petek said the following on 24/01/2006 21:20:
Just as a matter of interest we have a small "touch" table lamp on top
of the television. The lamp switches on/off by touch and also changes
brightness level by touch. When we turn on the television the lamp
turns on (or off if it's already on). Sometimes when changing channels
with the remote control the lamp also switches a brightness level up. I
presume it's something to do with changes in the magnetic field around
the TV which is switching the lamp. So, a change in the power circuit
mentioned in the original post may be creating a small change in the
magnetic field which is being picked up by the lamp. Does this sound
logical or am I way off the mark?


Actually, it's the change in electrostatic field around the telly that
affects the touch lamp. The sensor for the lamp is very high impedance.

HTH