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Topic: Getting 5V D/C from single live wire A/C light switch (Read 3 times) previous topic - next topic

majenko



Connect a 5V DC wallwart in parallel with the light bulb.
http://www.dipmicro.com/store/DCA-0510
When the light bulb gets power, the wallwart gets power.

But OP need 5V DC without turnung on the light

Take out the lightbulb?
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retrolefty




Connect a 5V DC wallwart in parallel with the light bulb.
http://www.dipmicro.com/store/DCA-0510
When the light bulb gets power, the wallwart gets power.

But OP need 5V DC without turnung on the light

Take out the lightbulb?


Without access to both the AC line and neutral wires one cannot extract power for anything. It's like a bird sitting on a bare 2KV utility wire, nothing  dramatic happens to the bird because there in no current path.  ;)

Lefty


Grumpy_Mike


How do the 'no neutral wire' X10 modules like this do it?

There is a signal path through the load. But with not enough signal to actually do anything with the load.

BillHo


How do the 'no neutral wire' X10 modules like this do it?

It get the return path through the lamp.
Quote
Incandescent (2-wire) switch can only control resistive load ?40W (incandescent lamp or halogen lamps, etc). It
cannot control inductive or capacitive Load (like: Fluorescent lamps?save-energy lamps etc).

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