JPH0635669Y2 - Power supply connection device for audio equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a power supply connection device for an audio device or the like that supplies power when an audio device or the like (tape recorder, amplifier, tuner) is used in combination.

2. Description of the Related Art In recent years, many power supply connection devices for audio equipment and the like have been developed on the premise that they are used in combination with each other, without a commercial power supply connection device in the device body.

Hereinafter, an example of the power supply connection device for the above-described conventional audio equipment and the like will be described with reference to the drawings.

FIG. 5 is a block diagram of a main part of a conventional power supply connection device for audio equipment and the like. In FIG. 5, 1 is an audio equipment main body, 2 is a household commercial power outlet, and a power plug for supplying commercial power to the main body 1 via a power cord 3 described later. 3 is a connection between the power plug 2 and the main body 1. Power cord,
4 and 5 are power sockets attached to the main body 1,
The socket 4 is connected so that the commercial power supplied to the main body 1 is output as it is, and the socket 5 is connected so that the commercial power supplied to the main body 1 is output via a power switch 6 described later. . 7 is a power transformer.

The operation of the power supply connection device for audio equipment and the like configured as described above will be described below.

The commercial power supplied from the power plug 2 connected to a household commercial power outlet (not shown) to the commercial power input terminals 3a and 3b of the main body 1 through the power cord 3 has the power switch 6 in the main body. Is applied to both ends of the power transformer 7 on the primary side 7a and 7b and both ends 5a and 5b of the power socket 5, and is turned on and off by opening and closing the power switch 6.

Further, both ends 4a and 4b of the power socket 4 are output as they are supplied to the commercial power input terminals 3a and 3b.

Next, an example of the connection between the audio devices and the operation when the above-described conventional power supply connecting device for the audio devices is used will be described with reference to FIGS. 5 and 6.

FIG. 6 is a connection diagram showing an example of a connection between audio devices when a conventional power supply connection device for audio devices is used. In FIG. 6, the same components as those in FIG. 5 are designated by the same reference numerals. In FIG. 6, assuming that 6 is an amplifier, 17 is a tape recorder, and 8 is a tuner, commercial power is supplied to the amplifier 6 from a household commercial power outlet 10 through a power plug 2 and a power cord 3. The tape recorder 7 is connected so that commercial power is supplied from the power socket 5 attached to the amplifier 6 via the power plug 2 ″ and the power cord 3 ″, and the tuner 2 is attached to the amplifier 6 The power socket 4 is connected so that commercial power is supplied via the power plugs 2'and 3 '.

Problems to be Solved by the Invention However, in the above-described configuration, since the power transformer is used for each device, the configuration is complicated and the cost is increased. Furthermore, since the power transformer itself is a relatively heavy component, it had many problems such as measures against drop impacts when transporting equipment and increased transport costs. When the main equipment such as an amplifier is used so that the AC power on the secondary side of the power transformer is supplied to each equipment (tuner, tape recorder), etc. when used in combination with each other, the production process or malfunction may occur. When attempting to operate individual devices on a service bench etc. at the time of repair, etc., it is necessary to prepare the amplifier etc. which is the source of AC power at the same time. It was a heavy burden on the clients.

In view of the above problems, the present invention eliminates the power transformer for each device, and when the devices are used in combination with each other, the AC power on the secondary side of the power transformer is transferred from the main device such as an amplifier to the individual device (tuner). , Tape recorders, etc., a power supply connection device for audio equipment, etc., which is configured so that power can be easily supplied to the equipment on the service bench, etc. during the production process or during repair of failures. It is provided.

Means for Solving the Problems In order to solve the above problems, the power supply connection device for audio equipment of the present invention receives AC power from the main body and the power transformer secondary side from the outside of the main body and converts it to DC power. A rectifying circuit for conversion,
A printed wiring board on which the rectifier circuit is placed; and an alternating current power supply terminal, one end of which is connected to an input path of the rectifier circuit and the other end of which is drawn out from the inside of the main body. An AC power supply or a DC power supply terminal is provided in parallel on the printed wiring board inside the main body.

With the above-described configuration, the present invention has a printed wiring on which a rectifier circuit is mounted in parallel with an AC power supply terminal used when the devices are combined with each other in a production process or a service bench, etc. for repairing troubles. Predetermined AC power or DC power can be directly supplied to the AC power supply or DC power supply terminal provided on the board, which reduces costs and weight. Therefore, even if the power transformer is abolished from the inside of the equipment, the power can be easily supplied to the equipment.

Embodiment A power supply connecting device for an audio device and the like according to an embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram of main parts of a power supply connecting device for audio equipment and the like according to a first embodiment of the present invention. In FIG. 1, 1 is an audio equipment main body, 2 is a rectifier circuit that converts AC power into DC power, 2D is a rectifier (diode) that constitutes the rectifier circuit 2, 2C is a capacitor, 3 is the rectifier circuit 2, and a predetermined value described later. Printed circuit board on which the load circuit 6 of 4 is mounted
Is an AC power supply terminal to which AC power on the secondary side of the power transformer is supplied when the equipment is used in combination, 5 is a production process,
Alternately, in order to supply a predetermined AC power or DC power when the device body is operated alone at the time of repairing a failure, AC power or DC provided in parallel with the AC power supply terminal 4 on the printed wiring board 2 A power supply terminal 6 is a load circuit of the rectifier circuit 2.

The operation of the power supply connection device for audio equipment and the like configured as described above will be described below.

First, when a combination of devices is used, AC power on the secondary side of the power transformer is supplied to the main body 1 of each device (tuner, tape recorder) or the like from the main device such as an amplifier via the AC power supply terminal 4. Then, it is supplied to the rectifier circuit 2 through the AC power or DC power supply terminal 5, converted into DC power by this, and then supplied to the load circuit 6.

Next, when DC power is supplied to an AC power supply or a DC power supply terminal provided on the printed wiring board 3 inside the device body 1 by a service bench or the like during a production process, a repair, etc., the rectifier circuit 2 Therefore, the DC power lower by the amount of the forward voltage drop due to the diode 2D constituting the above is supplied to the load circuit 6. However, the forward voltage drop due to this diode 2D is generally about 0.6 V in the case of a silicon diode, which is sufficiently small with respect to the total DC power value and often does not cause any particular problem. This can be dealt with by supplying DC power in consideration of the voltage drop in advance.

Further, when the AC power is supplied to the AC power or the DC power supply terminal 5, by supplying the AC power under the same conditions as the case where the AC power is supplied from the AC power supply terminal 4 described above, DC power is supplied to the load circuit 6.

Next, an example of connection between the audio equipments when the above-described power supply connection device for the audio equipments of the present invention is used, and AC power or DC power supply terminal 5 in a production process or a service bench, etc.
A method of supplying DC power to the power supply will be described with reference to FIGS. 2 and 3. In addition, in FIG. 2 and FIG.
The same components as those in the figure are designated by the same reference numerals.

First, FIG. 2 shows a connection between audio equipments. If 11 is an amplifier and 13 is a tape recorder, the amplifier 11 is connected to a household commercial power outlet 9 through a power cord 10 with a plug. Connected so that commercial power is supplied to the tape recorder 13, and the AC power of the secondary side of the power transformer (not shown) built in the amplifier 11 is connected to the secondary side of the power transformer provided in the amplifier 11. Connection is made so that the AC power output terminal supplies power via the AC power supply terminal 4 of the tape recorder 13.

Next, FIG. 3 is a wiring diagram showing a production process or a method of supplying direct-current power to the alternating-current power or direct-current power supply terminal 5 in a service bench or the like, where 7 is a stabilized direct current power supply and 8 is a stabilized direct current power. A connection cord with a clip, one end of which is connected to the output terminal of the power supply 7, and which has a connection cord 8 with a clip for connecting the DC power from the DC stabilized power supply 7 set to a predetermined value in advance.
Via the rectifier circuit to connect to the AC power or DC power supply terminal 5 provided on the printed wiring board 3.

As described above, according to this embodiment, the main body, the rectifier circuit that receives the AC power on the secondary side of the power transformer from the outside of the main body and converts the AC power into the DC power, and the printed wiring board on which the rectifier circuit is mounted. And an AC power supply terminal, one end of which is connected to an input path of the rectifier circuit and the other end of which is drawn out from the inside of the main body, and the AC power or DC power supply terminal is provided in parallel with the AC power supply terminal. By installing on the printed wiring board inside the main unit, even if the power transformer for each device is abolished, the AC power on the secondary side of the power transformer will be separated from the main device such as the amplifier when the devices are combined with each other. Can be supplied to each device (tuner, tape recorder), etc., and can be easily supplied to each device by a DC stabilized power supply, etc., which is generally commercially available on the service bench etc. in the production process or at the time of failure repair. It can be provided at low cost power connection device, such as an acoustic device which can be fed by a simple structure.

A second embodiment of the present invention will be described below with reference to the drawings.

FIG. 4 is a block diagram of a main part of a power supply connection device for audio equipment and the like showing a second embodiment of the present invention.

In the figure, the same components as those in FIG. 1 are designated by the same reference numerals, and the difference from the configuration in FIG. 1 is that an AC power or DC power supply terminal 5 is provided after the power switch 7. is there.

The operation of the power supply connection device for audio equipment and the like configured as described above will be described below.

First, when the devices are used in combination with each other, the AC power on the secondary side of the power supply transformer is supplied to the main body 1 of each device (tuner, tape recorder) or the like through the AC power supply terminal 4 from the main device such as an amplifier. Then, it is supplied to the rectifier circuit 2 via the power switch 7 and the AC power or DC power supply terminal 5, converted into DC power by this, and then supplied to the load circuit 6.

Next, when DC power is supplied to an AC power supply or a DC power supply terminal provided on the printed wiring board 3 inside the device body 1 by a service bench or the like during a production process or a repair, the power switch of the body 1 is turned on. Rectifier circuit 2 independent of 7
AC power or DC power can be directly supplied to

As described above, the power switch is provided in the input system path of the rectifier circuit via the AC power supply terminal, and the AC power or the DC power supply terminal is provided after the power switch, so that the power switch of the device body is AC power or DC power can be directly supplied to the rectifier circuit regardless of the situation. Especially, in the production process, etc., when this is performed using an automatic machine, the open / closed state of the power switch can be confirmed or operated in parallel. It is not necessary, and the automatic machine configuration can be simplified.

As described above, the present invention includes the main body, the rectifier circuit that receives the AC power on the secondary side of the power transformer from the outside of the main body and converts the AC power into the DC power, and the printed wiring board on which the rectifier circuit is mounted. , An AC power supply terminal having one end connected to an input path of the rectifier circuit and the other end drawn out from the inside of the main body, and the AC power supply or the DC power supply terminal in parallel with the AC power supply terminal. By installing on the printed wiring board inside, even if the power transformer for each device is abolished, the AC power on the secondary side of the power transformer can be isolated from the main device such as amplifier when the devices are combined with each other. It can be supplied to equipment (tuner, tape recorder), etc., and can be easily supplied to each equipment by a DC stabilized power supply, etc., which is generally commercially available at the service vest etc. for the production process or failure repair. Can be provided and its industrial value is enormous.

[Brief description of drawings]

FIG. 1 is a block diagram of a main part of a power supply connecting device for audio equipment and the like according to a first embodiment of the present invention, FIG. 2 is a rear view showing connections between audio equipment according to the first embodiment, and FIG. Is a connection diagram showing a DC power supply method in the first embodiment,
FIG. 4 is a block diagram of a main part of a power supply connection device for audio equipment and the like in the second embodiment, FIG. 5 is a block diagram of a main part of a power supply connection device for conventional audio equipment, and FIG. It is a rear view which shows the connection between apparatuses. 1 ... Audio equipment main body, 2 ... Rectifier circuit, 3 ... Printed wiring board, 4 ... AC power supply terminal, 5 ... AC power or DC power supply terminal, 6 ... Load circuit.

Claims (2)

[Scope of utility model registration request] 1. A main body, and a rectifier circuit that receives AC power on the secondary side of a power transformer from the outside of the main body and converts it to DC power.
A printed wiring board on which the rectifier circuit is placed; and an alternating current power supply terminal, one end of which is connected to an input path of the rectifier circuit and the other end of which is drawn out from the inside of the main body. A power supply connection device for an audio device or the like in which AC power or DC power supply terminals are provided in parallel on the printed wiring board inside the main body. 2. A utility model registration claim in which a power switch is provided in an input path of a rectifier circuit via an AC power supply terminal, and an AC power or DC power supply terminal is provided after passing through the power switch. Power supply connection device for the described audio equipment.