JPS58150167A - Timer stand-by device - Google Patents

Abstract

PURPOSE:To realize a gramophone record play by means of a timer and, at the same time to automatically listen to the reproduced sound of records, by connecting the output of a power time constant circuit to the common terminal of a timer stand-by switch and the starting circuit of a record player and the player position controlling input of the input selector circuit of an amplifier to the on-position terminal of the timer stand-by switch. CONSTITUTION:In case where a timer stand-by switch is left under the ON position, a time constant circuit 1 outputs a low-level signal for a fixed time when a preset time has come and a power supply simultaneously, the input selector of an amplifier is set to the player position and a loudspeaker 5 produces reproduced sounds of a gramophone record. Since the start controlling circuit of the player and the player position circuit of the input selector of the amplifier are connected to the timer stand-by switch, the player can be started and the input selector of the amplifier can be set automatically to the player position at a preset time by the timer.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a timer standby device for an audio device that combines a record player and an amplifier having a switch circuit for electronically selecting an input signal.

Conventionally, there has been no record player that uses a timer to play timed music. Further, even if a record player is provided with a timer start circuit, if the input selector of the amplifier is not set to the player position, the player will not be able to hear the sound of the record being played through the speaker even if the record is being played.

Therefore, an object of the present invention is to enable timer playback of records using a timer standby switch, and at the same time automatically set the input selector of the amplifier to the player position so that the playback sound of the record can be heard from the speaker. .

The figure is a block diagram in one embodiment of the present invention. In the figure, 1 is a power supply time constant circuit that outputs a low level signal, and 2 is a start circuit for a record player.The low level control signal causes the motor to rotate and the tone arm to descend to the end of the record. 3 is an amplifier input selector circuit which electronically selects output signals from a cheese, player, tape, etc. using a low level control signal and inputs the selected signals to the amplifier.

A power supply time constant circuit 1 is connected to a common terminal of the timer standby switch SWI, and a record position control input of a record player start circuit 2 and an amplifier input selector circuit 3 are connected to an on-bore terminal. In the above configuration, when the timer standby switch is set to the on position and power is supplied from the timer at a predetermined time, the time constant circuit 1 outputs a low level signal for a certain period of time. Then, at the same time as the record player starts playing, the input selector of the amplifier is set to the player position, and the reproduced sound of the record can be heard from the speaker 5.

As described above, according to the present invention, since the start control circuit of the player and the player motion circuit of the input selector of the amplifier are connected to the timer standby switch,
The timer allows you to start the player at a certain time and automatically change the input selector of the amplifier to the player position, so even if you are listening to FM sound etc. and enter the timer operation, you will not be able to hear the record playback sound. I can hear it.

[Brief explanation of drawings]

The figure is a block diagram of a timer standby device in one embodiment of the present invention. 1... Power supply time constant circuit, 2... Record player start circuit, 3... Amplifier input selector circuit, 4
...Amplifier, 5...Speaker, 6.7...Power cord. 1-9

Claims (1)

[Claims] In an audio device that combines a power supply time constant circuit that outputs a low level, a record player that starts playing a record at a low level/start pulse, and an amplifier that has a switch circuit that electronically selects an input signal using a low level control signal. , the output of the power supply time constant circuit is connected to a common terminal of the timer standby switch, and the start circuit of the record player and the player position control input of the input selector circuit of the amplifier are connected to the on position terminal of the timer standby switch. A timer standby device for record players.