When the power supply design has control chip, 0 - 10v dimmer, the output current is changed by 0 - 10v voltage. for example, when 0 - 10v dimmer is modulated to 0v, the current drops to 0, its light intensity is closed state ( with a switch effect ). when the 0 - 10v dimmer is da, the output current will reach 100 % of the power output, and the brightness will be 100 %. ( output voltage is constant ).
1 - 10v dimming principle: as described above, only the dimmer is 1 - 10v: when the resistance dimmer is set to the minimum 1v, the output current is 10 %, and the output current will also reach 100 % of the power output, and the output voltage will be 100 %. ( output voltage is constant ). note: 1 - 10v is no switch function, and cannot be set to the lowest shutdown effect!
Pwm ( pulse width modulation ): a control system
1. it is also adjusted by 1 - 10v or 0 - 10v, only the control system can control multiple line dimming, the load of thousands ( thousands ) w lights is implied, and the dimmer, the maximum is about 200 - 300 w.
2. PWM ( pulse width modulation ) system can connect a computer, network control, convenient control 0 / 1 - 10v dimming device has two independent circuits, a common voltage circuit for switching off or off to the lighting device power supply, and the other is a low voltage circuit, it provides reference voltage, the LED lighting level, 0 - 10v dimming controller is often used in the dimming control of the fluorescent lamp, now, because the led driver module with a constant power supply, and has a dedicated control circuit, so the 0 - 10v dimming device can also support a large number of led lights. However, the application of the disadvantage is very obvious, the low voltage control signal needs to add a new set of lines, which greatly improve the construction requirements.