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Modérateur : Audiophonics
I have built an ESS9038 dual mono dac. The I/V output board requires 12v-0v-12v which I am getting from a PC 250w SFX psu, (Which also has 5v and 3.3v required by the other boards). Obviously I require something better to get the most from the dac. Therefore I have chosen the following components to supply the 12v-0v-12v of the output board. I will power the 5v and 3.3v from a separate psu.
Reference : 14333 Dual Linear Power Supply
Reference : 3629 Toroidal Transformer 30VA 2x15v
I have chosen the 15v transformer rather than 12v because I believe there will be a forward voltage drop across the diodes in the bridge rectifier, perhaps 1.2v to 1.4v per rail. I am also upgrading the 2114D op amps on the output board with Burson V5 discrete op amps and I feel they would benefit from the slight voltage increase to roughly 13.6v-13.8v.
I would be grateful if someone could confirm that my judgement and choice of components is correct or not, as the case maybe. Thank you for any help you can give.