Quote:
Originally Posted by kinetic
The last thing you want in your dome is something emitting RFI.
Modified webcams can pick up RFI really well because some of the
circuitry added to the CCD pins and timing chip act like wonderful
antennas.
The problem is made worse when you extend the CCD legs to
install it into it's own cold chamber or Peltier heatsink.
Trust me...been there.  |
Steve thanks for the explanation. As I dont use cameras I didnt think of that.
I have worked in the radio comms business for many years and can tell you that rfi from a switching dew heater should be very easy to tame.
Its not so much the switching cycle speed, but radiated harmonics from the switching transient. This can easily be remedied.