2V Battery Pulse Restore System fully take into account the inconsistent of the physical resonance frequency between lead sulfate crystal and battery plates, select the optimal frequency of pulse waveform and pulse current intensity to "break" and "decompose" the lead sulfate crystals, ensure the best restoration effect of sulfide battery without any damage to the plates. 2V Battery Restore System,Battery Optimizer Reviver Recover,2V Battery Equalize Charger,2V Cell Smart Charger Shenzhen Daceen Technology Co., Ltd. , https://www.daceen-sz.com
Advantages of Staggering the Burst DimmingThe ability to stagger the start of the burst dimming for each channel is especially important in applicaTIons where a large number of CCFL lamps are being driven. It is not uncommon to have 16 to 24 lamps used in a single LCD- TV application. With each lamp consuming 5W to 6W, this means a 24V inverter may be required to deliver up to 7A of current.
Without the ability to stagger the burst dimming, the DC power supply must ramp the current from 0A to 7A and then back to 0A at the burst dimming cycle rate which is usually between 100Hz and 300Hz. This action causes a heavy strain on the DC power supply. See Figure 1, where the total number of lamps has been split into four groups. A single-channel CCFL controller cannot stagger the start of the burst dimming for the lamps and, hence, all of the lamps turn on and off simultaneously, creating a heavy strain on the DC power supply. 
Figure 1. Application with no burst dimming stagger.
With the DS3994's four channels, the 16 to 24 lamps can be evenly divided into four groups. The start of the burst dimming sequence for each lamp group can thus be staggered to significantly reduce the strain on the DC power supply. See Figure 2.
Staggering the start of the burst dimming provides several advantages. It not only eases the strain on the DC power supply, but also allows the use of less bulk capacitance, thereby reducing system cost. It also reduces EMI and the possibility that the DC power supply could create audible noise. 
Figure 2. Application with burst dimming stagger. DS3994 Burst Dimming Stagger Calculator At the ftp site listed below, there is a calculator available to help DS3994 users determine what values ​​should be programmed into the Burst Dimming Stagger registers (BDS1 to BDS4). The calculator is an Excel spreadsheet in which the user inputs the lamp frequency, burst dimming frequency, and the desired burst dimming stagger. The calculator will output the values ​​needed for programming. Figure 3 shows the calculator.
ftp://ftp.dalsemi.com/pub/system_extension/AppNotes/
The example shown in Figure 3 assumes that the lamp frequency is 60kHz, the burst dimming frequency is 120Hz, and the application requires an equal stagger on the four lamp groups. Once these values ​​have been entered, the calculator will output the values ​​(in hexadecimal ) that should be programmed into the BDS1 to BDS4 registers. The BDS1 to BDS4 registers are nonvolatile in the DS3994, so the registers only need to be programmed once during the manufacturing process. 
Figure 3. DS3994 burst dimming stagger calculator.
Off-line 2V Battery Smart Pulse Restore System, also be called Battery Reconditioner or Battery pulse maintainer and Reviver: mainly used in the whole industry of Electric Forklift power battery, Sightseeing car power battery, Golf Cart battery, Wind and Solar energy storage battery, UPS Back up power system, Telecom base site battery, State Grid and Military battery for Sudden affair,etc.
The system is composed of 3 parts and a professional standard restore process: 1) 2V Battery Restorer Device(100~3000Ah); 2) 2V Battery Digital Pulse Charger; 3) 2V Battery Discharge Tester. Lead-Acid Battery Restoration system and Solution is applicable to all of Lead Acid Battery(AGM, GEL, VRLA, MF, Flooded, Dry, Traction, Deep cycle and Stationary), and widly used in 2V (200~3000Ah) cell batteries.
Product features
1. The smart pulse with fast rising front is resonant with the crystal of lead sulfate to dissolve the large lead sulfate crystal under the action of charging pulse, which can improve the capacity and prolong the service life of the battery.
2. No need to add any chemical additives, does not change the internal electrolyte composition of the battery, safe and reliable; For water loss batteries only need to add deionized water before restoring. The output pulse voltage and pulse current are strictly limited.
3. 12 independent output, can repair 12PCS 2V/100Ah-3000Ah cells at the same time without interference. Each group is equipped with a separate voltmeter to monitor the voltage of the repaired battery in real time.
4. Each system is equipped with "capacity selection" gear, according to the different capacity of the battery to select the appropriate gear, can be ensure better protection of battery plate in restore working.
5. Each system is provided with automatic repair function, automatic repair system will smartly adjust the pulse duty ratio based on the receptivity of the battery without anyone on duty
6. Each system is equipped with "High resistance repair" function, select the high resistance repair, specially for the long term stored batteries, even if the OCV is 0 Volt, but also can be easily activated.
Abstract: The DS3994 is a 4-channel controller for cold-cathode fluorescent lamps (CCFL) that backlight liquid crystal displays (LCDs) in TV and PC monitor applicaTIons. The device uses burst dimming to control the brightness of the lamps. A unique feature allows the start of the burst dimming sequence for each of the four channels to be staggered independently. A set of four nonvolaTIle registers allows the user to program the stagger for each channel. A calculator is available to help users determine the proper value for programming these registers. This applicaTIon note describes the advantages of staggering the burst dimming, and how to access and use the calculator.