JPS61158615U

JPS61158615U -

Info

Publication number: JPS61158615U
Application number: JP4064285U
Authority: JP
Priority date: 1985-03-20
Filing date: 1985-03-20
Publication date: 1986-10-01
Also published as: JPH045067Y2

Description

[Brief explanation of drawings]

図示した回路は本考案の電動機制御回路の一実
施例である。主な図番の説明、１……第１電動機、２……第
２電動機、３……第１スイツチ、６……第１電動
機駆動回路、７……第２スイネチ、１２……第２
電動機駆動回路、１３……ダビングスイツチ、１
７……制御トランジスター、１９……録音再生切
換スイツチ、２０……第３スイツチ、２５……制
御回路、２７……スイツチングトランジスター、
２９……時定数回路。 The illustrated circuit is one embodiment of the motor control circuit of the present invention. Explanation of main drawing numbers, 1...First motor, 2...Second motor, 3...First switch, 6...First motor drive circuit, 7...Second switch, 12 ...Second motor
Motor drive circuit, 13...dubbing switch, 1
7...Control transistor, 19...Record/playback selector switch, 20...Third switch, 25 ...Control circuit, 27...Switching transistor,
29 ...Time constant circuit.

Claims

[Scope of utility model registration request]

A first tape recorder having a playback function and configured to displace a sliding board on which a magnetic head is mounted to an operating position and a non-operating position by the rotational force of an electric motor, and a recording and playback function. and a second tape recorder configured to displace the sliding substrate on which the magnetic head is mounted to the operating position and the non-operating position by the rotational force of the electric motor, and a second tape recorder is incorporated in the same cabinet. In a cassette tape recorder having a dubbing function for recording a signal reproduced by a first tape recorder on a second tape recorder, a playback operation button provided on the first tape recorder is locked in an operating position. a first switch that is in a closed state when the switch is in the dubbing state; a dubbing switch that is switched to the dubbing state during dubbing operation; A first electric motor drive circuit rotates a first electric motor that drives a magnetic tape to travel; a second switch, a second motor drive circuit that becomes operational when the second switch is closed in a dubbing state and rotationally drives a second motor that drives a magnetic tape of a second tape recorder; 2. A sliding board that is incorporated in the tape recorder and is displaced to the operating position by the rotational force of the second electric motor during recording and playback operations, and a sliding board that is displaceable to the operating position due to the recording operation. A recording/playback selector switch that is opened and then closed when the recording operation button returns to a non-operating position accompanying a stop operation, and becomes electrically conductive when the recording/playback selector switch is opened while in a dubbing state. and a control transistor that disables the second motor drive circuit when the switch is in an open state, and a control transistor that becomes operable when the recording/playback switch is in an open state and disables the control transistor when the first tape recorder is in a playback state. a control circuit that starts rotation of the second electric motor by bringing it into a conductive state; and supplying a current that brings the second motor drive circuit into an operating state for a predetermined period of time when the second switch is switched from a closed state to an open state. When a stop operation is performed while the second tape recorder is in a recording standby state in a dubbing state, the second motor drive circuit is kept in an operating state for a predetermined period of time by the current supplied from the time constant circuit. 1. A motor control circuit for a cassette-type tape recorder, characterized in that a sliding board, which was in an operating position, is moved to a non-operating position by the rotational force of a second electric motor.