KR20160004522U - Electromagnetic Damping Electric Stack Power Supply - Google Patents

Abstract

According to a feature of the present invention, in a DC power supply circuit for supplying a DC driving power required for an electrometer to an electrometer, a commercial power is applied to the commercial power input terminal 100 to be supplied with commercial power, A capacitor 113 for reducing the voltage of the commercial power source to a predetermined voltage value; A rectifying circuit 119 connected to the output terminal of the capacitor unit 113 and rectifying the applied AC power to a DC; The rectifier circuit 119 is connected to the output terminal of the rectifying circuit 119 and receives rectified DC power to output a driving power having a required voltage value to the metris part 127. The resistance of the PTC 126 in response to the temperature rise of the metris part 127 The TR bias is changed in accordance with the PNP TR 123 characteristic and the PNP TR 123 is activated so that the voltage is supplied to the power supply interrupting relay 118 and the relay 118 is operated, The PNP TR 123 is turned off and the PNP TR 123 is turned off again. When the resistance value of the PTC 126 returns to the original state, the PNP TR 123 base voltage is increased, The power shutdown relay 118 is deenergized by the PNP TR and the power shutdown relay is restored to its original state and then the power is applied to the rectifying circuit portion 122 so that the DC voltage is applied to the mattress portion 127 and the electromagnetic wave is attenuated Driving voltage output A power supply circuit for supplying a circle is provided.

Description

ELECTROMAGNETIC WAVE ELECTRICAL POWER SUPPLY {omitted}

More particularly, the present invention relates to a power supply apparatus for a general electric power board, and more particularly, an apparatus for generating a residual wave by controlling a voltage by making a phase difference between an applied commercial power source and an existing triac or SCR, To a power supply circuit for converting a voltage required for a mat into a DC form by supplying a voltage drop to an AC impedance (XC) value of the capacitor.

Generally, an electric meter uses a temperature controller, which uses a characteristic of SCR / TRIAC to drop a voltage by phase control, and generates a large amount of electromagnetic waves to be converted into a hot water metro. Existing thermostat See Figure 1

As a result of this experiment, we have experimented with electric mats driven by pure DC to break away the triac, which is the cause of electromagnetic wave,

When the direct current voltage was varied by adding borium, there was heat loss of TR or FET. See Figures 2 and 3

There was no practicality because TR and FET required a large heat sink for temperature control

[Prior Art Literature]

The present design is the standard to be an object of the present invention to provide relatively low-cost, yet the voltage drop across the AC resistance value (Xc) of a compact capacitor for use of the voltage as a free porcelain (prior art triac phase control generating in order to solve the above problems A voltage drop is reduced to reduce the electromagnetic wave generated in the phase control and a voltage dropping to XC is converted into a direct current to be supplied to the electrometer so that electromagnetic waves are not induced in the hot wire of the coil component,

According to the feature of the present invention, the voltage of each step of the voltage drop of the alternating current impedance (Xc) (corresponding to the existing product temperature controller ) is changed from 30W to 100W in accordance with the formula 1 Xc = 1 / (2x pi x F x C) (Conduction) value to the bridge rectifier circuit, and supplies it to the electric matt heat line with a pure DC power source, thereby suppressing the radiation of the electromagnetic wave from the heat line. The power supply circuit is connected to the commercial power input terminal 100 so that the commercial power is supplied to the (111) current heater, and the power switch 110 is operated by the inverse- The instantaneous peak value current is suppressed at ON and the peak voltage is suppressed by (120) CNR (114, 115, 116), and a capacitor portion 113 for dropping the voltage of the commercial power source applied by the conductance value to a set voltage value, The rectifying circuit 119 that is connected to the voltage control switch 117 and the protection relay 118 connected to the unit 113 and rectifies the applied AC power to the DC is generated by the charging / discharging effect of the electrolytic condenser 121, And is connected to an output terminal through a circuit, and a DC power supply necessary for the electrometer is provided.

According to another feature of the present invention, in the capacitor 113, the capacitors 114, 115, and 116 connected in series to each other have an AC resistance value Xc and each drop a voltage to a required voltage. It is possible to insert a resistor instead of Xc, which generates heat and becomes bulky due to the resistance of the resistor . In the past, resistors could not be inserted due to heat.

According to an aspect of the present invention, a power supply circuit is provided, wherein the total conductance value of the capacitor unit 113 is determined by the following equation (1).

[Mathematical formula 1]

Xc = 1 / (2 pi x F x C)

→ C (total conductance value) C = 1 / (2 x PI x F x XC)

(Where Xc is the resistance value (impedance) for AC, F is the frequency value of the input power source, and C is the total conductance value)

As described above, according to the present invention,

First, it prevents the generation of electromagnetic waves due to the voltage enhancement by the phase change (cleavage of frequency) of the conventional temperature control triac, and it is possible to constitute a circuit ensuring the stability against EMI because there is no L used part. The product can be miniaturized.

Secondly, the voltage drops to a set voltage value using the conductance value (AC resistance value of the condenser) of the capacitor, thereby preventing the danger of fire or heat loss due to resistance heating.

Third, since the capacitor unit 110 having a conductance value for voltage drop is arranged in a circuit in a non-polar circuit connection manner in series, the component cost can be greatly reduced while implementing the same voltage drop function as a large capacity resistor for voltage up and down. (2.29mG when 140W is improved)

1 is a circuit diagram showing a configuration of a direct current power supply circuit for an electric meter according to a preferred embodiment of the present invention.

The objects, features and advantages of the present invention will become more apparent from the following detailed description. Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

The DC power supply circuit according to a preferred embodiment of the present invention includes a rotary switch (push switch) 117 and an Xc capacitance value of each (113) non-polar capacitor to supply a rated voltage that is lowered in voltage to the conventional electrometer (117) rotary switch portion and (113) condenser portion as shown in FIG. 1) and a rectifying circuit portion (122) as shown in FIG.

First, the capacitor 113 is a circuit configuration for dropping the applied commercial power. The commercial power input 100 is connected to the AC 220 V and the commercial power is applied to the (111) current fuse. The conductance value Value) of the commercial power supply to the set voltage value (117) by the rotary switch.

More specifically, as shown in FIG. 1, the capacitor unit 113 is disposed on the circuit line between the commercial power source and the rectifying circuit unit 122, and is connected to the capacitor unit connected in series by the rotary switch (117) 113). The total conductance value C of the capacitor unit 113 can be determined by the following equation (1).

[Equation 1]

Xc = 1 / (2 pi x F x C)

→ C = 1 / (Xc × 2π × F).

(Where Xc is the resistance value (impedance) for AC, F is the frequency value of the input power source, and C is the capacitor value)

Therefore, in the voltage drop power supply circuit for the electromet, the AC resistance value of the entire conductance value of the capacitor section 113 is used as a means for providing the AC resistance value for the voltage drop for this operation. .

Therefore, the voltage can be reduced to the XC value set in the capacitor 113.

As described above, the capacitor 113 having the conductance value for the voltage drop can greatly attenuate the electromagnetic wave while realizing the same voltage drop function as in the case of using the capacitor connected in series and the conventional triac temperature regulator .

The rectifying circuit part 122 is connected to the output terminal of the capacitor part 113 and rectifies the applied AC power to DC. As shown in FIG. 1, a rectifier bridge diode 119 for converting a plurality of diodes into a bridge circuit to convert an AC waveform to a DC waveform, a smoothing capacitor 121 for smoothing an AC component included in the rectified power, As shown in FIG.

A PTC 112 is disposed on a circuit line between the commercial power source 100 AC 220 V and the condenser unit 113 and a CNR 120 is connected to the circuit line between the condenser unit 113 and the rectifier circuit 119. And a power switch 110 for controlling on / off driving of the electrometric power supply circuit may be provided between the commercial power input terminal (AC 220 V) and the PTC 112.

The CNR 120 functions to protect circuit components such as diodes, transistors, and ICs by absorbing surge voltages and currents with a varistor element, and the transistor 123 is connected to the PNP tran- The protection circuit was made using the characteristics of the gyroscope.

Assuming that an overcurrent flows in the heat transfer mat, the + voltage is attenuated through the variable resistor 124 to the base of the PNP TR 123 using the characteristic that the resistance value is reduced by the heat of the PTC 126, The relay 118 is actuated to turn off the relay 118 from the protection circuit part 128 to remove the power from the selection switch 117. As a result, And fire can be prepared in advance.

By the respective constitutions and functions of the power supply circuit for an electric meter according to the preferred embodiment of the present invention as described above, the temperature regulator for generating electromagnetic waves by voltage drop with the phase difference of the conventional triac is replaced, Capacitors and bridge diodes can be used to construct the circuit, thus reducing manufacturing costs while reducing electromagnetic waves and miniaturizing the product.

Further, the voltage drops to a set voltage value using the conductance value (AC resistance value of the condenser) of the capacitor, so that the risk of fire or heat loss due to the resistance heat generation in the related art can be prevented in advance.

It will be understood by those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. It will be apparent to those of ordinary skill in the art.

100 ... Commercial power input terminal 112 ... NTC (resistance value decrease during temperature rise)
113 ... capacitor section 118 ... power-off relay section
122 ... rectifying circuit part 123 ... PNP TR
126 ... PTC (increase in resistance value when temperature rises) 127 ... electric mattress part
128 ... overheat protection circuit

Claims (3)

1. A power supply circuit for supplying DC driving power required for an electric meter,
A capacitor unit 113 connected to the commercial power input terminal 100 to apply a commercial power source and drop the voltage of the commercial power source applied by the conductance value to a predetermined voltage value; A rectifying circuit part 122 connected to the output terminal of the capacitor part 113 and rectifying the applied AC power to direct current;
And a driving power source connected to the output terminal of the rectifying circuit section (123) and having a voltage value required for the electrometer, the rectifier being supplied with rectified DC power. The method according to claim 1,
The condenser unit 113,
Characterized in that the circuit arrangement is arranged in a non-polar manner in which individual required voltage drops are made with the ac resistances (XC) of the non-polar capacitors connected in series. 3. The method of claim 2,
The non-polar capacitors 114, 115, and 116 have respective conductance values,
Wherein the total conductance value of the capacitor unit (113) is determined by the following equation (1).
[Mathematical formula 1]
Xc = 1 / (2 pi x F x C)
→ C = 1 / (Xc × 2π × F).
(Where Xc is the resistance value (impedance) for AC, F is the frequency value of the input power source, and C is the total capacitance value r)

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