#MARKX PHASE DIMMING FULL#
#MARKX PHASE DIMMING SERIES#

Module protects itself during temporary over-current and over-voltage conditions.Patented RTISS™ circuitry compensates in real time for incoming line voltage variations:Ĭompensates for ☒% change in RMS voltage/cycle and ☒% Hz change in frequency/second.Automatically selects between forward phase/leading edge (e.g., magnetic low-voltage) and reverse phase/trailing edge (e.g., electronic low-voltage) dimming based on load.Use switching power module for non-dim loads. Up to 30% of the unit’s capacity may be used for incandescent lighting. Incandescent and electronic low-voltage sources may be controlled on the same zone.Lutron TuWire™ electronic fluorescent dimming ballast.Electronic (solid-state) low-voltage transformer (must be manufacturer approved for reverse-phase control dimming).Magnetic low-voltage transformer (iron core).Operates these sources with a smooth continuous Square Law dimming curve:.Load (output) power: Phase independent of control unit.120 V control power, 120 V or 120-277 V load power, 50/60 Hz, phase-to-neutral.Models available for 120 V or 120-277 V load power.Models available for 120 V control power.Up to 3 power modules may be wired on a single GRAFIK Eye zone.Provides power and dimming for one zone.Automatically selects leading-edge or trailing-edge dimming for low-voltage transformers.May be used to control incandescent, electronic low-voltage, magnetic low-voltage, and neon/cold cathode lighting sources, as well as Lutron TuWire™ fluorescent dimming ballasts.Provides capability for a zone on a GRAFIK Eye control unit (or other product) to dim a fully loaded circuit of lighting.

#MARKX PHASE DIMMING SERIES#

The ratio of 68.6/1.4 = 49 and that is close to 50.Downloads Grafik Eye Guide (pdf) Grafik Eye 3000 Series Selection Guide (pdf) At 5% brightness the values listed are 425 V and 129,000 ohms with a calculated power of 1.4 W and a listed power of 0.7 W. I also wonder why at 100% brightness the calculated power from 310 V and 1400 ohms calculates to 68.6 W and the lamp power is listed at 35 W. It is interesting that for a brightness ratio of 100/5= 20 that the power ratio is 35/0.7 = 50. See Chapter XV page 463 ('Criterion for Distinction between an Arc and a Glow Discharge.') and Chapter XVI of 'Fundamentals of Engineering Electronics', William G. These values imply that operation is in a glow discharge region rather than an arc discharge. Equivalent resistance of the lamp at 100% brightness is 1400 ohms and at 5% it is 129,000 ohms.

#MARKX PHASE DIMMING FULL#

For a 35W/T5 the voltage drop is 310 V at full brightness and 425 V at 5% brightness. Mentioned is that below typically 20% brightness the lamp requires more than self heating of the filaments. Here is a reference that is useful on the general concept of dimming fluorescent lamps and includes some quantitative data on lamp voltage drop. Maybe a Google search on the specific components you used might indicated how these function. I do not have an answer to your question. Assuming any reasonable market for this the UL and development costs should not be a big factor either. In my opinion this dimmer is way overpriced for what is inside and the labor to make it. With 120 V input and a 75 W incandescent lamp load this corresponds to RMS voltages of 116 V and 24 V across the lamp. The maximum brightness position turns the Triac on at about 45 deg, and minimum is about 142 deg. This dimmer requires a neutral and appears to be able to start at the minimum dimming position. Yellow is the phase shifted variable output. Open up a Lutron SF-10P dimmer and you will see this full excitation wire, red, comes from the output side of the on-off switch. However, this should only be powered when the lamp is to be operated. This is why there needs to be a full excitation hot wire to the ballast. If you want to dim the lamp to a low level, then external heating by a filament transformer is required. Once started the normal current at full brightness is enough to keep the filaments hot without external excitation. Filament type fluorescent lamps need the filaments heated to emit reasonable quantities of electrons.

Markx phase dimming