
イントランス、４．　５・・・接点、６．　８−　コン
デンサ、７・・・プリアンプ、９・・・メインアンプ、
１０・・・スピーカ、１１・・・メモリ、１２・・・波
形整形回路、１３・・・スイッチ回路。FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a waveform diagram of a portion shown in FIG. 1. 1... Line switching circuit, 2... Control circuit, 3... Line transformer, 4. 5... Contact, 6. 8- Capacitor, 7... Preamplifier, 9... Main amplifier,
10...Speaker, 11...Memory, 12...Waveform shaping circuit, 13...Switch circuit.

Claims

[Scope of utility model registration request]

In an automatic dialing device equipped with a control circuit that performs operations such as storing an input telephone number in a memory circuit and transmitting the stored telephone number to a telephone line, an integrating circuit and a differentiating circuit are used. a waveform shaping circuit connected in cascade and to which a continuous or intermittent rectangular wave is applied from the control circuit; an amplifier circuit to which the output of the waveform shaping circuit and the signal of the telephone line are applied to a common input terminal; a switch circuit connected between a common input terminal of the amplifier circuit and ground and controlled by an output signal from the control circuit;
A sound generation circuit for an automatic dialing device, characterized in that the common input terminal is grounded when no sound is generated.