Can I count on a voltage that’s set by the 10 turn pot to remain constant over years of use? Any thing else to consider versus fixed output alternatives, eg, temperature impact?
2.5-9V Fine-Adjust Step-Up/Step-Down Voltage Regulator S9V11MA
Hello.
We have not specifically characterized the stability of the potentiometer over extended periods of time like that, but I generally do not expect it to be an issue if the pot is not physically disturbed. For example, if the regulator is mounted on a robot, vibrations could slowly shift the position of the pot over time. You could use a small dab of glue to help keep it in place if that is a concern.
The temperature impact between the adjustable and fixed voltage regulators is probably very similar. One benefit of the adjustable versions (aside from offering intermediate voltages that we do not offer as a fixed-output version) is to be able to adjust to your system’s needs (for example, to compensate for voltage drop over lengthy wires).
Brandon