- Joined Mar 19, 2019
Playing around with Op Amps and really need a rail supply instead of tying up my bench PSUs. 120VAC XFMR, full-bridge rectifier, and actually plan to use LM317 & LM337 adjustable voltage regulators. Would like the output from the regulators to be ~20V max. So it comes down to the XFMR. Powering Op Amps for breadboarding I don't need a lot of VA. Even 1VA should be gracious plenty. Digikey has lots of transformer building stuff but don't think I want to go that route. Where can I find a center-tapped secondary XFMR like this? Maybe even surplus 24VDC SMPSs? Any ideas?
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