CN212875684U - High-frequency interference preventing self-recovery overvoltage and undervoltage protector circuit - Google Patents
High-frequency interference preventing self-recovery overvoltage and undervoltage protector circuit Download PDFInfo
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- CN212875684U CN212875684U CN202021730847.2U CN202021730847U CN212875684U CN 212875684 U CN212875684 U CN 212875684U CN 202021730847 U CN202021730847 U CN 202021730847U CN 212875684 U CN212875684 U CN 212875684U
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Abstract
The utility model discloses a prevent undervoltage protection ware circuit is crossed to high frequency interference's self-recovery formula. The power supply processing part comprises a high-frequency protection module, a voltage reduction module, a full-wave rectification module, a filtering module, a high-frequency absorption module and a secondary voltage reduction module, wherein the high-frequency protection module is connected between the input end and the voltage reduction module, the voltage reduction module is connected with the full-wave rectification module, the full-wave rectification module is connected with the filtering module, and the high-frequency absorption module is connected between the filtering module and the secondary voltage reduction module. The high-frequency protection module and the high-frequency absorption module are added to the power supply processing part, the power supply processing part and the external end are redesigned and arranged, the high-frequency protection module is directly connected to the input end, high-frequency interference can be effectively blocked, voltage reduction is carried out after voltage loss, the high-frequency interference is absorbed through the high-frequency absorption module after rectification and filtering, and after secondary voltage reduction and voltage stabilization are carried out on the power supply, the power supply is supplied to the analog-digital conversion and data processing part for use.
Description
Technical Field
The utility model belongs to the technical field of the protector circuit technique and specifically relates to an under-voltage protector circuit is crossed to self-recovery formula of preventing high frequency interference.
Background
The self-recovery type over-voltage and under-voltage protector is used for protecting single-phase electric equipment, namely, the zero line and the live line are over-high or over-low in voltage to damage the electric equipment, the power supply is cut off in time, and the power supply is switched on again after the voltage is recovered to be within a normal range and is delayed. When the self-recovery overvoltage and undervoltage protector in the prior art is used in a workplace, the protector is easily influenced by interference of high frequency, and the protection effect of the protector is influenced.
Disclosure of Invention
The utility model aims at: in order to overcome the defects of the prior art, the utility model provides a prevent undervoltage protection ware circuit is crossed to high frequency interference's self-recovery formula.
The technical scheme of the utility model: the power supply processing part comprises a high-frequency protection module, a voltage reduction module, a full-wave rectification module, a filtering module, a high-frequency absorption module and a secondary voltage reduction module, wherein the high-frequency protection module is connected between the input end and the voltage reduction module, the voltage reduction module is connected with the full-wave rectification module, the full-wave rectification module is connected with the filtering module, and the high-frequency absorption module is connected between the filtering module and the secondary voltage reduction module; the analog-to-digital conversion and data processing part is respectively connected with the secondary voltage reduction module, the signal processing part and the relay execution part.
By adopting the technical scheme, the high-frequency protection module and the high-frequency absorption module are added in the power supply processing part, the power supply processing part and the external end are redesigned and arranged, the high-frequency protection module is directly connected to the input end, high-frequency interference can be effectively blocked, voltage reduction is carried out after voltage loss, the high-frequency interference is absorbed by the high-frequency absorption module after rectification and filtration, and after secondary voltage reduction and voltage stabilization are carried out on the power supply, the power supply is supplied to the analog-digital conversion and data processing part for use.
The utility model discloses a further setting: the high-frequency protection module comprises a piezoresistor YG1 and a winding resistor R20, two ends of the piezoresistor YG1 are respectively connected to a live wire and a zero wire of the input end, one end of the winding resistor R20 is connected to a common end of the piezoresistor YG1 and the live wire of the input end, and the other end of the winding resistor R20 is connected to the voltage reduction module.
With the above further arrangement, the voltage dependent resistor YG1 can absorb surge and pulse interference, and is used for absorbing high-frequency signals and protecting ultra-high voltage, and the winding resistor R20 has the effect of blocking high-frequency interference.
The utility model discloses a further setting again: the high-frequency absorption module comprises a transient diode D7, and two ends of the transient diode D7 are connected to the filtering module.
By adopting the above further arrangement, the transient diode D7 can absorb the high-frequency signal that the front end is not absorbed and leaks, and effectively absorb the high-frequency interference.
The utility model discloses a still further set up: the voltage reduction module comprises a safety capacitor C1, a resistor R18 and a resistor R19, one end of the safety capacitor C1 is connected with a winding resistor R20, the other end of the safety capacitor C1 is connected with the full-wave rectification module, the resistor R18 is connected with a resistor R19, the outer end of the resistor R18 is connected with the common end of the safety capacitor C1 and the winding resistor R20, and the outer end of the resistor R19 is connected with the common end of the safety capacitor C1 and the full-wave rectification module.
With the above still further arrangement, the safety capacitor C1 is used for reducing voltage, and the resistor R18 and the resistor R19 are used for discharging the voltage reduction capacitor after voltage loss.
Drawings
FIG. 1 is a schematic circuit diagram of an embodiment of the present invention;
the device comprises an input end 1, a power supply processing part 2, a signal processing part 3, a relay execution part 4, an analog-to-digital conversion and data processing part 5, a high-frequency protection module 21, a voltage reduction module 22, a full-wave rectification module 23, a filtering module 24, a high-frequency absorption module 25 and a secondary voltage reduction module 26.
Detailed Description
As shown in fig. 1, the self-recovery overvoltage and undervoltage protector circuit for preventing high-frequency interference includes an input terminal 1, a power processing portion 2, a signal processing portion 3, a relay executing portion 4 and an analog-to-digital conversion and data processing portion 5, where the power processing portion 2 includes a high-frequency protection module 21, a voltage-dropping module 22, a full-wave rectification module 23, a filtering module 24, a high-frequency absorption module 25 and a secondary voltage-dropping module 26, the high-frequency protection module 21 is connected between the input terminal 1 and the voltage-dropping module 22, the voltage-dropping module 22 is connected with the full-wave rectification module 23, the full-wave rectification module 23 is connected with the filtering module 24, and the high-frequency absorption module 25 is connected between the filtering module 24; the analog-digital conversion and data processing part 5 is respectively connected with the secondary voltage reduction module 26, the signal processing part 3 and the relay execution part 4. The input end 1 is directly connected with the high-frequency protection module 21, so that high-frequency interference can be effectively blocked, voltage reduction is carried out through the voltage reduction module 22 after voltage loss, the high-frequency interference is absorbed through the high-frequency absorption module 25 after rectification and filtering are carried out by the full-wave rectification module 23 and the filtering module 24, and after secondary voltage reduction and voltage stabilization are carried out on a power supply, the power supply is supplied to the analog-digital conversion and data processing part 5 for use.
The high-frequency protection module 21 comprises a piezoresistor YG1 and a winding resistor R20, two ends of the piezoresistor YG1 are respectively connected to the live wire and the zero wire of the input end, one end of the winding resistor R20 is connected to the common end of the piezoresistor YG1 and the live wire of the input end, and the other end is connected to the voltage reduction module. The voltage dependent resistor YG1 can absorb surge and pulse interference, and is used for absorbing high frequency signals and protecting ultra-high voltage, and the winding resistor R20 has the effect of blocking high frequency interference.
The voltage reduction module 22 comprises a safety capacitor C1, a resistor R18 and a resistor R19, one end of the safety capacitor C1 is connected with a winding resistor R20, the other end of the safety capacitor C1 is connected with the full-wave rectification module, the resistor R18 is connected with the resistor R19, the outer end of the resistor R18 is connected with the common end of the safety capacitor C1 and the winding resistor R20, and the outer end of the resistor R19 is connected with the common end of the safety capacitor C1 and the full-wave rectification module. The safety capacitor C1 is used for reducing voltage, and the resistor R18 and the resistor R19 are used for discharging the voltage reduction capacitor after voltage loss.
The full-wave rectification module 23 is composed of a diode D3, a diode D4, a diode D5, and a diode D6, converts alternating current into direct current, and supplies the direct current after being filtered by an electrolytic capacitor E1 of the filtering module 24.
The high-frequency absorption module 25 comprises a transient diode D7, and both ends of the transient diode D7 are connected to the filtering module 24. The transient diode D7 can absorb the high-frequency signal that the front end is not absorbed but leaked, effectively absorbs the high-frequency interference.
The secondary voltage reduction module 26 consists of a diode D8, a resistor R5, a resistor R6, a resistor R7, an electrolytic capacitor E2, a chip U2, a capacitor C3, a resistor R9 and a resistor R10, can perform voltage division and secondary filtering, plays a role in voltage reduction and voltage stabilization, stabilizes the power supply voltage at positive 5V, and provides a stable power supply for the circuit.
Claims (4)
1. The utility model provides a prevent under-voltage protector circuit is crossed to high frequency interference's self-recovery formula, includes input, power processing part, signal processing part, relay execution part and analog-to-digital conversion and data processing part, its characterized in that: the power supply processing part comprises a high-frequency protection module, a voltage reduction module, a full-wave rectification module, a filtering module, a high-frequency absorption module and a secondary voltage reduction module, wherein the high-frequency protection module is connected between the input end and the voltage reduction module, the voltage reduction module is connected with the full-wave rectification module, the full-wave rectification module is connected with the filtering module, and the high-frequency absorption module is connected between the filtering module and the secondary voltage reduction module; the analog-to-digital conversion and data processing part is respectively connected with the secondary voltage reduction module, the signal processing part and the relay execution part.
2. The self-recovery overvoltage-undervoltage protector circuit for preventing high-frequency interference according to claim 1, wherein: the high-frequency protection module comprises a piezoresistor YG1 and a winding resistor R20, two ends of the piezoresistor YG1 are respectively connected to a live wire and a zero wire of the input end, one end of the winding resistor R20 is connected to a common end of the piezoresistor YG1 and the live wire of the input end, and the other end of the winding resistor R20 is connected to the voltage reduction module.
3. The self-recovery overvoltage and undervoltage protector circuit for preventing high-frequency interference according to claim 1 or 2, wherein: the high-frequency absorption module comprises a transient diode D7, and two ends of the transient diode D7 are connected to the filtering module.
4. The self-recovery overvoltage and undervoltage protector circuit for preventing high-frequency interference according to claim 1 or 2, wherein: the voltage reduction module comprises a safety-regulation capacitor C1, a resistor R18 and a resistor R19, one end of the safety-regulation capacitor C1 is connected with a winding resistor R20, the other end of the safety-regulation capacitor C1 is connected with the full-wave rectification module, the resistor R18 is connected with a resistor R19, the outer end of the resistor R18 is connected with the common end of the safety-regulation capacitor C1 and the winding resistor R20, and the outer end of the resistor R19 is connected with the common end of the safety-regulation capacitor C1 and the full-wave rectification module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021730847.2U CN212875684U (en) | 2020-08-18 | 2020-08-18 | High-frequency interference preventing self-recovery overvoltage and undervoltage protector circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021730847.2U CN212875684U (en) | 2020-08-18 | 2020-08-18 | High-frequency interference preventing self-recovery overvoltage and undervoltage protector circuit |
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| Publication Number | Publication Date |
|---|---|
| CN212875684U true CN212875684U (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021730847.2U Active CN212875684U (en) | 2020-08-18 | 2020-08-18 | High-frequency interference preventing self-recovery overvoltage and undervoltage protector circuit |
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|---|---|
| CN (1) | CN212875684U (en) |
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- 2020-08-18 CN CN202021730847.2U patent/CN212875684U/en active Active
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