Re: C-Bus and Wire-wound transformers - HELP

["David Buckley" <db@xxxxxxx>]

--- In ukha_d@xxxxxxx, "Jon Payne" <jgpayne@b...> wrote:
> Or an IGBT based dimmer which tackles the rise-time problem...
>
> jon

I'm assuming by IGBT based you are suggesting trailing edge dimmers.

I also fancy TE dimming as the solution, but I have a problem with
this - all the manfs of dual mode dimmers (ie LE and TE in one box)
say their dimmer either autoswitches to or you should manually
select LE for inductive (and resistive) applications, only using TE
for capacitive.  I dont understand why this is the case, as using TE
dimming looks like a no brainer for all types of load.

If anyone has any insight on this, I'd really like to understand
this.

All the sinewave dimmers I've seen are also IGBT based, however they
have much larger cooling requirements than LE/TE dimmers, as they
are using the IGBTs in linear mode, rather than mostly switched
(except for the edges) as you would with a LE/TE dimmer.  They are
also much pricier!