JPS6133026A - Power supply unit - Google Patents

Abstract

PURPOSE:To simplify the constitution of a power supply unit and to integrate the wiring by providing a secondary winding for transformation and rectification and a secondary winding for transmission and reception of data separately from each other to a transformer whose primary winding is connected to a commercial power supply. CONSTITUTION:A power supply plug 1 is put into a commercial power supply socket 2, and a primary winding 6 of a transformer 5 wired to the plug 1 via a cord 3 is connected to a commercial power line 4. The transformer 5 contains a secondary winding 8 which is connected to the winding 6 and produces the voltage accordant with a winding ratio and a secondary winding 11 for data. The winding 8 is connected to a DC voltage generating circuit 9, and the circuit 9 outputs the DC power of various types of voltage to an output terminal 10 and a power supply line 7. The winding 11 is connected to a data modulation/demodulation circuit 12. The circuit 12 demodulatates the data modulation signal superposed on the line 4 and outputs it as a data signal 13. Then a data input signal 14 undergoes the modulation of frequency and is sent to the line 4 via windings 11 and 6.

Description

Detailed Description of the Invention (Industrial Application Field) This invention relates to a power supply unit that has an interface function between an information processing device and a power line that transmits and receives data via a commercial power line used in ordinary homes. (Prior art and its problems) Conventionally, commercial power lines installed in homes and offices have been used to transmit control signals and information equipment for controlling devices over short distances within the house. Various means for transmitting and receiving data signals and the like between each other have been put into practical use.

When connecting a computer, controller, etc. to the power line to send and receive control signals and digital signals, in the conventional system, the signal formula and output of the computer and controller, which are integrated as a single device, must be A configuration is implemented in which a connection adapter configured as a single unit is provided between the terminal and the power line.

The personal computer or controller is provided with a power supply device containing a transformer that transforms and rectifies the alternating current power applied from the power line in order to supply low voltage direct current power to the built-in circuit. There is. On the other hand, a transformer is also provided inside the connection adapter as a coupling means for transmitting and receiving data signals to and from the power line while blocking AC high voltage (100V, 110V, etc.) applied from the power line. In this way, providing separate transformers and power line connection wiring means for each individual device complicates the system configuration and increases the size and price of the device.

(Object of the Invention) The power supply device of the present invention eliminates these conventional drawbacks, simplifies these devices, integrates wiring, etc., and makes the device more economical. The purpose of the present invention is to provide a power supply unit equipped with the following functions.

(Structure of the Invention) According to the present invention, a commercial AC direct pressure 8
An element that inputs power from the power source through the tunyuan plug and power cord and applies it to the primary winding coil of the transformer;
A power supply secondary winding that outputs a transformed AC voltage from the secondary winding of the transformer in accordance with the turn ratio with respect to the primary winding, and based on the transformed AC voltage, An element that outputs a direct current of a predetermined voltage from the rectifier circuit, a secondary winding for data provided in the transformer for transmitting and receiving a modulation signal on the output line, and an element that outputs a direct voltage of a predetermined voltage from the a modulating means for modulating an analog or digital data signal and applying the modulated signal to the data secondary winding; To provide a power supply unit provided with a pig transmitting/receiving means configured by integrating a modulation/demodulation circuit made of demodulated biomembrane which outputs an output.

(Principle of the Invention) The present invention solves the problems of the prior art by adopting the above-described configuration. A primary winding, a secondary winding for power supply, and a secondary winding for data are installed in one transformer. By incorporating the data transmitting/receiving circuit in the body, sharing the power cord and power outlet for connecting to the power line, and internally wiring the supply of one-page current voltage to the data transmitting/receiving circuit, the power supply Compared to a device in which a device and a data transmitting/receiving device are provided separately, the device can be significantly simplified in structure, downsized, and improved in efficiency.

(Example) An example of the present invention will be described below with reference to the drawings.

FIG. 1 shows a t
d is a circuit configuration diagram of a power supply device. In the figure, 1 is a power plug, which is connected to an external commercial power socket 2, and connected to a commercial power line 4 wired with a power cord 3, and primary windings 6 and 4 of a transformer 5. connected. 8 is a secondary winding for transformation, which is transformer-coupled with the primary winding 6 and generates a voltage corresponding to the turns ratio with the primary winding 6. 'Output DC power of various voltages to the power supply line 7.

Reference numeral 11 denotes a secondary winding for data, which is transformer-coupled with the primary winding 6 and connected to a data modulation/demodulation circuit 12. The data modulation/demodulation circuit 12 has a power f! 4 to power socket 2
and power plug 1. O
i key, analog or digital data signal signal 13
Appear as a. Roughly speaking, the data modulation/demodulation circuit 12 frequency-modulates the analog or digital data signal 14 inputted from the outside, and converts the modulated signal into a secondary winding for data! 11 and primary winding 6, power cord 3. Kamegen plug 1
．． The power is sent to the power line 4 via the sleep source socket 2. Next, FIG. 2 is a circuit configuration diagram of a power supply unit using a transformer having two systems of primary windings according to the present invention, where 201 is the primary winding for transformation and is connected to the secondary winding 8 for transformation by the transformer. A voltage corresponding to the winding ratio is generated in the secondary winding 8. 202 is the primary winding for data and the secondary winding for data il
The carrier signal shown in FIG. Other configuration details are the same as the power supply shown in FIG.

1 is the source plug, 3 is the 1# cord, 5 is the transformer, 7 is the power line, 9 is the DC voltage generation circuit section, 1O is the output terminal,
12 is a modulation/demodulation circuit element, 13 is a data output signal, 1
4 is a data input signal.

In addition, the ground wire is omitted in Figures 1 and 2, but
This ground line is common to the DC voltage output terminal 10, data output signal 13, and data input signal 14.

Next, FIG. 3 is a circuit configuration diagram in which the DC' heavy pressure generating circuit section 9 shown in FIGS. 1 and 2 is constructed by a switching regulator. In the diagram: Power plug 1
, socket 2, power cord 3, commercial power,! l! 4, transformer 5, primary winding @6, power line 7° secondary winding for transformation 8,
DC voltage generation circuit section 9, output terminal 10. The data secondary winding in, the modulation φ dredging circuit 12, the data output signal 13, the data input signal 14, etc. are the same as the component group shown in FIGS. 1 and 2. 300 is a part of a switching regulator, which outputs a predetermined pressure a by switching the input alternating voltage into a rectified sickle using a switching element and then smoothing it. 301 is a noise filter,
In the switching regulator part 300, noise generated due to switching of the switching element is transmitted to the power line 4 and the secondary winding 11 for data via the secondary winding 8.
Prevents leakage to the sides.

Here, by configuring the DC voltage generation circuit section 9 with the switching fist regulator 300, it is possible to omit the iron core in the transformer 5, and the transformer 5 can be configured with a significantly smaller size. The device of the invention can also be miniaturized.

In the first, second, and third embodiments, an FM modulation/demodulation circuit is used as the modulation/demodulation circuit, but this does not limit the present invention. It can be easily applied even when using a modulation method, a pulse modulation method, a spread spectrum method, or the like. These detailed modifications can be easily deduced by combining the present invention and the prior art, and will not be described in detail here.

(Effects of the Invention) As described above, according to the device of the present invention, power line data
It is possible to provide a power supply unit that is useful for realizing various types of simple and economical electronic devices that have data transmission and reception functions through transportation.

[Brief explanation of the drawing]

is a socket, 3 is a power cord, and 4 is a commercial power line. 5 is a transformer, 6 is a primary winding, 7 is a power supply line, 8 is a secondary winding for transformation, 9 is a DC 1 voltage generation circuit section, 10 is an output terminal,
11 is a data secondary winding coil, 12 is a modulation/demodulation circuit, 13 is a data output signal, 14 is a data input signal, 2
01 is the primary winding for transformation m, 202 is the secondary winding for data,
300 represents a switching regulator, and 301 represents a noise filter.

Claims (1)

[Claims] (a) A primary winding connected to a power line is connected to a power supply secondary winding involved in AC voltage transformation, and a data secondary winding for bidirectional transmission of modulated signals. (b) a power supply section that transforms and rectifies the AC voltage supplied through the transformer and outputs a DC voltage; (c) a power supply section that is connected to the secondary winding for data and that is connected to the secondary winding for data when transmitting data; A modulation system that modulates a signal input from the outside and transmits the modulated signal to the power supply line via the transformer, and demodulates the modulated signal received via the transformer during reception and outputs the demodulated signal to the outside. A power supply unit comprising at least a demodulation circuit.