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Relay reception switching value increasing input power anti-interference circuit

An input power and relay technology, applied in relays, circuits, electrical components, etc., can solve problems such as malfunction signal input, and achieve the effect of improving input voltage, good anti-interference performance and small size

Pending Publication Date: 2019-05-03
BAODING BOWEI SHINENG ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When this method encounters high-power interference, it will also trigger the relay action, resulting in malfunction signal input

Method used

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  • Relay reception switching value increasing input power anti-interference circuit
  • Relay reception switching value increasing input power anti-interference circuit
  • Relay reception switching value increasing input power anti-interference circuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] refer to image 3 As shown, an anti-jamming circuit for increasing input power by receiving a switching value of a relay includes a disturbance pulse absorbing circuit and a shunt and voltage-dividing relay trigger circuit, and the interference pulse absorbing circuit and the shunt and voltage-dividing relay trigger circuit are connected in parallel;

[0027] The interference pulse absorbing circuit includes a resistor R1, a diode D1 and a capacitor C1 connected in series in sequence, the resistor R2 is connected in parallel at both ends of the capacitor C1, and the resistor R1 and the capacitor C1 are respectively connected to the input terminal KI and the input terminal KI-COM ;

[0028] The shunt and voltage divider relay trigger circuit includes a resistor R3 and a resistor R4 connected in series in sequence. A diode D2 and a relay K1 are connected in parallel at both ends of the resistor R4. The relay K1 controls the start signals of the output terminal KO and the ...

Embodiment 2

[0030] see Figure 4 as shown,

[0031] An anti-jamming circuit for increasing input power by receiving a switching value of a relay, comprising a disturbance pulse absorbing circuit and a shunt voltage-dividing relay trigger circuit, the interference pulse absorbing circuit and the shunt voltage-divider relay trigger circuit being connected in parallel;

[0032] The interference pulse absorbing circuit includes a resistor R1, a diode D1 and a capacitor C1 connected in series in sequence, the resistor R2 is connected in parallel at both ends of the capacitor C1, and the resistor R1 and the capacitor C1 are respectively connected to the input terminal KI and the input terminal KI-COM ;

[0033] The shunt and voltage divider relay trigger circuit includes a resistor R3 and a resistor R4 connected in series in sequence. A diode D2 and a relay K1 are connected in parallel at both ends of the resistor R4. The relay K1 controls the start signals of the output terminal KO and the ou...

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PUM

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Abstract

The invention provides a relay reception switching value increasing input power anti-interference circuit, which comprises an interference pulse absorbing circuit and a current and voltage dividing relay trigger circuit, wherein the interference pulse absorbing circuit and the current and voltage dividing relay trigger circuit are connected in parallel, the interference pulse absorbing circuit comprises a resistor R1, a diode D1 and a capacitor C1 which are sequentially connected in series, a resistor R2 is connected in parallel to both ends of the capacitor C1, the resistor R1 is connected with an input end KI, the capacitor C1 is connected with an input end KI-COM, the current and voltage dividing relay trigger circuit comprises a resistor R3 and a resistor R4 which are connected in series, and two end of the resistor R4 are connected in parallel with a diode D2 and a relay K1, and the relay K1 controls activating signals of an output end KO and an output end KO-COM.

Description

technical field [0001] The invention belongs to the technical field of electronics and electrics, and in particular relates to an anti-interference circuit for increasing input power by receiving switching value of a relay. Background technique [0002] In power plants, substations or other places where electromagnetic interference is strong and relatively important, some electrical equipment makes logical judgments based on the received switching signals, and then controls the output of electrical equipment. Some switching signals are particularly important, such as heavy gas signals, received by microcomputer protection equipment This signal will trip the circuit breaker, and another example is the fire signal of the oil-immersed transformer oil discharge and nitrogen injection fire extinguishing device, which directly affects the oil discharge and nitrogen injection action. If these signals are falsely reported due to electromagnetic interference, the consequences will be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H47/02
Inventor 牟广江丁权乔成银郭占杰吴中于
Owner BAODING BOWEI SHINENG ELECTRIC CO LTD