Warning this is a tiny CT, measuring tiny currents. Don't fool around with those big things you see in a CT can!
I was playing with one of those small CTs on a lamp holder
My original intent was to get some ideas of what to look for if I was integrating this into a project. Short answer is there is plenty of current if you drive into about 1000 ohms and it scrubs off most of the noise. You get around a tenth of a volt with a 14w load, .5v with 60w load and 1.2v with a 100w load (into 1k ohm). That doesn't seem very linear but I didn't plot it.
The interesting thing for me was the wave form.
14w seems pretty sinusoidal
As the wattage (and output voltage of the CT) increases it starts affecting the wave form. 100w is pretty warped
When you plug in a CFL things really start getting weird
Greg, What sort of 'scope are you using there? It seems to suggest Texas Instruments, but I'm not sure about that. It certainly looks like it has the wood over my Tek-tronic 40MHz dual trace 'scope I have here. I have wanted a new DSO for some years, but are they all the stuff they are made out to be? Could I justify an NZ$4000 'scope, is the question I ask myself.
Sorry for the thread-jack.
Last edited by Trumpy; 11/12/1004:16 AM.
Let's face it, these days if you're not young, you're old - Red Green
If I had waited around a little I probably would have got a 485 DM44 when the IBM office was going away. That is really far more scope than I have any use for. I don't really need the capabilities of the 465 either but it is a nice display. It hasn't been calibrated for 16 years so I wouldn't trust it for any serious work. Some of the pots are getting a little cranky too.