I wish to configure a preset pot as a rheostat/variable resistor (wiper connected to one end of pot) and have heard that multi-turn cermet trimmers cannot be used in this way due to the wiper not being designed to pass much current. I'd need to pass less than 1mA.
Would a multi-turn cermet trimmer be OK or would I be forced to use a single turn trimmer? If single turn would I be able to use cermet or be forced to use carbon?