As a follow-up to this prior question I'm looking for a zero-crossing mains (120V) power switching solution to mitigate the bounce-related EMI I'm getting using the "stock" traditional ON/OFF toggle switch connected directly to the step-down transformer.
In the abstract, what I'm looking for is this:
As I search on the web, I haven't come across anything so far that doesn't require a separately powered "control" circuit, with its own 24V (or whatever) DC power supply.
What I envision is something like one of those dimmer switches that fits into a wall junction box and takes whatever power it needs directly from the mains (without needing a transformer of its own).
Is there such a thing? I vaguely sense I just haven't found the right search term yet. I've been using "zero crossing triac circuit".