The Capacitance Discharge Module (CDM) is a drive module used to drive lamps and other electrical equipment. Its working principle is based on the charge and discharge process of the capacitor.
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The CDM driver first converts the DC voltage of the power supply to the high-frequency AC voltage, and then forms an LC resonant circuit through the inductor and capacitor elements. When the capacitor is fully charged, a certain amount of energy is stored in the circuit. When it is necessary to drive an electrical device, the capacitor releases the stored energy and transmits the current to the device being driven.
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By controlling the charging and discharging process of the capacitor, the flow direction and size of the current can be accurately controlled, so as to achieve the drive of the device. Yaoguang CDM driver has the advantages of high efficiency, stability and controllability, and is widely used in LED lamps, electric vehicles and other fields.
The CDM driving principle is to control the lattice temperature by controlling the wavelength and intensity of the electrical signal, and change the lattice temperature to control the lattice size, so as to extrapolate the optical parameters of the feedback electrical signal, forming a closed-loop control, to achieve stable output.
When the input electrical signal is decoded, the lattice temperature is controlled according to the wavelength to change the cavity length and thus change the frequency of the output light. At the same time, the lattice expansion is controlled according to the strength, so that the cavity length and reflected power are changed to achieve stable and accurate output.
Yaoguang cdm uses the USB communication protocol, and the driver accesses the USB interface through the operating system kernel to achieve data transmission and device control. After the device is connected to the computer, the driver will automatically identify the device type and load the corresponding driver, so that the operating system can use the device normally.
The core of cdm driver is the control transmission module and data transmission module, using these modules to achieve equipment control and data transmission.
The driver design needs to take into account the characteristics of the device and the compatibility of the operating system to ensure that the device can work properly in a variety of different environments.
The CDM drive is to adjust the organic molecular layer structure of strontium titanate crystal under the action of electric field by controlling voltage signal, so as to realize the rotation transformation and color change of crystal.
Specifically, by adjusting the voltage size and frequency, the degree of polymerization at each level of the crystal can be changed, so as to control the phase and amplitude of the reflected light to achieve the desired color display effect. The drive technology has the advantages of fast response, bright color, high contrast and low energy consumption.