CN211090068U - Hybrid dimming driving circuit - Google Patents
Hybrid dimming driving circuit Download PDFInfo
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- CN211090068U CN211090068U CN201921502916.1U CN201921502916U CN211090068U CN 211090068 U CN211090068 U CN 211090068U CN 201921502916 U CN201921502916 U CN 201921502916U CN 211090068 U CN211090068 U CN 211090068U
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Abstract
The utility model discloses a mix drive circuit that adjusts luminance, it includes the silicon controlled rectifier dimmer, by the first rectifier circuit that connects gradually, bleeder circuit, the silicon controlled rectifier constant current circuit that the constant current circuit is constituteed, by the second rectifier circuit that connects gradually, constant voltage power supply circuit, the wireless control circuit that wireless control module becomes, detection circuitry, constant current circuit adopts the simulation mode of adjusting luminance to adjust luminance L ED load, wireless control module carries out wireless remote dimming to L ED load through constant current circuit, detection circuitry detects the phase place or the output voltage change of silicon controlled rectifier dimmer, when detection circuitry output phase place change signal or voltage change signal give wireless control module, wireless control module passes through the luminance of constant current circuit control L ED load and resets to wireless control module and does not adjust luminance or the mixing of colors control state of not adjusting luminance, the advantage is that wireless communication equipment adjusts luminance to L ED lamp through wireless control module earlier, still can carry out whole luminance regional internal regulation to L ED lamp through the silicon controlled rectifier.
Description
Technical Field
The utility model relates to a drive circuit of L ED illumination product especially relates to a hybrid dimming drive circuit.
Background
In recent years, with the rapid development of wireless communication technology and internet technology, wireless communication technology and internet technology are gradually applied to L ED lighting products and wireless switching and dimming and color mixing are performed on L ED lighting products, L ED lamps can adopt either thyristor or wireless communication equipment for dimming due to the addition of the wireless communication technology, and when the wireless communication equipment is subjected to dimming through the wireless control module for L ED lamps and then dimming through the thyristor dimmers, the thyristor dimmers can only adjust the rest light but cannot adjust the whole brightness region.
Disclosure of Invention
The utility model aims to solve the technical problem that a hybrid dimming drive circuit is provided, it makes even wireless communication equipment adjusts luminance to L ED lamp through wireless control module earlier, still can carry out whole luminance regional interior regulation to L ED lamp through the silicon controlled rectifier dimmer.
The utility model provides a technical scheme that above-mentioned technical problem adopted is that a mixed dimming drive circuit, including silicon controlled rectifier dimmer, silicon controlled rectifier constant current circuit and wireless control circuit of adjusting luminance, silicon controlled rectifier constant current circuit of adjusting luminance by the first rectifier circuit that connects gradually, bleeder circuit, constant current circuit constitute, wireless control circuit constitute by the second rectifier circuit, constant voltage power supply circuit, the wireless control module that connect gradually, the commercial power pass through silicon controlled rectifier dimmer after all the way with first rectifier circuit's input connect, another way with second rectifier circuit's input connect, constant current circuit's output and L ED load connect, wireless control module's output with constant current circuit's the end of adjusting luminance connect in order to carry out wireless remote dimming to L ED load, its characterized in that, constant current circuit adopt the simulation dimming control mode to adjust luminance L load, this mixed dimming drive circuit still including be used for detecting silicon controlled rectifier's phase change or silicon controlled rectifier dimmer's output voltage change's detection circuitry, work as detection circuitry output phase change signal give wireless control module's luminance is through wireless control module of adjusting luminance or wireless control module when adjusting luminance to L the wireless control module of adjusting luminance.
The input end of the detection circuit is connected with the output end of the second rectification circuit, and the output end of the detection circuit is connected with the input end of the wireless control module.
The detection circuit is composed of a sixth resistor, a seventh resistor, a third capacitor and a voltage stabilizing diode, wherein one end of the sixth resistor is connected with one output end of the second rectifying circuit, the other end of the sixth resistor is respectively connected with one end of the seventh resistor, one end of the third capacitor, the cathode of the voltage stabilizing diode and the input end of the wireless control module, the other end of the seventh resistor is respectively connected with the other end of the third capacitor and the anode of the voltage stabilizing diode, and the common connecting end of the seventh resistor is connected with the other output end of the second rectifying circuit.
The input end of the detection circuit is connected with the input end of the second rectification circuit, and the output end of the detection circuit is connected with the input end of the wireless control module.
The detection circuit is composed of a sixth resistor, a seventh resistor, a third capacitor and a voltage stabilizing diode, wherein one end of the sixth resistor is connected with one input end of the second rectifying circuit, the other end of the sixth resistor is respectively connected with one end of the seventh resistor, one end of the third capacitor, the cathode of the voltage stabilizing diode and the input end of the wireless control module, the other end of the seventh resistor is respectively connected with the other end of the third capacitor and the anode of the voltage stabilizing diode, and the common connecting end of the seventh resistor is connected with the other input end of the second rectifying circuit.
A signal isolation conversion circuit is additionally arranged between the output end of the wireless control module and the dimming end of the constant current circuit, so that the wireless control module and the constant current circuit are grounded together before signal isolation, and the wireless control module and the constant current circuit are grounded together after signal isolation. Because the wireless control module and the constant current circuit are not in common, the wireless control module and the constant current circuit are in common by introducing the signal isolation conversion circuit before and after signal isolation.
The signal isolation conversion circuit is an optical coupling circuit.
The bleeder circuit comprises a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor and a control chip with the model of JW1695, wherein one end of the first resistor is connected with one output end of the first rectifying circuit, the other end of the first resistor is respectively connected with one end of the second resistor and one end of the first capacitor, a common connecting end of the first resistor is connected with a pin 3 of the control chip, the other end of the second resistor is connected with the other end of the first capacitor, a common connecting end of the second resistor is connected with the other output end of the first rectifying circuit, a pin 1 of the control chip is connected with one output end of the first rectifying circuit through the third resistor, a pin 2 of the control chip is connected with the other output end of the first rectifying circuit through the second capacitor, the 4 th pin of the control chip is connected with the constant current circuit, and the 5 th pin to the 8 th pin of the control chip are connected with the other output end of the first rectifying circuit. When the mains supply is rectified by the first rectifying circuit and then is input into the control chip through the first resistor, if the silicon controlled rectifier dimmer is used for dimming, the voltage change rate output into the control chip is large, so that the control chip is conducted to work, and the maintenance current is provided for the silicon controlled rectifier dimmer; if the silicon controlled dimmer does not adjust the light, the control chip is disconnected and does not work; the use of a bleeder (Bleed) circuit may improve power efficiency when the thyristor dimmer is not connected.
The constant current circuit comprises a constant current control chip with the model number of BP5788DJ, the wireless control module is of the model number of TYWE 3L, and the constant voltage power supply circuit comprises a constant voltage chip with the model number of BP 8519C.
The input end of the detection circuit is connected with the output end of the first rectifying circuit, and the output end of the detection circuit is connected with the input end of the wireless control module; or the input end of the detection circuit is connected with the input end of the first rectifying circuit, and the output end of the detection circuit is connected with the input end of the wireless control module.
Compared with the prior art, the utility model has the advantages of:
1) when the silicon controlled dimmer dims light, the detection circuit detects that the phase of the silicon controlled dimmer changes or the output voltage changes, the phase change signal or the voltage change signal is input into the wireless control module, the wireless control module resets the brightness of the L ED load to the non-dimming or non-dimming and color-mixing control state of the wireless control module, at the moment, the silicon controlled dimmer can perform dimming in the whole brightness region on the L ED load, namely, even if the wireless communication device performs dimming on the L ED load through the wireless control module, the silicon controlled dimmer can still perform adjustment in the whole brightness region on the L ED load.
2) The hybrid dimming driving circuit can directly use the silicon controlled dimmer to adjust the whole brightness region of L ED load, cannot influence the silicon controlled dimmer to adjust the whole brightness region of L ED load after the wireless communication device (such as APP) is used for adjusting the brightness of L ED load, and can only adjust the residual dimming brightness by using the wireless communication device after the silicon controlled dimmer is used for dimming L ED load.
3) The constant current circuit in the hybrid dimming driving circuit adopts an analog dimming control mode to dim L ED load instead of a PWM chopping dimming mode, because the lamp flicker phenomenon can occur in the dimming process by adopting the PWM chopping dimming mode.
4) Because the thyristor dimmer needs to provide a holding current during dimming, a bleeder circuit is used to provide a holding circuit for the thyristor dimmer.
5) The first rectifying circuit is arranged to enable the mains supply to supply power for the constant current circuit, the second rectifying circuit is arranged to enable the mains supply to supply power for the wireless control module, the wireless control module and the mains supply do not interfere with each other, and the wireless control module can still be supplied with power through the second rectifying circuit when the silicon controlled rectifier dimmer is adjusted to the low end.
Drawings
Fig. 1 is a block diagram of a hybrid dimming driving circuit according to a first embodiment;
fig. 2 is a specific circuit diagram of a hybrid dimming driving circuit according to a first embodiment;
fig. 3 is a block diagram of a hybrid dimming driving circuit according to a second embodiment;
fig. 4 is a specific circuit diagram of a hybrid dimming driving circuit according to a second embodiment.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
The first embodiment is as follows:
a hybrid dimming driving circuit proposed in this embodiment, as shown in fig. 1 and 2, includes a thyristor dimmer 1, a thyristor dimming constant current circuit 2, a wireless control circuit 3, and a detection circuit 4, the thyristor dimming constant current circuit 2 is composed of a first rectifier circuit BD1, a Bleed (Bleed) circuit 21, and a constant current circuit 22 that are connected in sequence, the wireless control circuit 3 is composed of a second rectifier circuit BD2, a constant voltage power supply circuit 31, and a wireless control module M1 that are connected in sequence, a commercial power is connected to an input terminal of the first rectifier circuit BD1 after passing through the thyristor dimmer 1, the other circuit is connected to an input terminal of the second rectifier circuit BD2, an output terminal of the first rectifier circuit BD1 is connected to an input terminal of the constant current circuit 21, an output terminal of the Bleed circuit 21 is connected to an input terminal of the constant current circuit 22, an output terminal of the constant current circuit 22 is connected to a load 9 of the wireless control module L, the wireless control circuit 22 dims L ED load 9 in an analog dimming control mode, an output terminal of the second rectifier circuit BD2 is connected to an input terminal of the constant current power supply circuit 31, an output terminal of the wireless control module BD 9 is connected to detect a dimming module BD 9, and an output terminal of the wireless control module BD dimmer circuit 3648, and an output terminal of the wireless control module BD lighting module BD2, and a wireless control module BD lighting module 3626, the wireless control module is connected to detect a wireless control module, the.
In this embodiment, a signal isolation conversion circuit 5 is additionally provided between the output terminal of the wireless control module M1 and the dimming terminal of the constant current circuit 22, so that the wireless control module M1 before signal isolation is grounded together with the constant current circuit 22, and the wireless control module M1 after signal isolation is grounded together with the constant current circuit 22. Since the wireless control module M1 and the constant current circuit 22 are not in common, the signal isolation conversion circuit 5 is introduced to make the two circuits in common before and after signal isolation; the signal isolation conversion circuit 5 adopts an optical coupling circuit.
In this embodiment, the detection circuit 4 is composed of a sixth resistor R6, a seventh resistor R7, a third capacitor C3 and a zener diode ZD1, one end of the sixth resistor R6 is connected to one output end of the second rectification circuit BD2, the other end of the sixth resistor R6 is connected to one end of the seventh resistor R7, one end of the third capacitor C3, the cathode of the zener diode ZD1 and the input end of the wireless control module M1, the other end of the seventh resistor R7 is connected to the other end of the third capacitor C3 and the anode of the zener diode ZD1, and the common connection end thereof is connected to the other output end of the second rectification circuit BD 2.
In this embodiment, the bleeder circuit 21 includes a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, and a control chip U1 of JW1695 type, one end of the first resistor R1 is connected to one output terminal of the first rectifier circuit BD1, the other end of the first resistor R1 is connected to one end of the second resistor R2 and one end of the first capacitor C1, respectively, and a common connection terminal thereof is connected to the 3 rd pin of the control chip U1, the other end of the second resistor R2 is connected to the other end of the first capacitor C1, and a common connection terminal thereof is connected to the other output terminal of the first rectifier circuit BD1, the 1 st pin of the control chip U1 is connected to one output terminal of the first rectifier circuit BD1 through the third resistor R3, the 2 nd pin of the control chip U1 is connected to the other output terminal of the first rectifier circuit BD1 through the second capacitor C2, and the constant current circuit 1 of the control chip U1 is connected to the third pin 1, the 5 th pin to the 8 th pin of the control chip U1 are connected with the other output end of the first rectification circuit BD 1. When the mains supply is rectified by the first rectifying circuit BD1 and then is input into the control chip U1 through the first resistor R1, if the silicon controlled dimmer 1 is used for dimming, the voltage change rate output into the control chip U1 is large, the control chip U1 is conducted to work, and the maintaining current is provided for the silicon controlled dimmer 1; if the silicon controlled dimmer 1 does not dim, the control chip U1 is disconnected and does not work; the use of the bleed circuit 21 may improve the power efficiency when the triac dimmer 1 is not connected.
In the embodiment, a first rectification circuit BD and a second rectification circuit BD are both conventional rectification stacks and are composed of four diodes, a constant current circuit 22 comprises a constant current control chip U with the model number of BP5778, a fourth resistor R, a fifth resistor R, a first diode D, a first electrolytic capacitor CE and a second electrolytic capacitor CE, the first pin 1 of the constant current control chip U is connected with one output end of a signal isolation conversion circuit 5, the first pin 2 of the constant current control chip U is grounded through a fourth resistor R, the first pin 3 of the constant current control chip U is connected with the other output end of the signal isolation conversion circuit 5, the first pin 4 of the constant current control chip U is grounded through a fifth resistor R, the first pin 5 of the constant current control chip U is connected with the negative electrode of a bead 0ED-2 in an ED load 9 and the negative electrode of a second electrolytic capacitor CE, the first pin 6 of the constant current control chip U is connected with the negative electrode of another 2-1 in another 1ED load 9 and the negative electrode bead of the first electrolytic capacitor D, the first resistor D-2, the first resistor D is connected with the anode bead 3-2 of the wireless switch chip, the first resistor D is connected with the anode bead 2 of the wireless switch chip, the wireless switch chip is connected with the wireless switch chip, the wireless switch.
Example two:
as shown in fig. 3 and 4, the structure of the hybrid dimming driving circuit according to this embodiment is substantially the same as that of the first embodiment, except that: the input end of the detection circuit 4 is connected with the input end of the second rectification circuit BD2, the output end of the detection circuit 4 is connected with the input end of the wireless control module M1, the detection circuit 4 is composed of a sixth resistor R6, a seventh resistor R7, a third capacitor C3 and a zener diode ZD1, one end of the sixth resistor R6 is connected with one input end of the second rectification circuit BD2, the other end of the sixth resistor R6 is respectively connected with one end of a seventh resistor R7, one end of the third capacitor C3, the cathode of the zener diode ZD1 and the input end of the wireless control module M1, the other end of the seventh resistor R7 is respectively connected with the other end of the third capacitor C3 and the anode of the zener diode ZD1, and the common connection end of the seventh resistor R7 is connected with the other input end of the second rectification circuit BD 2.
In the actual design, the setting position of the detection circuit 4 can also be changed, for example, the input end of the detection circuit 4 is connected with the output end of the first rectification circuit BD1, and the output end of the detection circuit 4 is connected with the input end of the wireless control module M1; or the input end of the detection circuit 4 is connected with the input end of the first rectifying circuit BD1, and the output end of the detection circuit 4 is connected with the input end of the wireless control module M1.
Claims (10)
1. A hybrid dimming driving circuit comprises a silicon controlled dimmer, a silicon controlled dimming constant current circuit and a wireless control circuit, wherein the silicon controlled dimming constant current circuit comprises a first rectifying circuit, a discharge circuit and a constant current circuit which are sequentially connected, the wireless control circuit comprises a second rectifying circuit, a constant voltage power supply circuit and a wireless control module which are sequentially connected, a mains supply passes through the silicon controlled dimmer, one path of the mains supply is connected with the input end of the first rectifying circuit, the other path of the mains supply is connected with the input end of the second rectifying circuit, the output end of the constant current circuit is connected with an L ED load, the output end of the wireless control module is connected with the dimming end of the constant current circuit to carry out wireless remote dimming on a L ED load, the hybrid dimming driving circuit is characterized in that the constant current circuit adopts an analog dimming control mode to dim a L ED load, the hybrid dimming driving circuit further comprises a detection circuit for detecting the phase change of the silicon controlled dimmer or the output voltage change of the silicon controlled dimmer, and when the detection circuit outputs a phase change signal or a voltage change signal to the wireless control module, the wireless control module resets the dimming state of the L LED load.
2. A hybrid dimming driving circuit according to claim 1, wherein: the input end of the detection circuit is connected with the output end of the second rectification circuit, and the output end of the detection circuit is connected with the input end of the wireless control module.
3. A hybrid dimming driving circuit according to claim 2, wherein: the detection circuit is composed of a sixth resistor, a seventh resistor, a third capacitor and a voltage stabilizing diode, wherein one end of the sixth resistor is connected with one output end of the second rectifying circuit, the other end of the sixth resistor is respectively connected with one end of the seventh resistor, one end of the third capacitor, the cathode of the voltage stabilizing diode and the input end of the wireless control module, the other end of the seventh resistor is respectively connected with the other end of the third capacitor and the anode of the voltage stabilizing diode, and the common connecting end of the seventh resistor is connected with the other output end of the second rectifying circuit.
4. A hybrid dimming driving circuit according to claim 1, wherein: the input end of the detection circuit is connected with the input end of the second rectification circuit, and the output end of the detection circuit is connected with the input end of the wireless control module.
5. The hybrid dimming driving circuit of claim 4, wherein: the detection circuit is composed of a sixth resistor, a seventh resistor, a third capacitor and a voltage stabilizing diode, wherein one end of the sixth resistor is connected with one input end of the second rectifying circuit, the other end of the sixth resistor is respectively connected with one end of the seventh resistor, one end of the third capacitor, the cathode of the voltage stabilizing diode and the input end of the wireless control module, the other end of the seventh resistor is respectively connected with the other end of the third capacitor and the anode of the voltage stabilizing diode, and the common connecting end of the seventh resistor is connected with the other input end of the second rectifying circuit.
6. A hybrid dimming driving circuit according to any one of claims 1 to 5, wherein: a signal isolation conversion circuit is additionally arranged between the output end of the wireless control module and the dimming end of the constant current circuit, so that the wireless control module and the constant current circuit are grounded together before signal isolation, and the wireless control module and the constant current circuit are grounded together after signal isolation.
7. A hybrid dimming driving circuit according to claim 6, wherein: the signal isolation conversion circuit is an optical coupling circuit.
8. A hybrid dimming driving circuit according to claim 6, wherein: the bleeder circuit comprises a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor and a control chip with the model of JW1695, wherein one end of the first resistor is connected with one output end of the first rectifying circuit, the other end of the first resistor is respectively connected with one end of the second resistor and one end of the first capacitor, a common connecting end of the first resistor is connected with a pin 3 of the control chip, the other end of the second resistor is connected with the other end of the first capacitor, a common connecting end of the second resistor is connected with the other output end of the first rectifying circuit, a pin 1 of the control chip is connected with one output end of the first rectifying circuit through the third resistor, a pin 2 of the control chip is connected with the other output end of the first rectifying circuit through the second capacitor, the 4 th pin of the control chip is connected with the constant current circuit, and the 5 th pin to the 8 th pin of the control chip are connected with the other output end of the first rectifying circuit.
9. The hybrid dimming driving circuit of claim 1, wherein the constant current circuit comprises a constant current control chip of type BP5788DJ, the wireless control module is of type TYWE 3L, and the constant voltage power supply circuit comprises a constant voltage chip of type BP 8519C.
10. A hybrid dimming driving circuit according to claim 1, wherein: the input end of the detection circuit is connected with the output end of the first rectifying circuit, and the output end of the detection circuit is connected with the input end of the wireless control module; or the input end of the detection circuit is connected with the input end of the first rectifying circuit, and the output end of the detection circuit is connected with the input end of the wireless control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921502916.1U CN211090068U (en) | 2019-09-10 | 2019-09-10 | Hybrid dimming driving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921502916.1U CN211090068U (en) | 2019-09-10 | 2019-09-10 | Hybrid dimming driving circuit |
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| Publication Number | Publication Date |
|---|---|
| CN211090068U true CN211090068U (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921502916.1U Active CN211090068U (en) | 2019-09-10 | 2019-09-10 | Hybrid dimming driving circuit |
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| Country | Link |
|---|---|
| CN (1) | CN211090068U (en) |
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2019
- 2019-09-10 CN CN201921502916.1U patent/CN211090068U/en active Active
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