So, in this resistor-pot arrangement, do I need to keep an eye on the current flowing through the circuit or the voltage across the resistor? Or would just Ohm's Law take care of the other once one is monitored?
The reason why I ask is because both current and voltage are specified for each type of tube, and I want to build a permanent arrangement for lighting up nixies, using a beat-up multimeter I have to monitor things up - but I don't know wheter to place it in paralel with the resistor to measure voltage or in series with it to measure current.
One other thing, is there a way to measure current without interrupting the circuit?
Sorry for the many basic questions!
