SM MODELL BAU LED current controller 1000mA SM5004

The LED current controller is a switching regulator especially for the constant current supply of LEDs. The previously used bias with all its disadvantages is replaced by this electronics. To expand the possibilities, the LED current controller also has a control input and can be directly controlled by corresponding receivers with digital output or switching blocks. In many cases, no further electronics for the lighting are necessary.

LEDs have a characteristic curve (the behavior of current to voltage), which makes it difficult to easily supply the voltage present in our models. A supply with a constant voltage is not possible because the smallest changes in the voltage or even in the temperature of the LED have a major impact on the flowing current.

The power supply of LEDs for lighting a model therefore usually includes a pre-resistance in front of the LED. This is necessary to limit the current of the LED and to minimize the effects of voltage changes. Nevertheless, this does not yet result in a constant current, a decreasing voltage (battery is empty) also reduces the electricity and thus the brightness. The tensile resistor also consumes energy and becomes hot accordingly.

The LED current controller solves these problems. It is a switching controller especially for the constant current supply of LEDs. The previously used bias with all its disadvantages is replaced by this electronics. The LED current controller provides the constant output current independently of the input voltage with a very high efficiency.

This means:

• significantly less losses
• hardly heating (no cooling of the electronics necessary)
• smaller battery possible for equal timer
• constant brightness regardless of battery voltage
• very simple dimensioning, nothing needs to be adjusted even when the supply voltage changes

The LED current controller is available in five different currents and is selected to match the LEDs used. The current should correspond to the nominal current of the LEDs. In continuous operation, of course, the cooling of the LEDs is decisive, in case of doubt a lower current should be chosen.

To expand the possibilities, the LED current controller also has a control input and can be directly controlled by corresponding receivers with digital output or switching blocks. In many cases, no further electronics for the lighting are necessary.

A digital signal from 3 V to 28 V switches on the LED current controller. Not only the controls through the receiver or a lighting module is conceivable here, but also any other signal as in the simplest case a switch.

For more information, please refer to the user manual.