RU13729U1 - NETWORK SUPPRESSION DEVICE - Google Patents

Abstract

A network noise suppression device comprising two semiconductor voltage limiters, first and second LED crystals, first and second diodes and first and second resistors, the semiconductor voltage limiters being connected in series and opposite each other between the wires through which the supply voltage to the electronic device is supplied, first the LED chip, diode and resistor are connected in series and form the first LED circuit in which the LED chip and diode are connected according to Namely, the second LED crystal, diode and resistor are connected in series and form the first LED circuit in which the LED crystal and diode are connected in series, the first and second LED chains are connected in series between the wires that supply the voltage to the electronic device, the first and second LED crystals are connected opposite each other and one of the terminals of the first LED chip is connected to one of the terminals of the second LED chip, the connection point is half-wire nickel voltage limiters connected to the connection point of the LED circuits, the polarity of the connected terminals of the semiconductor voltage limiters are opposite to the polarities of the connected terminals of the LED crystals, characterized in that the two LED crystals are located in one housing, which contains a focusing hemisphere and a focusing lens having a common geometric axis, which is also the axis of the LED housing, and two LED crystals have different glow colors and are located on the foc

Description

Network Noise Reduction Device

The utility model relates to electrical engineering, and in particular, to protection devices for electronic devices connected to an alternating current network.

It is known that in an alternating current network with a voltage of 220 (127) V (and in other networks), high-frequency overvoltages up to 500 V and more occur, short-term pulses with an amplitude of more than 1 kV are possible. In networks with a relatively low voltage (for example, 5V), high-voltage pulses will already be 20, 100 V. These bursts of voltage passing through the power source can damage semiconductor devices and microcircuits or cause malfunctions of electronic devices.

To prevent overloading, special circuits are used with gas dischargers, varistors, zener diodes. But all these devices have a large interelectrode capacitance, limiting their use at high frequencies (V.A. Kolosov, Power supply of stationary radio-electronic agrate). Moscow, Radio and Communications, 1992, p. 111).

Therefore, to protect radio-electronic devices from high-frequency. Overvoltages in the network, semiconductor limiters of 1 voltage (limit diodes), which have high-frequency properties, are used. Semiconductor voltage limiters break through in s; 1 case of applied to them voltage exceeding the value of their breakdown voltage. Network Noise Reduction Device Using

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semiconductor voltage limiters (analogue) can be found, for example, in the Handbook of Electronic Devices for Protecting CEA from Electrical Overloads, authors V.P. Cherepanov, A.K. Khrulev and I-PBludov, Moscow, Radio and Communications, 1994 (p. 422, Fig. 10.6).

Network noise suppression device contains two

semiconductor voltage limiters connected in series and counter to each other and connected between conductors through which a supply voltage is supplied to the electronic device. When an overvoltage appears in the network, one of the semiconductor voltage limiters is in a conducting state, and the other breaks briefly, while the overvoltage pulse is limited and does not lead to interference or malfunctions in the electronic device. Two voltage limiters connected in series and opposite to each other can be made in the form of a single device - a symmetrical half-phase limiter of 11 voltage, while the connection point of the limiters is displayed.

However, if one of the voltage limiters fails (an open in it, for example, during a short circuit due to a large current), the power of the electronic device will not be disrupted, but the device will be deprived of surge protection. A malfunction in the protection device is thus not detected immediately and therefore not eliminated. This reduces the reliability of electronic equipment.

In the known utility model, the Device for the protection of radio-electronic gfibor (certificate for utility model No. 6951, publication in the bulletin. No. 6 for 1998) solves the technical problem of increasing the reliability of electronic agronomy by introducing

light indication of serviceability or malfunction of the device for protection of the electronic device. In addition, more favorable operating conditions for electronic equipment are provided due to interference suppression. According to certificate 6951 (which is a prototype), the device for zapsts of a radio electronic device contains two voltage limiters connected in series and opposite to each other and connected by conductors, through which the supply voltage to the electronic device is supplied, while it also contains the first and second LED crystals, the first and the second diodes and the first and second resistors, the first resistor, the first diode and the first LED crystal are connected in series and form the first LED circuit, the second a resistor, a second diode and a second LED crystal are connected in series and form a second LED circuit, both LED chains being connected in series and connected to the conductors that supply voltage to the electronic device, while the first LED crystal and the first diode are connected in concert with each other, the second LED the crystal and the second diode are connected in harmony with each other, the LED circuits are interconnected so that the first and second LED crystals. 11 are switched on one against the other a friend, and the connection point of the LED circuits is connected to the connection point of the semiconductor voltage limiters, and the polarities of the terminals of the LED crystals connected to the connection point of the LED crystals are opposite to the polarities of the terminals of the voltage limiters connected to the connection point of the voltage limiters.

The known device for suppressing network interference, used to protect the electronic device from short-term overvoltages in the AC power network, has the disadvantage that each LED crystal is located in a separate housing, which increases the dimensions of the device and reduces its reliability.

Thus, the technical problem solved by the proposed utility model is to reduce the dimensions of the device and increase its reliability.

The essence of the proposed utility model is. that the network noise suppression device contains

two semiconductor voltage limiters,

first and second LED crystals,

first and second diodes and first and second resistors,

moreover, the semiconductor voltage limiters are connected in series and counter to each other between the wires through which the supply voltage to the electronic device,

the first LED crystal, the diode and the resistor are connected in series and form the first LED circuit in which the LED crystal and are connected in concert,

the second LED crystal, the diode and the resistor are connected in series and form the first LED circuit in which the LED crystal and the diode are connected in concert,

The first and second LED circuits are included sequentially between the wires through which the supply voltage to the electronic device is supplied.

the first and second LED crystals are turned on one against the other and one of the terminals of the nerve LED crystal is connected to one of the terminals of the second LED crystal,

the connection point of the semiconductor voltage limiters is connected to the connection point of the LED circuits,

the polarity of the connected terminals of the semiconductor voltage limiters are inverse to the polarities of the connected terminals of the LED crystals. The proposed device is characterized in that the two LED crystals are located in a single housing, which contains a focusing hemisphere and a focusing lens having a common geometric axis, which is also the axis of the LED housing, and two LED crystals have different glow colors and are located on the focusing hemisphere symmetrically with respect to the geometric axis, and with the simultaneous illumination of LED crystals, the color of the LED glow by mixing different colors of the glow of individual LEDs x crystals is different from the colors of the glow of LED crystals.

The proposed useful mode 11b is illustrated by the drawings in FIG. 1, where the proposed network interference suppression device is shown, and FIG. 2, which shows the location of the focusing .block, the focusing hemisphere and LED crystals in the LED housing.

The following notation is used in the figures:

1- AC power supply;

2- electronic device;

3- semiconductor voltage limiter;

4- conductors through which the supply voltage to the electronic device;

5 - the first LED crystal;

6 - the first resistor;

7 - first diode;

8- second LED crystal;

9- second resistor;

10 - second diode;

11- point LED linker

12- point of connection of voltage providers;

13- LED;

14- LED housing;

15- focusing lens;

16- focusing hemisphere;

17 - geometric axis;

18- distance from the LED crystal to the geometrical axis.

In FIG. 1 showing the device for suppressing network interference in the AC power supply network 1, which can damage the electronic gfibor 2. The AC voltage is supplied through the conductors 4. Voltage limiters 3 are connected in series and opposite each other} They are connected between the conductors 4, through which supply voltage to the electronic device 2.

The network noise suppression device comprises a first LED chip 5 and a second LED chip 8 (having a different glow color).

the first resistor 6 and the second resistor 9, the first diode 7 and the second diode 10. The first resistor 6, the first LED chip 5 and the first diode 7 are connected in series and form the first LED circuit. The second resistor 9, the second LED chip 8 and the second diode 10 are connected in series and form a second LED circuit. Both LED circuits are connected in series and connected to conductors 4. The first LED chip 5 and the first diode 7 are connected in concert with each other (i.e., the positive terminal of the LED chip 5 with the negative terminal of the diode 7). The second LED chip 8 and the second 10 are also connected in concert with each other. The first and second LED circuits are connected so that the first 5 and second 8 LED crystals are connected opposite each other, and the connection point 11 of the LED circuits is connected to the connection point 12 of the pressure limiters. The polarity of the terminals of the LED crystals 5 and 8 connected to the point 11 is opposite to the polarities of the voltage limiters 3 connected at the point 12.

In FIG. 2 shows the combination of the LED crystals 5 and 8 in the housing 14 of the LED 13. The housing 14 has a geometrical axis 17 of the focussing bar 15 focusing along the 11 sphere 16, which are symmetrically located on the geometrical axis 17 of the two LED crystals 5 and 8, which have different glow color. The focusing sphere 16 is mounted inside the housing 14 of the LED 13. The distance between the LED crystal and the geometric axis 17 may be equal to, for example, 0.25 mm with a diameter of 5 mm of the housing 14. The front transparent convex surface of the housing 14 of the LED 13 is made in the form of a focusing lens fifteen.

The operation of the proposed device is described below.

The voltage of the AC power supply from the network 1 passes through the conductors 4 to the radio electronic device 2. During normal operation of the AC power supply, during the positive period of the mains voltage (on the upper wire 4 - plus), the upper (in the figure of Fig. 1) load limiter 3, included in this floor, the period in the forward direction, conducts current, and the second of the providers of voltage 3 (in the figure of Fig. 1 is the lower one), turned on counter to the upper one, is closed. The current passing through the upper voltage limiter 3 passes through the second (lower) LED circuit with a diode 10, an LED chip 8, and a resistor 9. During the passage of the current, the LED chip 8 lights up. When there is a negative half-period of the mains voltage (on the upper wire 4 ) the current is supplied by the second (lower) voltage limiting gel 3. In this case, the current passes through the first (upper on the figure) LED circuit - the first diode 7, the first LED crystal 5 and the first resistor 6. LED crystals 5 and 8 of uchayut poperemeshyu light in accordance with a variety of polarities Changing the voltage that pr1shodkt yulucheny to mixing them, and the observer sees a mixed color different from the colors of LED luminescence of both crystals. The mixed color of the glow of the LED 13 indicates the absence of breaks in the current circuits of voltage balancers 3

With a short-term overvoltage in the AC power supply network exceeding the permissible reverse voltage limited by voltage gels 3, most of them, turned on in the forward direction, conducts current, and the second momentarily breaks through and thereby limits the pulse

overvoltage (high voltage interference) in the network and does not pass it to aimapaType 2. In this case, the short-term absence of the glow of one of the LED crystals is not perceived by the human eye. If the power of the interference pulse does not exceed the threshold power of destruction of the limiter and voltage, then the operation of the network noise suppression device continues normally.

If the power of the interference pulse (overvoltage pulse) exceeds the power corresponding to the threshold of destruction of the voltage waiter, then one of the voltage limiters fails (burns out). In this case, the current does not pass through one hectare of voltage limiters and one of the LED crystals will not glow. If the upper voltage limiter (in the figure) does not conduct current, the light-emitting diode crystal 8 ceases to glow, and vice versa. In this case, the color of the glow of the LED 13, perceived by the operator, will change, which indicates a malfunction of the device for suppressing network interference. The electronic equipment will work, but will not be protected from high-voltage interference pulses. Es.1Sh LED 13 does not light at all, this means that both voltage limiters are out of order. The operator can replace the defective jammer.

Diodes connected in series with the LED crystals 5 and 8; about 1 7 and 10 provide the possibility of using .1 In the proposed device, cheaper LED crystals 5 and 8 with a low permissible reverse voltage, for which diodes 7 and 10 must have a higher value of the allowable reverse voltage than used LED crystals.

from the point of view of industrial feasibility of the proposed device, it can be manufactured using widely distributed elements. If necessary, the manufacture of the device lends itself to automation.

Structurally, it is advisable to place the device in a small-sized sealed enclosure with the subsequent filling of radio elements, moreover, the device’s housing will have two outputs for connecting to the network wires and protruding luminous parts of the LED 13.

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Claims (1)

A network noise suppression device comprising two semiconductor voltage limiters, first and second LED crystals, first and second diodes, and first and second resistors, the semiconductor voltage limiters being connected in series and opposite each other between the wires through which the supply voltage to the electronic device is supplied, first the LED chip, diode and resistor are connected in series and form the first LED circuit in which the LED chip and diode are connected according to Namely, the second LED crystal, diode and resistor are connected in series and form the first LED circuit, in which the LED crystal and diode are connected in series, the first and second LED chains are connected in series between the wires that supply the voltage to the electronic device, the first and second LED crystals are connected opposite each other and one of the terminals of the first LED chip is connected to one of the terminals of the second LED chip, the connection point is half-wire nickel voltage limiters connected to the connection point of the LED circuits, the polarity of the connected terminals of the semiconductor voltage limiters are opposite to the polarities of the connected terminals of the LED crystals, characterized in that the two LED crystals are located in one housing, which contains a focusing hemisphere and a focusing lens having a common geometric axis, which is also the axis of the LED housing, and two LED crystals have different glow colors and are located on the foc siruyuschey hemisphere symmetrically relative to the geometric axis and illumination of the LED, while the LED crystals luminescence color by mixing different colors of LED luminescence of the individual crystals is different from the colors of the LED crystals.