Is it possible to use some kind of triac dimmer circuit as a first step in a power supply?
My idea is to have the triac chop of half of the sin wave (and half of the energy) and then rectify, filter and then let a normal 78XX clean up the rest.
The reason is that usually you just rectify the 24VAC and end up with appox 30VDC with is to much for most 78XX (and other regulators).
You end up with a big heat sink and it cant deliver any amp.
But how would that kind of dimmer circuit look like, I mean it had power it self...
What would happen if we start with something like this?
And then insert a rectifier (and the rest) where the "load" is?