Alimentatore switching SMPS500R di Cristi misurato

http://hifiduino.wordpress.com/2011/02/26/resonant-smps-for-audio/

Interessante. Sembra di buona qualità. La frequenza per uso audio è ancora bassina.
Certo poteva dargli un carico maggiore...le magagne escono fuori sotto stress.

Cristie dice questo sulle eventuali misure

The SMPS500R both single and dual output has line and load regulation below 1%. this means that the output voltage variation from zero load to 100% load will not drop or increase with more than 1%. typical values which i measured are ~220mV for the +-54V one, ~190mV for 48V single one, ~120mV for 24V single one. output ripple is also below 200mV for >35V versions and below 100-150mV for lower output voltage ones.
Off course the ripple values can be improved by using an additional LC filter, on each rail. this will increase the size, weight and cost, and i would say that without major improvements in the sound quality of the amplifier. the main feature of this power supplies is the small size, high efficiency and reasonable price. if there will be request for an "ultimate" smps, i will consider doing that too. but at least one of the above listed features will suffer for this purpose. having a non-ideal power supply is not the end of the word for any amplifier, which will use it's PSRR characteristic to further improve what goes out to the speakers. at the end, the classical power supply made of mains transformer, rectifier, capacitors, cannot claim better performances when it comes to ripple and load regulation. of course can be better than a poorly designed smps with unregulated output, and without EMI filters.

A me serve un alimentatore con un'uscita singola per la mia famosa taa4100...quasi quasi mi sa che lo accatto.