Long Mao Shanghai solar LED street light program successfully developed Dimmer

Following the successful development of solar energy in the LED dimming lights after the procedure, further developed the procedure AC LED lights dimming system. The system uses the same principle to the pulse width modulation of the LED (PWM) dimming type of procedure, the use of this new type of tunable optical controller SLM4801 after the dimming curve can also be implemented, so you can save a lot of energy. As shown below, if the dimming after the adoption curve, at least 40% energy saving.

The controller is connected is as simple as connecting two power input lines and MT8985AP datasheet and a PWM dimming output line on it. LED constant current power supply line is added to the DC voltage on the drive module, so there are positive (red) and MT8985AP price and negative (black) points; and MT8985AP suppliers and PWM dimming output line (blue) is to add a PWM constant current LED dimming function dimming on the driver module control lines.

With one controller can control several constant current control module to control the number of virtually no restrictions, because the controlled constant current module has a 100k ohm input impedance. The figure is the control of the overall number of constant current module schematic diagram.

Therefore, in order to achieve dimming, the LED side must be used with the PWM dimming control line input constant current driver modules. Long Mao companies can provide the line of control PWM dimming input constant current drive module, including step-up and step-down type, and the models were SLM2842Sd and SLM2842Jd.

The technology has been patented.