JPS5827904B2 - Audio power supply - Google Patents

Abstract

PURPOSE:To block the power supply to another amplifier simultaneously with the automatic stop of a record player by detecting the electric current flowing through the outlet for the record player so as to block the power supply to the outlet for an audio-system.

Description

[Detailed Description of the Invention] Recently, the mainstream of stereo systems is record players, amplifiers, and AM
The so-called component system, which is divided into functions such as a tuner for FM broadcasting, and a speaker, is becoming popular.

By the way, since these functions are different from each other, for example, when a record player finishes playing, it is usually an automatic stop type in which the needle is automatically removed, the driving morph is stopped, and the player's power is also turned off.

However, with the above-mentioned automatic shutdown type, other functions such as the amplifier were still active, and the husband's power had to be turned off each time, which led to people forgetting to turn it off.

The present invention was developed with the above points in mind, namely, it detects and monitors the power flowing to the record player outlet, and when this current is cut off, the control device switches the current to the other audio outlet. By doing this, when the record player automatically stops, the power to other amplifiers is also turned off at the same time.

The present invention will be explained below based on a drawing showing an embodiment of the present invention. 1 is an outlet for a record player, 2 is an outlet for audio other than this, and a plurality of these outlets 1 and 2 are connected to a power source 3. .

A is a body that houses these outlets 1 and 2, and the number of record player outlets 1 is at least L1 depending on the number of players and the purpose of the record player.

4 is a circuit connecting the player outlet 1 and the power source 3;
5 is a circuit that connects the audio outlet 2 and the power source 3; X is a current monitoring device inserted into the player circuit 4;
The example is transformer 6.

Y is a control device interlocked with this monitoring device X, which is composed of a relay 7 that cuts off the current of the audio circuit 5, and a transistor 8 that amplifies the monitoring device X.

Note that a manual operation switch 9 is inserted between the relay 7 and the transistor 8. For example, there is a contact 9a for turning off so that it is not controlled manually, a contact 9b for automatic turning off that turns off in conjunction, and a contact for always on. It consists of a contact point 9c.

Further, the contact 7a of the relay 7 is inserted into the audio circuit 5, and an indicator lamp 10 may be provided if necessary.

Further, a drive device Z of the control device Y is interposed between the monitoring device X and the control device Y, and a diode 11. It consists of a resistor 12 and a capacitor 13.

Further, a full-wave rectifier W is connected to the control device Y.

The above-mentioned monitoring device
Also, it may be a make, a relay, or a thermocouple.

Next, the operation of the audio power supply device of the present invention will be explained.
While the player connected to the player outlet 1 is playing, a secondary voltage is generated in the transformer 6 of the monitoring device
It is integrated by the capacitor 13 and turns on the transistor 8 of the control device Y.

Therefore, when the automatic off contact 9b of the switch 9 is turned on, the relay 7 operates to turn on the relay contact 7a, thereby continuing to supply the power 3 to the other audio outlets 2.

Then, when the player stops playing and the current is cut off, the transformer 6 of the monitoring device
Next voltage disappears.

Therefore, the functions of the control device Y are stopped, the relay contact 7a of the relay 7 is turned off, and the power supply to the audio outlet 2 is cut off.

Therefore, the audio connected to this, ie, the amplifier, is turned off.

In the present invention, as described above, the current flowing through the record player outlet 1 is monitored, and when this current is cut off, the current flowing through the other audio outlet 2 is cut off by the control device Y, so that the player automatically At the same time as it stops, other audio is also turned off, which has the effect of being compatible with the recent component systems that separate each function.

[Brief explanation of drawings]

The drawings show an embodiment of the audio power supply device of the present invention,
Figure 1 is a slope view of the aircraft, Figure 2 is a slope view of the switch, and Figure 3 is a slope view of the switch.
The figure is a circuit diagram. A... Airframe, 1, 2... Outlet, X... Monitoring device, Y... Control device, Z... Drive device, W...
Full-wave rectifier, 3...power supply, 4...circuit, 5...
Circuit, 6...Transformer, 7...Relay, 8...Transistor, 9...Switch, 10...Lamp.

Claims (1)

[Claims] 1 At least one of the plurality of outlets is used for record players, the others are used for audio other than record players, and a monitoring device that detects and monitors the current flowing from the record player outlet to the record player is connected to the outlet. It is interposed between the power supply and when the current of this monitoring device is turned,
An audio power supply device characterized in that a relay of a control device is interlocked with the monitoring device to cut off a relay contact connected between another audio outlet and a power source.