CN219068421U - 0-10V dimming constant current source circuit allowing mains supply to be connected - Google Patents
0-10V dimming constant current source circuit allowing mains supply to be connected Download PDFInfo
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- CN219068421U CN219068421U CN202222985534.7U CN202222985534U CN219068421U CN 219068421 U CN219068421 U CN 219068421U CN 202222985534 U CN202222985534 U CN 202222985534U CN 219068421 U CN219068421 U CN 219068421U
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- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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Abstract
The utility model provides a 0-10V dimming constant current source circuit allowing mains supply to be connected, which comprises a power supply VCC+ and a power supply VCC-, wherein the power supply VCC+ is connected with one end of a resistor R1 and the cathode of a voltage stabilizing diode ZD1, the other end of the resistor R1 is connected with the emitter of a triode Q1 and the cathode of a diode D1, the anode of the voltage stabilizing diode ZD1 and the anode of the diode D1 are connected with the base of the triode Q1 and one end of a resistor R2, the other end of the resistor R2 is connected with the anode of the diode D2, the collector of the triode Q1 is connected with the anode of a diode D3, the cathode of the diode D3 is connected with the anode of a diode D4, one end of a resistor R5, the cathode of the diode D5 and a dimming signal Vdim, the cathode of the diode D4 is connected with a dimming port DIM+, and the power supply VCC-is connected with the cathode of the diode D2, the anode of the diode D5 and the other end of the resistor R5 and the dimming port DIM-. The utility model solves the problem that the whole circuit is damaged due to the fact that the dimming port DIM is connected with high-voltage power supply in the prior art.
Description
Technical Field
The utility model relates to the technical field of electronic circuit LED drivers, in particular to a 0-10V dimming constant current source circuit allowing mains supply to be connected.
Background
Since most of the current 0-10V dimmers require the power driver to provide constant current source power to operate normally, while the 0-10V dimming circuits are all low-voltage circuits, if the dimming line is inadvertently contacted to the mains or high voltage during the lamp assembly or commissioning process, the 0-10V dimming circuits will be damaged, and thus the whole power driver will be damaged.
Disclosure of Invention
The utility model provides a 0-10V dimming constant current source circuit allowing mains supply to be connected, which solves the problem that the whole circuit is damaged due to the fact that a dimming port DIM is connected with high-voltage power in the prior art.
In order to solve the technical problems, the utility model provides a 0-10V dimming constant current source circuit allowing mains supply to be connected, which comprises a power supply VCC+, a power supply VCC-, a dimming port DIM and a dimming port DIM-, wherein the power supply VCC+ is connected with one end of a resistor R1 and the cathode of a voltage stabilizing diode ZD1, the other end of the resistor R1 is connected with the emitter of a triode Q1 and the cathode of a diode D1, the anode of the voltage stabilizing diode ZD1 and the anode of the diode D1 are connected with the base of the triode Q1 and one end of a resistor R2, the other end of the resistor R2 is connected with the anode of the diode D2, the collector of the triode Q1 is connected with the anode of a diode D3, the cathode of the diode D3 is connected with the anode of a diode D4 and one end of a resistor R5, the cathode of the diode D5 and the dimming signal Vdim, the cathode of the diode D4 is connected with the dimming port DIM+, and the power supply VCC is connected with the cathode of the diode D2, the anode of the diode D5 and the other end of the resistor R5 and the dimming signal Vdim.
A resistor R3 and a resistor R4 are connected in series between the cathode of the diode D3 and the resistor R5, and the dimming signal Vdim is connected between the resistor R4 and the resistor R5.
And a dimming control unit is connected between the resistor R4 and the resistor R5.
And the cathode of the diode D2 is grounded.
The utility model has the beneficial effects that: the 0-10V dimming constant current source circuit allowing the mains supply to be connected can not only meet the constant current source power supply of the 0-10V dimmer, but also allow high-voltage power sources such as the mains supply to be connected in error without damaging the circuit, and has extremely low cost, and can be produced in a large scale and improve the reliability of the whole circuit.
Drawings
Fig. 1 is a schematic diagram of a 0 to 10V dimming constant current source circuit of the present utility model allowing mains access.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and the embodiments, in order to make the objects, technical solutions and advantages of the present utility model more apparent.
As shown in fig. 1, the 0-10V dimming constant current source circuit allowing mains supply to be connected comprises a power supply vcc+, a power supply VCC-, a dimming port dim+ and a dimming port DIM-, wherein the power supply vcc+ is connected with one end of a resistor R1 and the cathode of a voltage stabilizing diode ZD1, the other end of the resistor R1 is connected with the emitter of a triode Q1 and the cathode of a diode D1, the anode of the voltage stabilizing diode ZD1 is connected with the base of the triode Q1 and one end of a resistor R2, the other end of the resistor R2 is connected with the anode of a diode D2, the collector of the triode Q1 is connected with the anode of a diode D3, the cathode of the diode D3 is connected with the anode of a diode D4, one end of a resistor R5, the cathode of a diode D5 and the dimming signal Vdim, the cathode of the diode D4 is connected with the dimming port dim+, and the power supply VCC-is connected with the cathode of the diode D2, the anode of the diode D5 and the other end of the resistor R5 and the dimming port DIM-.
A resistor R3 and a resistor R4 are connected in series between the cathode of the diode D3 and the resistor R5, and the dimming signal Vdim is connected between the resistor R4 and the resistor R5.
And a dimming control unit is connected between the resistor R4 and the resistor R5.
And the cathode of the diode D2 is grounded.
The constant current source power supply circuit consisting of a voltage stabilizing diode ZD1, a resistor R2, a diode D1, a diode D2 and a triode Q1 supplies power to the 0-10V dimmer, and the dimming signal Vdim is connected to the dimming control unit through the voltage division of the resistor R3, the resistor R4 and the resistor R5; when mains supply alternating voltage is connected into a dimming port DIM+, the dimming port DIM-, and the dimming port DIM+ is cut off due to the reverse bias of a diode D4 in the alternating current positive half cycle; when the dimming port DIM-is in a negative half cycle of alternating current, the diode D2 is reversely biased to cut off the triode Q1, meanwhile, the voltage is applied to the resistor R3 and the resistor R4 through the diode D5 and the diode D4, the high voltage is not connected to the constant current source power supply circuit due to the reverse bias cut-off of the diode D3, and the dimming signal Vdim is clamped by the diode D5, so that the high voltage cannot be borne by the dimming control unit, the constant current source power supply circuit and the dimming control unit are protected from being damaged, and the normal dimming operation is not influenced.
In summary, the 0-10V dimming constant current source circuit allowing the mains supply to be connected can not only meet the constant current source power supply of the 0-10V dimmer, but also allow high-voltage power sources such as the mains supply to be connected in error without damaging the circuit, and has extremely low cost, and can be produced in a large scale and improve the reliability of the whole circuit.
The above description is only an example of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the scope of the claims of the present utility model.
Claims (4)
1. A 0 to 10V dimming constant current source circuit allowing mains access, characterized in that: including power supply VCC+, power supply VCC-, dimming port DIM+, dimming port DIM-, power supply VCC+ is connected with resistance R1 one end, zener diode ZD1 negative pole, the resistance R1 other end is connected with triode Q1 projecting pole, diode D1 negative pole, zener diode ZD1 positive pole, diode D1 positive pole and triode Q1 base, resistance R2 one end are connected, the resistance R2 other end is connected with diode D2 positive pole, triode Q1 collecting electrode is connected with diode D3 positive pole, diode D3 negative pole is connected with diode D4 positive pole, resistance R5's one end, diode D5 negative pole, dimming signal Vdim, diode D4 negative pole is connected with dimming port DIM+, power supply VCC-is connected with diode D2 negative pole, diode D5 positive pole, resistance R5's other end, dimming port DIM-.
2. The 0 to 10V dimming constant current source circuit allowing the mains supply to be connected in accordance with claim 1, wherein a resistor R3 and a resistor R4 are connected in series between the cathode of the diode D3 and the resistor R5, and the dimming signal Vdim is connected between the resistor R4 and the resistor R5.
3. The 0 to 10V dimming constant current source circuit allowing the mains supply to be connected according to claim 2, wherein a dimming control unit is connected between the resistor R4 and the resistor R5.
4. The 0 to 10V dimming constant current source circuit allowing mains access of claim 1, wherein the diode D2 cathode is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222985534.7U CN219068421U (en) | 2022-11-10 | 2022-11-10 | 0-10V dimming constant current source circuit allowing mains supply to be connected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222985534.7U CN219068421U (en) | 2022-11-10 | 2022-11-10 | 0-10V dimming constant current source circuit allowing mains supply to be connected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219068421U true CN219068421U (en) | 2023-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222985534.7U Active CN219068421U (en) | 2022-11-10 | 2022-11-10 | 0-10V dimming constant current source circuit allowing mains supply to be connected |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219068421U (en) |
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2022
- 2022-11-10 CN CN202222985534.7U patent/CN219068421U/en active Active
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