JPH0562151U - Multi power supply switching device - Google Patents

Abstract

(57) [Abstract] [Purpose] In a device that has two power transformers, a sub transformer for remote control and a main transformer for amplifier,
It facilitates switching of the primary side of each transformer for different primary power supplies. [Structure] The switching method of the primary power supply is changed depending on the magnitude of the current capacity of the two power transformers T1 and T2, that is, one circuit S1-1 is used for the primary switching for the sub transformer having a small current value, and the current value For large main transformers, by providing two winding taps that are half the maximum applied primary voltage, these windings are switched in series when a high primary voltage is applied and in parallel when a low primary voltage is applied. It is characterized in that it is configured by two circuits S1-2 and S1-3 to be used and a total of three circuits, and the switches of these three circuits are made into one-body switch S1 and linked with all three circuits.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a multi-power supply switching device such as an audio device having a changeover switch on the device body side corresponding to different primary power supplies.

[0002]

[Prior Art]

 In recent years, the multi-power supply switching device is required to be more and more simplified.

An example of the above-mentioned conventional multi-power source switching device will be described below with reference to the drawings.

FIG. 2 shows a circuit configuration of a conventional multi-power source switching device. In FIG. 2, T1 is a sub transformer for remote control, T2 is a main transformer for amplifier, 9, 10, 11 are connection pins on the side of the sub transformer T1, 12, 13, 14, 15, 16, 18, and 19 are: This is a connection pin on the main transformer T2 side. Further, S2 and S3 are primary voltage changeover switches, 1 to 8 are internal connection pins of the primary power supply changeover switch S3, 20 and 21 are switching pieces thereof, S4 is an opening / closing switch by a power relay, and F1 and F2 are A current fuse, F3 is a built-in thermal fuse, and 17 is an AC plug.

[0005]

[Problems to be solved by the device]

 However, in the conventional multi-power source switching device as described above, the primary side switching switch S2 on the sub-transformer T1 side and the primary switching side on the main transformer T2 side are provided in order for the customer side to support the primary voltage suitable for the region. There is a problem that it is necessary to switch two switches S3.

In view of the above conventional problems, the present invention has been made for the purpose of providing a simple multi-power supply switching device having only one changeover switch.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the multi-power supply switching device of the present invention is a device having two power supply transformers, a sub-transformer T1 for remote control and a main transformer T2 for amplifier. By providing one circuit S1-1 for primary switching on the small remote transformer sub transformer T1 side and two winding taps of half the maximum primary voltage on the amplifier main transformer T2 side with a large current value, When the primary voltage is high, these windings (between 13-14 and 15-16) are switched in series, and when the primary voltage is low, two circuits S1-2 and S1-3 are used which are switched in parallel. It is characterized in that the switches (S1-1, S1-2, S1-3) of these three circuits are made into one-body switch S1 and are also interlocked with the three circuits.

[0008]

[Action]

 According to the present invention, by changing the switching method of the primary power source according to the magnitude of the current capacity values of the two power transformers T1 and T2, and by linking the switching circuit as the one-piece switch S1, the present invention is realized. The switch switching operation on the side is done once, which simplifies the operation. On the device side, the switch space and the cost are reduced to two, which is a significant improvement.

[0009]

【Example】

 Hereinafter, an embodiment of the multi-power source switching device of the present invention will be described in detail with reference to FIG.

FIG. 1 shows a circuit configuration of a multi-power source switching device according to an embodiment of the present invention. In FIG. 1, T1 is a sub transformer for remote control, T2 is a main transformer for amplifier, 9, 10, 11 are connection pins on the side of the sub transformer T1, 12, 13, 14, 15, 16 are connections on the side of the main transformer T2. It's a pin. Further, S1 is a primary changeover switch, S1-1, S1-2, S1-3 are interlocking switches inside S1, S4 is an opening / closing switch by a power relay, F1 and F2 are current fuses, F3 is a temperature fuse built in T2, 17 is an AC plug.

The operation of the multi-power source switching device configured as described above will be described below.

First, a case where a high primary voltage of 220 V or 240 V is applied to the AC plug 17 will be described as an example with reference to FIG. The applied high primary voltage is applied to the connecting pin 9 of the sub-transformer T 1 for the remote controller by setting the primary changeover switch S1-1 to the H side in FIG. 1, and the secondary side in this normal operation state. The power-on control from the remote control circuit turns on the open / close switch S4 by the power relay. When S4 is turned on, the applied high primary voltage passes through the current fuse F1 and is applied to the connection pin 12 of the main transformer T2 for the amplifier. At this time, both of the winding taps 13-14 and 15-16 in the main transformer T 2 are set to ½ of the maximum applied primary voltage, that is, 120 V, and the primary changeover switches S1-2 and S1- By setting both of the three to the H side in FIG. 1, the winding taps 13-14 and 15-16 in the T2 are connected in series to meet the desired primary voltage. In the case of serial connection, the current value is halved, so the circuit is configured to pass through the current fuse F2 for protection. Further, when a low primary voltage, that is, 110 V or 120 V is applied to the AC plug 17, by similarly setting the primary changeover switches S1-1, S1-2, S1-3 to the L side in FIG. , Now the winding taps 13-14 and 15-16 in the main transformer T2 are connected in parallel to suit the desired primary voltage. As described above, according to the configuration of FIG. 1, the primary switching switches S1-1, S1-2, and S1-3 can all be set in the same direction depending on the level of the primary voltage. By using the next changeover switches S1-1, S1-2, S1-3 as the one-piece switch S1 and interlocking with the three circuits, the multi-power source changeover device can be operated by one operation.

As described above, according to the present embodiment, the power source transformer is configured with a simple configuration in which the primary changeover switches S1-1, S1-2 and S1-3 are one-body switches S1 and three circuits are also interlocked. It is possible to simplify the switching of multiple power supplies for a device having two devices.

[0014]

[Effect of the device]

 As described above, according to the present invention, in a device having two power supply transformers, a remote control sub-transformer T1 and an amplifier main transformer T2, the remote-control sub-transformer T1 side having a small current value corresponds to different primary power supplies. For the primary switching of 1 circuit S1-1, and for the main transformer T2 side for the amplifier with a large current value, two winding taps that are half the maximum primary voltage are provided. The windings (between 13-14 and 15-16) are composed of two circuits S1-2 and S1-3 that are used in series and switched in parallel at a low primary voltage, and a total of three circuits, and The switch (S1-1, S1-2, S1-3) of these three circuits is made into a one-piece switch S1, and a simple configuration in which all three circuits are interlocked with each other simplifies switching of multiple power sources, and the device main body side. In Over the scan factor improvement and cost reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a multi-power source switching device according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a conventional multi-power source switching device.

[Explanation of symbols]

 9 connection pin 10 connection pin 11 connection pin 12 connection pin 13 connection pin 14 connection pin 15 connection pin 16 connection pin 17 AC plug T1 sub transformer for remote control T2 main transformer for amplifier S1 primary changeover switch S1-1 S1 internal Primary changeover switch S1-2 Primary changeover switch inside S1 S1-3 Primary changeover switch inside S1 F1 Current fuse F2 Current fuse F3 Temperature fuse

Claims (1)

[Scope of utility model registration request] 1. A device having two power supply transformers, a remote control sub-transformer T1 and an amplifier main transformer T2, that is, primary switching on the remote control sub-transformer T1 side having a small current value corresponding to different primary power supplies. 1 circuit S
1-1 and main transformer T2 for amplifier with large current value
On the side, by providing two winding taps that are ½ of the maximum primary voltage, these windings (1
3-14 and 15-16) are connected in series and are switched in parallel at a low primary voltage to be used in two circuits S1-2 and S1.
-3 and a total of three circuits, and the switches (S1-1, S1-2, S1-3) of these three circuits are made into a one-piece switch S1 and linked with all three circuits. Power supply switching device.