Quote:
Originally Posted by ohohyodafarted
The value of the resistance will not likely be a standard value, so get one of those tubular ceramic types with the adjustable slider band so you can adjust to the needed value.
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It is a great idea to use one of these! The calculation will get you very close, but there is a "second order" effect... As you drop the voltage applied to the circuit, the current drawn by the circuit will drop as well, and perhaps not in a linear fashion. Likely
slightly more than the calculated resistance will be required to produce the desired voltage drop. Always nice to be able to make a slight adjustment!
jr