Hi all,
I've always just used mains and a linear power supply but now need to design something to use a DC wall wart. I assumed there would be a selection of DC-DC converters that could invert +15v to give me -15v at half an amp or so, but it seems I was wrong, unless I'm looking for the wrong thing? If anyone has done this, part numbers would be much appreciated.
How do the manufacturers do it? I'm guessing they're not doubling the +15v to 30v then splitting the rails? Are they using standard switchers in a non standard way somehow?
I realise Meanwell and others do prepackaged modules that would work but at $20+ each is too much.
Thanks.
I've always just used mains and a linear power supply but now need to design something to use a DC wall wart. I assumed there would be a selection of DC-DC converters that could invert +15v to give me -15v at half an amp or so, but it seems I was wrong, unless I'm looking for the wrong thing? If anyone has done this, part numbers would be much appreciated.
How do the manufacturers do it? I'm guessing they're not doubling the +15v to 30v then splitting the rails? Are they using standard switchers in a non standard way somehow?
I realise Meanwell and others do prepackaged modules that would work but at $20+ each is too much.
Thanks.