JPH0170416U

JPH0170416U -

Info

Publication number: JPH0170416U
Application number: JP1987164456U
Authority: JP
Priority date: 1987-10-27
Filing date: 1987-10-27
Publication date: 1989-05-10

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す図である。第
２図はマイクロコンピユーターの出力端子○Ａ，
○Ｂのタイミングチヤートである。第３図はマイ
クロ、コンピユーターのブロツク図である。第４
図は、従来技術に依るスリープ／タイマー回路の
一例を示す図である。１……ラジオ受信装置、２……選択スイツチ、
３……時計機能を有するマイクロ・コンピユータ
ー、４……音量ボリユーム、５……増幅器、６…
…スピーカー、７ａ……可変抵抗、７ｂ……抵抗
、７ｃ……トランジスター、７ｄ……スイツチ。 FIG. 1 is a diagram showing an embodiment of the present invention. Figure 2 shows the output terminal ○A of the microcomputer,
This is the timing chart for ○B. FIG. 3 is a block diagram of a microcomputer. Fourth
FIG. 1 is a diagram showing an example of a sleep/timer circuit according to the prior art. 1... Radio receiving device, 2... Selection switch,
3...Microcomputer with clock function, 4...Sound volume, 5...Amplifier, 6...
...Speaker, 7a...Variable resistor, 7b...Resistor, 7c...Transistor, 7d...Switch.

Claims

[Scope of Claim for Utility Model Registration] In an automatic volume setting switching device for a radio receiver, etc., which has a timer function that automatically turns on or off the power switch of the device at a preset time and a sleep function, first and second volume adjustment means; switching means for driving and controlling the second volume adjustment means;
control means for controlling the switching means to disable the volume adjustment by the second volume adjustment means when the timer is operating and to enable it during the sleep operation; An automatic volume setting switching device characterized in that the volume is set by the second volume adjusting means.