>Rich said: > >>However, 1W carbon-comp resistors are max-rated at about 350V, so they >>slowly change value with 1000V > > >Carbon comp resistors slowly change value even when they're MIL types, >unused, still in MIL sealed packaging. At 1000 volts, the change is rather >faster. > >I'm pretty leary about using standard carbon comps for anything these days