Most two way switching problems are caused by some interference on the two white control wires. Some basic checks can be done. Remove all the two way switching connections and check the dimming operation. Next connect a remote bell-press switch with completely separate wires (hence not in the conduit or existing harness – run loose [...]
Dim to a comfortable low light level and set (MINDIMT) this level as the dimmer minimum level (11 clicks).
Preferably not. Shuttle does not qualify any dimmer model to be used with wire wound transformers due to the possibility of dimmer and/or LED damage. In fact, a number of prominent dimmable LED manufacturers/suppliers issued release notes which state that the LED's are not to be dimmed when powered from wire wound transformers. Unless the [...]
In the case of dimmable LED's the advantages of the direct 230VAC products makes this the preferred choice. Most often the MR16 LED lamp is not supplied with a transformer. This then not only brings compatibility of the LED and transformer into question, but also compatibility of the transformer and dimmer and in most cases [...]
Low voltage MR16 halogen lamps have a physically much thicker and shorter filament than that of it's 230VAC counterparts. This produces a more even light distribution, generally ensures a much longer lamp lifetime and makes the low voltage lamps less prone to possible over voltage or “spikes” from the mains. The MR16 lamps are also [...]
In most dimming applications it is more desirable to use a trailing edge dimmer (SDIM-T/SDIM-T-LED). Trailing edge technology ensures less EMI being generated in electronic transformers, is 100% silent, usually reduces or even completely eliminates high inrush currents into lamps or the electronics of the lamps, is generally capable of handling a larger maximum load [...]
Yes, because even when full on, dimmers supplied the lamp with a maximum of 92-95% of the full AC voltage and hence provides a slight energy saving. As the lamp is dimmed more, the RMS voltage across the lamp is reduced and the energy saving becomes more. As an example, an incandescent or halogen lamp [...]
Only a leading edge dimmer causes a buzz in transformers and in itself. When a transformer is operated on a normal non-dimmed AC cycle, it is quiet because it turns on “softly” when the AC starts off from zero volts. On leading edge dimming the transformer experiences a sudden electrical and mechanical “shock” when it [...]
The diagram below shows a normal 220VAC 50Hz cycle. If the dimmer delays the turn on of the cycle, it is a leading edge dimmer, but if the dimmer delays the turn off of the cycle, it is a trailing edge dimmer. Leading edge dimming hence produces a very quick or sharp inrush of voltage [...]