Click here to buy a PCB for the Standard PSU
Click here for the build documentation
The Hifisonix Standard PSU features low noise, up to 400mA per rail output current, a MUTE relay driver to ensure when the load powers up or down there are no clicks or thumps, a +12V 40mA relay PSU and an auxiliary +5 or +3.3V supply (60mA max current draw) for powering any auxiliary logic or microcontroller circuits.
Output voltages are trimmed to exactly +-18 volts by means of two trimmer potentiometers. The power supply features very low full load (15 or 25W depending upon the power transformer chosen) noise with mains peaks at or below 100uV and thermal noise below -130 dBV.

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