CN109061278A - A kind of zero cross detection circuit of super low-power consumption - Google Patents
A kind of zero cross detection circuit of super low-power consumption Download PDFInfo
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- CN109061278A CN109061278A CN201810628563.3A CN201810628563A CN109061278A CN 109061278 A CN109061278 A CN 109061278A CN 201810628563 A CN201810628563 A CN 201810628563A CN 109061278 A CN109061278 A CN 109061278A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/175—Indicating the instants of passage of current or voltage through a given value, e.g. passage through zero
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Abstract
The present invention provides a kind of zero cross detection circuits of super low-power consumption, it is characterized in that, it includes rectification module, auxiliary power module, control module, drive module, control switch module and zero crossing detection module, rectification module is connect with auxiliary power module and control switch module, auxiliary power module is connect with control module and drive module, control module is connect with drive module, and the drive module is connect with control switch module, and control switch module is connect with zero crossing detection module；Accessory power supply is increased in traditional zero cross detection circuit, control circuit, driving circuit, control switch module section, provide a kind of zero cross detection circuit of super-low standby power consumption, it solves the problems, such as that current zero cross detection circuit stand-by power consumption is excessively high, achievees the purpose that reduce the products stand-by power consumptions such as single-fire-wire electronic switch, light modulator.
Description
Technical field
The present invention relates to alternating current circuit field more particularly to a kind of zero cross detection circuits of super low-power consumption.
Background technique
In the product designs such as the electronic switch of single firewire and light modulator, need to open using the zero crossing of alternating current for zero passage
It closes, the multiple functions such as clocked flip, zero crossing generallys use resistance and divides the mode of line voltage directly to obtain.Line voltage
Usually 100V-240VAC or so will consume biggish power, usually 20mW- under this condition of high voltage on resistance
130mW or so, this power consumption are still remained in standby mode.With the extensive use of low-power LED, single firewire product it is standby
Power consumption requirements are higher and higher, are commonly designed requirement at least below 10mW, just can guarantee that most LED are not in the feelings of flashing
Condition, therefore the stand-by power consumption of zero crossing circuitry need to be reduced to reach this requirement.
Summary of the invention
The object of the present invention is to provide a kind of zero cross detection circuits of super low-power consumption, and it is standby to solve current zero cross detection circuit
The excessively high problem of power consumption.
To achieve the goals above, the technical scheme is that
A kind of zero cross detection circuit of super low-power consumption, which is characterized in that it includes rectification module, auxiliary power module, control mould
Block, drive module, control switch module and zero crossing detection module, the output end of the rectification module respectively with auxiliary power module
Input terminal and control switch module an input terminal connection, the output end of the auxiliary power module respectively with control module
Input terminal and drive module input terminal connection, the output end of the control module and another input terminal of drive module
Connection, the output end of the drive module connect with another input terminal of control switch module, the control switch module it is defeated
The connection of the input terminal of outlet and zero crossing detection module；
Wherein, the control module includes diode, first resistor, second resistance and the first triode, and the diode is just
Pole connects exchange input, and the cathode of the diode connects one end of first resistor, and the other end of the first resistor connects second respectively
The base stage of one end of resistance and the first triode, the base stage of first triode and the other end of second resistance connect jointly
Ground；
The drive module includes 3rd resistor, the 4th resistance, the 5th resistance, the 6th resistance, the 7th resistance, the 8th resistance,
The collector of nine resistance, the second triode and third transistor, first triode connects 3rd resistor and the 4th resistance respectively
One end, the base stage of another termination third transistor of the 3rd resistor, the other end of the 4th resistance connects the 5th respectively
The base stage of one end of resistance and the second triode, the emitter of the second triode of another termination of the 5th resistance, described
The emitter of the other end of five resistance and the second triode connects supply voltage, and the collector of second triode connects the 6th resistance
One end, the other end of the 6th resistance connects the 7th resistance and the 8th resistance one end, the other end of the 7th resistance respectively
Connect the collector of third transistor, the emitter ground connection of the third transistor, the 9th electricity of another termination of the 8th resistance
One end of resistance, the other end ground connection of the 9th resistance；
The control switch module includes the tenth resistance, eleventh resistor and metal-oxide-semiconductor, another termination MOS of the 8th resistance
The grid of pipe, a termination positive voltage of the tenth resistance, one end of another termination eleventh resistor of the tenth resistance, institute
State the drain electrode of another termination metal-oxide-semiconductor of eleventh resistor；
The zero crossing detection module includes twelfth resistor, thirteenth resistor, the 14th resistance and the 4th triode, the MOS
The source electrode of pipe connects one end of twelfth resistor, and the other end of the twelfth resistor connects one end and of thirteenth resistor respectively
The ground level of four triodes, a termination supply voltage of the 14th resistance, another termination the four or three of the 14th resistance
The collector of pole pipe, the other end of the thirteenth resistor and the emitter of the 4th triode are grounded jointly, the 14th electricity
The collector of the other end of resistance and the 4th triode makees output end.
The present invention has the advantages that accessory power supply is increased in traditional zero cross detection circuit, and control circuit, driving electricity
Road, control switch module section, driving circuit use common emitter complementary push-pull circuit, constant current amplification, provide it is a kind of it is ultralow to
The zero cross detection circuit of machine power consumption solves the problems, such as that current zero cross detection circuit stand-by power consumption is excessively high, reaches drop by this scheme
The purpose of the products stand-by power consumption such as low single-fire-wire electronic switch, light modulator.
Detailed description of the invention
Fig. 1 is general frame schematic diagram of the invention；
Fig. 2 is electrical block diagram of the invention.
Appended drawing reference:
1 rectification module
2 auxiliary power modules
3 control modules
4 drive modules
5 control switch modules
6 zero crossing detection modules
R1 ~ 14 first ~ 14 resistance
The first ~ tetra- triode of Q1 ~ 4
Q5 metal-oxide-semiconductor.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
The invention discloses a kind of zero cross detection circuits of super low-power consumption, which is characterized in that as shown in Figure 1, it includes whole
Flow module 1, auxiliary power module 2, control module 3, drive module 4, control switch module 5 and zero crossing detection module 6, it is described whole
The output end of flow module 1 is connect with an input terminal of the input terminal of auxiliary power module 2 and control switch module 5 respectively, institute
The output end for stating auxiliary power module 2 is connect with an input terminal of the input terminal of control module 3 and drive module 4 respectively, institute
The output end for stating control module 3 is connect with another input terminal of drive module 4, and the output end of the drive module 4 is opened with control
Another input terminal connection of module 5 is closed, the output end of the control switch module 5 is connect with the input terminal of zero crossing detection module 6.
As shown in Fig. 2, the control module 3 includes diode D, first resistor R1, second resistance R2 and the first triode
Q1, the anode of the diode D connect exchange input CON, using exchange input CON on level control diode D opening with
It closes, the cathode of the diode D connects one end of first resistor R1, and the other end of the first resistor R1 connects second resistance respectively
The base stage of one end of R2 and the first triode Q1, the base stage of the first triode Q1 and the other end of second resistance R2 are common
Ground connection.
As shown in Fig. 2, the drive module 4 includes 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance
R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the second triode Q2 and third transistor Q3, first triode
The collector of Q1 connects one end of 3rd resistor R3 and the 4th resistance R4, the three or three pole of another termination of the 3rd resistor R3 respectively
The other end of the base stage of pipe Q3, the 4th resistance R4 connects one end of the 5th resistance R5 and the base stage of the second triode Q2 respectively,
The emitter of the second triode of another termination Q2 of the 5th resistance R5, the other end of the 5th resistance R5 and the two or three pole
The emitter of pipe Q2 meets supply voltage VCC2, and the collector of the second triode Q2 connects one end of the 6th resistance R6, and described
The other end of six resistance R6 connects the 7th resistance R7 and the 8th one end resistance R8, another termination third of the 7th resistance R7 respectively
The collector of triode Q3, the emitter ground connection of the third transistor Q3, the 9th electricity of another termination of the 8th resistance R8
Hinder one end of R9, the other end ground connection of the 9th resistance R9.
Second triode Q2 and third transistor Q3 forms common emitter complementary push-pull circuit, has voltage amplification ability, collection
The output impedance of electrode is bigger, and collector is not control electrode, if load is changed or the voltage of output end has
Changed, have substantially no effect on original output electric current, there is constant current output characteristic, can be worked with stabilized driving metal-oxide-semiconductor.
As shown in Fig. 2, the control switch module 5 includes the tenth resistance R10, eleventh resistor R11 and metal-oxide-semiconductor Q5, institute
State the grid of another termination metal-oxide-semiconductor Q5 of the 8th resistance R8, a termination positive voltage V+ of the tenth resistance R10, the described tenth
One end of another termination eleventh resistor R11 of resistance R10, the leakage of another termination metal-oxide-semiconductor Q5 of the eleventh resistor R11
Pole, when it is implemented, utilizing the state of low and high level conversion and control metal-oxide-semiconductor Q5.
As shown in Fig. 2, the zero crossing detection module 6 includes twelfth resistor R12, thirteenth resistor R13, the 14th resistance
The source electrode of R14 and the 4th triode Q4, the metal-oxide-semiconductor Q5 connect one end of twelfth resistor R12, the twelfth resistor R12's
The other end connects one end of thirteenth resistor R13 and the ground level of the 4th triode Q4 respectively.
Metal-oxide-semiconductor Q5 is closed in standby mode, to reduce the electric current by the tenth resistance R10 and eleventh resistor R11；Work
When open metal-oxide-semiconductor Q5, the tenth resistance R10, eleventh resistor R11, twelfth resistor R12 and thirteenth resistor R13 form access,
For zero passage detection.
A termination supply voltage VCC1 of the 14th resistance R14, another termination the 4th of the 14th resistance R14
The emitter of the collector of triode Q4, the other end and the 4th triode Q4 of the thirteenth resistor R13 is grounded jointly, described
The other end of 14th resistance R14 and the collector of the 4th triode Q4 make output end, the four or three when pulsating volage is lower than 0.6V
Pole pipe Q4 cut-off, zero passage detection signal export high level, are usually low level.
Through the above scheme, the stand-by power consumption of zero cross detection circuit can be reduced by 95% or more, reaches the single firewire electricity of reduction
Sub switch, the purpose of the products stand-by power consumption such as light modulator.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (1)
1. a kind of zero cross detection circuit of super low-power consumption, which is characterized in that it includes rectification module (1), auxiliary power module
(2), control module (3), drive module (4), control switch module (5) and zero crossing detection module (6), the rectification module (1)
Output end connect respectively with an input terminal of the input terminal of auxiliary power module (2) and control switch module (5), it is described auxiliary
The output end of power module (2) is helped to connect respectively with an input terminal of the input terminal of control module (3) and drive module (4),
The output end of the control module (3) is connect with another input terminal of drive module (4), the output end of the drive module (4)
It is connect with another input terminal of control switch module (5), the output end and zero crossing detection module of the control switch module (5)
(6) input terminal connection；
Wherein, the control module (3) includes diode D, first resistor R1, second resistance R2 and the first triode Q1, described
The anode of diode D meets exchange input CON, and the cathode of the diode D meets one end of first resistor R1, the first resistor R1
The other end connect one end of second resistance R2 and the base stage of the first triode Q1 respectively, the base stage of the first triode Q1 with
The other end of second resistance R2 is grounded jointly；
The drive module (4) includes 3rd resistor R3, the 4th resistance R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance
R7, the 8th resistance R8, the 9th resistance R9, the second triode Q2 and third transistor Q3, the collector of the first triode Q1
One end of 3rd resistor R3 and the 4th resistance R4, the base of another termination third transistor Q3 of the 3rd resistor R3 are connect respectively
Pole, the other end of the 4th resistance R4 connect one end of the 5th resistance R5 and the base stage of the second triode Q2 respectively, and the described 5th
The emitter of the second triode of another termination Q2 of resistance R5, the other end of the 5th resistance R5 and the hair of the second triode Q2
Emitter-base bandgap grading meets supply voltage VCC2, and the collector of the second triode Q2 meets one end of the 6th resistance R6, the 6th resistance R6
The other end meet the 7th resistance R7 and the 8th one end resistance R8, another termination third transistor Q3 of the 7th resistance R7 respectively
Collector, the third transistor Q3 emitter ground connection, the one of the 9th resistance R9 of another termination of the 8th resistance R8
End, the other end ground connection of the 9th resistance R9；
The control switch module (5) includes the tenth resistance R10, eleventh resistor R11 and metal-oxide-semiconductor Q5, the 8th resistance R8
Another termination metal-oxide-semiconductor Q5 grid, the tenth resistance R10 one termination positive voltage V+, the tenth resistance R10's is another
Terminate one end of eleventh resistor R11, the drain electrode of another termination metal-oxide-semiconductor Q5 of the eleventh resistor R11；
The zero crossing detection module (6) includes twelfth resistor R12, thirteenth resistor R13, the 14th resistance R14 and the four or three
The source electrode of pole pipe Q4, the metal-oxide-semiconductor Q5 connect one end of twelfth resistor R12, and the other end of the twelfth resistor R12 connects respectively
The ground level of one end of thirteenth resistor R13 and the 4th triode Q4, a termination supply voltage of the 14th resistance R14
VCC1, the collector of the 4th triode Q4 of another termination of the 14th resistance R14, the thirteenth resistor R13's is another
It holds and is grounded jointly with the emitter of the 4th triode Q4, the other end of the 14th resistance R14 and the collection of the 4th triode Q4
Electrode makees output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628563.3A CN109061278B (en) | 2018-06-19 | 2018-06-19 | Zero-crossing detection circuit with ultralow power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810628563.3A CN109061278B (en) | 2018-06-19 | 2018-06-19 | Zero-crossing detection circuit with ultralow power consumption |
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| CN109061278A true CN109061278A (en) | 2018-12-21 |
| CN109061278B CN109061278B (en) | 2020-11-13 |
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Denomination of invention: A Ultra Low Power Zero Crossing Detection Circuit Granted publication date: 20201113 Pledgee: Agricultural Bank of China Limited Shanghai Songjiang Sub-branch Pledgor: FEIDIAO ELECTRICAL APPLIANCES GROUP Co.,Ltd. Registration number: Y2024980005668 |