Lamp control circuit and lamp control method
A control method and circuit technology, applied in the field of lighting
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0049] figure 1 It is a structural block diagram of a light control circuit shown according to an exemplary embodiment, and the light control circuit includes:
[0050] The signal module 11 is used to output the control signal, the control signal includes K channels of PWM signals with adjustable duty ratio, K≥2, figure 1 The case K=4 is shown. The signal module 11 may be a signal output device or circuit such as a microprocessor.
[0051] The control module 12 and the driving module 13, the input signal of the control module 12 is a control signal, when at least one PWM signal in the control signal is a trigger level, the control module 12 outputs an enable signal to the driving module 13 . The trigger level can be high level or low level.
[0052]When the driving module 13 receives the enable signal, it outputs a driving signal to connect the two ends of the lamp bead string 14 . The driving signal provides a driving voltage for lighting the LED bead string 14 . The LED...
Embodiment 2
[0058] Based on the light control circuit provided in the first embodiment, the second embodiment takes the case of K=4 as an example to describe the structure of the light control circuit.
[0059] The signal module 11 outputs 4 channels of PWM signals, and the LED lamp bead string 14 includes 4 groups of single-color LED lamp beads. Among them, the 4 groups of monochrome LED lamp beads are RGBW lamp beads, and the 4 channels of PWM signals correspond to the 4 groups of monochrome LED lamp beads one by one.
[0060] refer to figure 2 As shown, in one embodiment, the control module 12 includes 4 first triodes and 4 first diodes. The four first triodes are marked with icons 121-1, 121-2, 121-3 and 121-4 respectively, and the four first diodes are marked with icons 122-1, 122-2, 122-3 and 122 respectively -4 logo.
[0061] The connection points identified by the same letter in two or more drawings are the connection points that are connected to each other. figure 1 Connecti...
Embodiment 3
[0074] The control module 12 can have various specific structures, and the third embodiment provides another structure of the control module 12 . refer to Figure 5 As shown, in one embodiment, the control module 12 includes 4 second diodes and a second triode 124. The 4 second diodes are represented by icons 123-1, 123-2, 123-3 respectively. and 123-4 logo. figure 1 Connection point B, connection point G, connection point R, connection point W in the Figure 5 Connect the corresponding connection points one by one.
[0075] The second triode 124 is a PNP type triode, the cathodes of the four second diodes are respectively connected to a PWM signal corresponding to the control signal, and the anodes of the four second diodes are all connected to one end of the first resistor. The other end of a resistor is connected to the base of the second triode 124, the emitter of the second triode 124 is pulled high, the second resistor is connected between the emitter and the base of ...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com