You've all seen the ubiquitous symmetric PSUs: +/- voltage outputs, using a pair of LM3x7: 317 for + regulation, and 337 for negative.
Somewhere in the archives I recall a discussion on the innate limitations of negative regulators like 337s. Don't recall the specifics, but some noted that for +/- requirements, it would be better to simply use two pos. regs (e.g. 317's), but wire the downstream ckt backwards.
Pun unintended (!), what are some positives and negatives of this approach?
Somewhere in the archives I recall a discussion on the innate limitations of negative regulators like 337s. Don't recall the specifics, but some noted that for +/- requirements, it would be better to simply use two pos. regs (e.g. 317's), but wire the downstream ckt backwards.
Pun unintended (!), what are some positives and negatives of this approach?
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