CN-224218547-U - Multi-gear color temperature control circuit based on voltage value control

CN224218547UCN 224218547 UCN224218547 UCN 224218547UCN-224218547-U

Abstract

The utility model relates to the technical field of LED color temperature adjustment, in particular to a multi-gear color temperature control circuit based on voltage value control, which comprises a controller module, a gradient voltage generation module, a gear change-over switch and a plurality of switch tubes, wherein a plurality of output ends of the controller module are respectively and correspondingly electrically connected with a plurality of light sources one by one through the switch tubes, an input end of the controller module is electrically connected with an output end of the gradient voltage generation module, a plurality of input ends of the gradient voltage generation module are respectively and correspondingly electrically connected with a plurality of gears of the gear change-over switch one by one, and the problems of complex structure and high cost of the conventional multi-gear color temperature control circuit are solved.

Inventors

ZHAO NANNAN
XU WEI
FANG RONG
LI JINQIANG
Lu Chuangdong

Assignees

吉安伊戈尔电气有限公司

Dates

Publication Date: 20260508
Application Date: 20250516

Claims (7)

1. The multi-gear color temperature control circuit based on voltage value control is characterized by comprising a controller module, a gradient voltage generation module, a gear change-over switch and a plurality of switch tubes, wherein a plurality of output ends of the controller module are respectively and electrically connected with a plurality of paths of light sources in a one-to-one correspondence manner through the switch tubes, an input end of the controller module is electrically connected with an output end of the gradient voltage generation module, and a plurality of input ends of the gradient voltage generation module are respectively and electrically connected with a plurality of gears of the gear change-over switch in a one-to-one correspondence manner.
2. The multi-stage color temperature control circuit based on voltage value control of claim 1, wherein the gradient voltage generation module comprises a plurality of resistor voltage division circuits, the voltage division values of the resistor voltage division circuits are distributed in a gradient mode, the resistor voltage division circuits are connected together to form a resistor network, the resistor voltage division circuits are respectively used as a plurality of input ends of the gradient voltage generation module, and the common connection points of the resistor voltage division circuits are used as output ends of the gradient voltage generation module.
3. The multi-stage color temperature control circuit based on voltage value control of claim 1, wherein the gradient voltage generation module comprises a resistor R3, a capacitor C2 and a plurality of resistors RS, the resistance values of the resistors RS are distributed in a gradient mode, one end of each resistor RS is used as an input end of the gradient voltage generation module, the other end of each resistor RS and one end of each capacitor C3 are electrically connected with one end of each resistor R3, the other end of each resistor R3 is connected with a power supply voltage, the other end of each capacitor C3 is grounded, and one end of each resistor R3 is used as an output end of the gradient voltage generation module.
4. The multi-stage color temperature control circuit according to claim 3, wherein the resistors RS are detachably and electrically connected to the circuit board.
5. The multi-gear color temperature control circuit based on voltage value control of claim 1, wherein the gear change-over switch is a dial switch.
6. The multi-stage color temperature control circuit based on voltage value control of claim 1, wherein the controller module is an MCU chip.
7. The multi-stage color temperature control circuit based on voltage value control of claim 1, wherein the switching tube is a MOS tube.

Description

Multi-gear color temperature control circuit based on voltage value control Technical Field The utility model relates to the technical field of LED color temperature adjustment, in particular to a multi-gear color temperature control circuit based on voltage value control. Background In the existing LED color temperature adjusting technology, PWM (pulse width modulation) or digital signal control modes are mostly adopted to realize multi-gear color temperature switching. However, the switching of the color temperature shift involves the adjustment of the duty ratio of the PWM signals of the multiple LED lamps (such as the mixing and matching of the cold and warm colors), so that if the PWM signals are adopted as the switching signals of the color temperature shift, multiple PWM signal generating circuits are required to be specially configured, the control difficulty is high, the control circuit structure is complex, and if the digital signals are adopted as the switching signals of the color temperature shift, the control logic circuit is required to be designed, and the circuit cost is high. Disclosure of utility model Aiming at the defects, the utility model aims to provide a multi-gear color temperature control circuit based on voltage value control, which solves the problems of complex circuit structure and high cost of the current multi-gear color temperature control. To achieve the purpose, the utility model adopts the following technical scheme: The multi-gear color temperature control circuit based on voltage value control comprises a controller module, a gradient voltage generation module, a gear change-over switch and a plurality of switch tubes, wherein a plurality of output ends of the controller module are respectively and electrically connected with a plurality of paths of light sources in one-to-one correspondence through the switch tubes, an input end of the controller module is electrically connected with an output end of the gradient voltage generation module, and a plurality of input ends of the gradient voltage generation module are respectively and electrically connected with a plurality of gears of the gear change-over switch in one-to-one correspondence. The gradient voltage generation module comprises a plurality of resistor voltage division circuits, the voltage division values of the resistor voltage division circuits are distributed in a gradient mode, the resistor voltage division circuits are connected together to form a resistor network, the resistor voltage division circuits are respectively used as a plurality of input ends of the gradient voltage generation module, and the common connection points of the resistor voltage division circuits are used as output ends of the gradient voltage generation module. Further, the gradient voltage generation module comprises a resistor R3, a capacitor C2 and a plurality of resistors RS, wherein the resistance values of the resistors RS are distributed in a gradient mode, one end of each resistor RS is used as an input end of the gradient voltage generation module, the other end of each resistor RS and one end of each capacitor C3 are electrically connected with one end of each resistor R3, the other end of each resistor R3 is connected with a power supply voltage, the other end of each capacitor C3 is grounded, and one end of each resistor R3 is used as an output end of the gradient voltage generation module. Further, the resistors RS are detachably and electrically connected to the circuit board. Furthermore, the gear change-over switch adopts a dial switch. Further, the controller module adopts an MCU chip. Furthermore, the switch tube adopts an MOS tube. The technical scheme provided by the utility model has the advantages that the gradient voltage generation module is combined with the gear change-over switch, the voltage value is directly mapped to the preset PWM signal set, the design of a traditional multipath PWM generation circuit or a complex logic circuit is omitted, the hardware architecture is obviously simplified, more importantly, the formation mode of the voltage value in the gradient voltage generation module is convenient and fast, the voltage value can be realized through simple application of various components, for example, different capacitors can be selectively charged to form different voltage values, or resistor voltage division of different resistance values is selected to form different voltage values, the cost is only 1/3 of that of the conventional scheme, the modularized expansion is supported, and the requirements of different gears are met. Drawings Fig. 1 is a schematic circuit diagram of a multi-stage color temperature control circuit based on voltage value control according to one embodiment of the present utility model. The device comprises a controller module 1, a gradient voltage generation module 2, a gear change-over switch 3, a switch tube 4, a resistor R3, a capacitor C2 and a resistor RS. Detail