JPH0295915U

JPH0295915U -

Info

Publication number: JPH0295915U
Application number: JP409389U
Authority: JP
Priority date: 1989-01-18
Filing date: 1989-01-18
Publication date: 1990-07-31

Description

[Brief explanation of drawings]

第１図はこの考案の一実施例を示す回路図であ
る。第２図は従来技術を示す回路図である。図において、１０はスイツチノイズ音防止回路
、１２は電源スイツチ、１４は第１の固定接点、
１６は第２の固定接点、１８は第３の固定接点、
２０は可動接点、２２は電源回路、２６は定電圧
回路、２８はミユーテイング回路、Ｃ１はコンデ
ンサを示す。 FIG. 1 is a circuit diagram showing an embodiment of this invention. FIG. 2 is a circuit diagram showing the prior art. In the figure, 10 is a switch noise prevention circuit, 12 is a power switch, 14 is a first fixed contact,
16 is a second fixed contact, 18 is a third fixed contact,
20 is a movable contact, 22 is a power supply circuit, 26 is a constant voltage circuit, 28 is a mutating circuit, and C1 is a capacitor.

Claims

[Claims for Utility Model Registration] First, second and third fixed contacts, and two of the first to third fixed contacts when turned on or off.
a power switch including a movable contact that simultaneously contacts the first fixed contact; a power supply circuit whose output is connected to the first fixed contact; a constant voltage circuit connected to the second fixed contact and including a capacitor; a muting circuit connected to the second and third fixed contacts, when the power switch is turned on, the movable contact contacts the first and second fixed contacts, and the output from the power circuit is connected to the first and second fixed contacts. When the power switch is turned off, the movable contact contacts the second and third fixed contacts, and the voltage is applied to the muting circuit from the first fixed contact through the second fixed contact, and when the power switch is turned off, the movable contact contacts the second and third fixed contacts, A switch noise prevention circuit, wherein discharged charge of a capacitor is applied to the muting circuit from the second fixed contact through the third fixed contact.