CN206442551U - A kind of LED thyristor regulatings photoelectric source active damping circuits - Google Patents
A kind of LED thyristor regulatings photoelectric source active damping circuits Download PDFInfo
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- CN206442551U CN206442551U CN201621445648.0U CN201621445648U CN206442551U CN 206442551 U CN206442551 U CN 206442551U CN 201621445648 U CN201621445648 U CN 201621445648U CN 206442551 U CN206442551 U CN 206442551U
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- resistance
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- damping
- diode
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Abstract
The utility model provides a kind of LED thyristor regulatings photoelectric source active damping circuits, including resistance R1, resistance R2, diode D1, resistance R4, damping resistance R5, EMC filter capacitors C1, controllable silicon dimmer ZD1 and metal-oxide-semiconductor Q1, one end connection power supply Vbuss of the resistance R1, the other end of the resistance R1 is connected with one end of the resistance R2, the other end of the resistance R2 is connected with the positive pole of the diode D1, the one end of the negative pole of the diode D1 respectively with the resistance R4, one end connection of the EMC filter capacitors C1, the negative pole of the other end of the resistance R4 respectively with the controllable silicon dimmer ZD1, the grid connection of the metal-oxide-semiconductor Q1.The beneficial effects of the utility model are：Can stabilized power source output, raising power supply whole efficiency.
Description
Technical field
The utility model is related to a kind of LED thyristor regulatings photoelectric source master in Switching Power Supply, more particularly to Switching Power Supply
Dynamic damping circuit.
Background technology
LED thyristor regulatings photoelectric source is in dimmer, because electric capacity can quickly fill in power supply prime EMC filter circuit
Electricity, produces a current spike, if without resistive damping, the current spike will cause mains input current to vibrate, high current
Light modulator false triggering will be caused, cause power supply output unstable.
The content of the invention
In order to solve the problems of the prior art, the utility model provides a kind of LED thyristor regulatings photoelectric source actively
Antihunt circuit.
The utility model provides a kind of LED thyristor regulatings photoelectric source active damping circuits, including resistance R1, resistance
R2, diode D1, resistance R4, damping resistance R5, EMC filter capacitor C1, controllable silicon dimmer ZD1 and metal-oxide-semiconductor Q1, the resistance
R1 one end connection power supply Vbuss, the other end of the resistance R1 is connected with one end of the resistance R2, and the resistance R2's is another
One end is connected with the positive pole of the diode D1, the negative pole of diode D1 one end respectively with the resistance R4, the EMC
Filter capacitor C1 one end connection, it is the other end of resistance R4 negative pole respectively with the controllable silicon dimmer ZD1, described
Metal-oxide-semiconductor Q1 grid connection, the grounded drain GND1, the damping resistance R5 of the metal-oxide-semiconductor Q1 one end ground connection GND1 is described
Positive pole, the other end of the EMC filter capacitors C1 of the damping resistance R5 other end respectively with the controllable silicon dimmer ZD1 connect
Connect, the source electrode of the metal-oxide-semiconductor Q1 is connected between the positive pole of the controllable silicon dimmer ZD1, damping resistance R5.
As further improvement of the utility model, the other end of the resistance R2 is connected with resistance R3, the resistance R3
It is grounded GND.
As further improvement of the utility model, the LED thyristor regulatings photoelectric source active damping circuits also include
Triode Q2, the triode Q2 base stage are connected between the resistance R2, resistance R3, and the colelctor electrode of the triode Q2 connects
It is connected between diode D1, EMC filter capacitor C1, the grounded emitter GND of the triode Q2.
The beneficial effects of the utility model are：, can stabilized power source output, raising power supply whole efficiency by such scheme.
Brief description of the drawings
Fig. 1 is a kind of circuit diagram of LED thyristor regulatings photoelectric source active damping circuits of the utility model.
Embodiment
The utility model is described in further detail for explanation and embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of LED thyristor regulatings photoelectric source active damping circuits, including resistance R1, resistance R2, two poles
Pipe D1, resistance R4, damping resistance R5, EMC filter capacitor C1, controllable silicon dimmer ZD1 and metal-oxide-semiconductor Q1, the one of the resistance R1
End connection power supply Vbuss, the other end of the resistance R1 is connected with one end of the resistance R2, the other end of the resistance R2 and
The positive pole connection of the diode D1, the negative pole of diode D1 one end respectively with the resistance R4, the EMC filtered electricals
Hold C1 one end connection, negative pole, the metal-oxide-semiconductor Q1 of the other end of the resistance R4 respectively with the controllable silicon dimmer ZD1
Grid connection, the grounded drain GND1, the damping resistance R5 of the metal-oxide-semiconductor Q1 one end ground connection GND1, damping electricity
Hinder positive pole, the other end of the EMC filter capacitors C1 of the R5 other end respectively with the controllable silicon dimmer ZD1 to be connected, institute
The source electrode for stating metal-oxide-semiconductor Q1 is connected between the positive pole of the controllable silicon dimmer ZD1, damping resistance R5.
As shown in figure 1, the other end of the resistance R2, which is connected with resistance R3, the resistance R3, is grounded GND.
As shown in figure 1, the LED thyristor regulatings photoelectric source also includes triode Q2, three pole with active damping circuits
Pipe Q2 base stage is connected between the resistance R2, resistance R3, the colelctor electrode of the triode Q2 be connected to the diode D1,
Between EMC filter capacitors C1, the grounded emitter GND of the triode Q2.
A kind of operation principle for LED thyristor regulatings photoelectric source active damping circuits that the utility model is provided is as follows：
Controllable silicon dimmer ZD1 is triggered, plant-grid connection alternate current operation electricity, and EMC filter capacitors C1 is initially low-voltage, and opens
Begin by resistance R1, resistance R2, diode D1 chargings, metal-oxide-semiconductor Q1 is not turned on, damping resistance R5 access power supply major loops suppress
The peak current of startup.
2. EMC filter capacitors C1 chargings reach that metal-oxide-semiconductor Q1 cut-in voltages Ugs (th), metal-oxide-semiconductor Q1 are begun to turn on.With
EMC filter capacitors C1 voltage rise, metal-oxide-semiconductor Q1 is fully on, and main circuit current mainly passes through from metal-oxide-semiconductor Q1.Damping resistance
The voltage at R5 two ends is adjusted to the Vds voltages after metal-oxide-semiconductor Q1 saturation conductions, because this voltage is very low, so only producing very low
Power consumption.
3. controllable silicon dimmer ZD1 ends, electric capacity C1 is discharged to rapidly 0V by triode Q2, and metal-oxide-semiconductor Q1 cut-offs are multiple
Position.It is ready for next power cycle.
Parameter setting
1. electric capacity C1 charging voltages Vt=E* [1-exp (- t/RC),
By the conducting delay time for adjusting resistance R1, resistance R2, EMC filter capacitor C1 Parameter adjustable section metal-oxide-semiconductor Q1.
2. damping resistance R5 power consumption：P=Vds^2/R5.
A kind of LED thyristor regulatings photoelectric source active damping circuits that the utility model is provided, damping resistance is only controllable
The starting stage of silicon dimmer seals in major loop, the effect for suppressing peak current is reached, when the EMC filter capacitors of major loop
After charging is finished, main circuit current mainly flows through from bypass MOS, and damping resistance both end voltage is adjusted to MOS saturations and led
Vds voltages after logical（This voltage is very low）, the seldom energy of at this moment damping resistance consumption.It has been obviously improved the entirety of power supply
Efficiency, it is effective to reduce damping resistance power consumption.Compared to conventional damper circuit, bigger damping resistance is can select, in controllable silicon
When depth is dimmed, power supply output is more stable.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to
Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art
For personnel, without departing from the concept of the premise utility, some simple deduction or replace can also be made, should all be regarded
To belong to protection domain of the present utility model.
Claims (3)
1. a kind of LED thyristor regulatings photoelectric source active damping circuits, it is characterised in that：Including resistance R1, resistance R2, diode
D1, resistance R4, damping resistance R5, EMC filter capacitor C1, controllable silicon dimmer ZD1 and metal-oxide-semiconductor Q1, one end of the resistance R1
Power supply Vbuss is connected, the other end of the resistance R1 is connected with one end of the resistance R2, the other end of the resistance R2 and institute
State diode D1 positive pole connection, the negative pole of diode D1 one end respectively with the resistance R4, the EMC filter capacitors
C1 one end connection, the other end of resistance R4 negative pole respectively with the controllable silicon dimmer ZD1, the metal-oxide-semiconductor Q1
Grid is connected, the grounded drain GND1, the damping resistance R5 of the metal-oxide-semiconductor Q1 one end ground connection GND1, the damping resistance
Positive pole, the other end of the EMC filter capacitors C1 of the R5 other end respectively with the controllable silicon dimmer ZD1 are connected, described
Metal-oxide-semiconductor Q1 source electrode is connected between the positive pole of the controllable silicon dimmer ZD1, damping resistance R5.
2. LED thyristor regulatings photoelectric source active damping circuits according to claim 1, it is characterised in that：The resistance
The R2 other end is connected with resistance R3, the resistance R3 and is grounded GND.
3. LED thyristor regulatings photoelectric source active damping circuits according to claim 2, it is characterised in that：The LED can
Control silicon dimming power source with active damping circuits also including triode Q2, the triode Q2 base stage be connected to the resistance R2,
Between resistance R3, the colelctor electrode of the triode Q2 is connected between diode D1, EMC filter capacitor C1, three pole
Pipe Q2 grounded emitter GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621445648.0U CN206442551U (en) | 2016-12-27 | 2016-12-27 | A kind of LED thyristor regulatings photoelectric source active damping circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621445648.0U CN206442551U (en) | 2016-12-27 | 2016-12-27 | A kind of LED thyristor regulatings photoelectric source active damping circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206442551U true CN206442551U (en) | 2017-08-25 |
Family
ID=59641979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621445648.0U Expired - Fee Related CN206442551U (en) | 2016-12-27 | 2016-12-27 | A kind of LED thyristor regulatings photoelectric source active damping circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206442551U (en) |
-
2016
- 2016-12-27 CN CN201621445648.0U patent/CN206442551U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170825 Termination date: 20191227 |
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| CF01 | Termination of patent right due to non-payment of annual fee |