@G3750 posted:
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- Can anyone recommend a DC step-up transformer to get 12VDC to 15VDC (or an adjustable value)?
Taking your question at face-value, you can get remarkably inexpensive DC-to-DC step-up "transformers" (oh, all right, converters) with adjustable output:
So these are less than $3 each and include screw-terminals so soldering may not be required. The previously linked example is indeed more compact and potentially puts out more power (I'd have to study the specs more) but at $25 each and apparently requiring soldering...yikes!