02-08-2024, 07:21 PM
What are your plans for the 5V ProtoDAC supply?
The low noise 3.3V adjustable supply uses the LM317 regulator. There are many different ways of lowering the noise of the LM317, by adding a cap on the adjust pin or active circuits (D noizinator). I am not sure exactly how they are doing it on that board yet. Usually to get low noise from the LM317, you sacrifice transient response. That's fine for powering the Q7, which probably has relatively constant current requirements.
The low noise 3.3V adjustable supply uses the LM317 regulator. There are many different ways of lowering the noise of the LM317, by adding a cap on the adjust pin or active circuits (D noizinator). I am not sure exactly how they are doing it on that board yet. Usually to get low noise from the LM317, you sacrifice transient response. That's fine for powering the Q7, which probably has relatively constant current requirements.
Hardware: RPi Zero W | Allo Kali | ProtoDAC TDA1387 X8 | PGA2311 | Icepower 500ASP | Harbeth SHL5
Software: Moode 8.3.3
Source: Win 10 NAS
Software: Moode 8.3.3
Source: Win 10 NAS
