IGBTs (Insulated Gate Bipolar Transistors) have the ability of being turned off anytime during the phase (TRIACs and SCRs can only be turned off during the zero-crossing of the waveform). Therefore, IGBT Dimmer is complicated, It can be phase controlled dimmer, sine wave dimmer.
a.)FPC IGBT Dimmer and RFC IGBT Dimmer, IGBT Phase controlled dimmer (advanced types of phase control dimmers):
All of Triac dimmer have one thing in common: the phase control waveform is far from ideal for dimming them. In many cases the load will perform poorly; in extreme cases the load (and possibly the dimmer) will be damaged. In the last decade, more advanced types of phase control dimmers have been produced using a type of power semi-conductor called an IGBT.
IGBT Phase controlled dimmer can be "Forward phase controlled" dimmer call as FPC IGBT Dimmer and "Reverse phase controlled" dimmer call as RFC IGBT Dimmer. The output wave of "Forward phase controlled" dimmer is same as TRIAC dimmer.
Dimmer wall switch, SCR Triac dimming led dimmer wall switch ETL, UL, CUL approval. Slide Preset Electro-Mechanical 0-10V Slide Dimmer for use with LED or Fluorescent Ballasts and Power Supplies with LED locator light.
SCR ( Triac ) dimming has been used for dimming methods of incandescent lamps and energy-saving lamps earlier. It is also the most widely used dimming method for LED dimming.
SCR dimming is a kind of physical dimming. Starting from AC phase 0, the input voltage is chopped, and there is no voltage input until the thyristor is turned on.
Its working principle is to produce a tangential output voltage waveform after passing the input voltage waveform through the conduction angle shear wave.
Applying the tangential principle can reduce the effective value of the output voltage, thereby reducing the power of ordinary loads (resistive loads).
The thyristor dimmer has the advantages of high adjustment accuracy, high efficiency, small size, light weight, and easy remote control, etc., and it is dominant in the market.
The advantages of SCR dimming are higher work efficiency, stable performance, and low dimming cost. How do you choose dimmable LED light bulbs?