I need to output 27v dc, but dont want to use 3- 9v battery in series becuase that will become expensive, and independent power supplies are pricy, how can I create this output short spending money, there must be a method to do it, I have adjectives sorts of electronics and computer power supplies all over the place. Help please!!
Answers: The power supplies you hold likely don't contain a transformer that'll step down to 27 volts or at lowest possible close enough to where on earth you can get a voltage regulator to put out 27v. It'd be cooperative to know also how much current you require for your application. Might be useful to know why exactly you require 27v and if there's any tolerance. A potential candidate could be a 24V 100mA wall wart from Mouser for $5.85
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