Re: Mains Current Sensor Idea
- From: nico@xxxxxxxxxxx (Nico Coesel)
- Date: Tue, 24 Jun 2008 17:15:14 GMT
Vladimir Vassilevsky <antispam_bogus@xxxxxxxxxxx> wrote:
Nico Coesel wrote:
"Joe G \(Home\)" <joe.g@xxxxxxxxxxxxxxx> wrote:
The concept is very simple. I want to detect / measure current in a power
board and if over a certain current switch on another device.
I was thinking of using a current transformer, rectifying it and the
voltage output would be proportional to the current.
How accurate?
say 10mA to 500mA on a 240V AC device ...
What do you suggest.
An optocoupler. Two optocouplers for the increased dynamic range.
A hall sensor over a PCB trace.
Isn't 10ma too small for the Hall sensor?
Perhaps. I thought he was talking about the secondary current in the
current transformer. I guess the OP could make a coil with multiple
windings on the PCB so the Hall sensor sees a higher field strength.
--
Programmeren in Almere?
E-mail naar nico@nctdevpuntnl (punt=.)
.
- References:
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- From: Joe G \(Home\)
- Re: Mains Current Sensor Idea
- From: Nico Coesel
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- Mains Current Sensor Idea
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