Quote:
Originally Posted by troypiggo
Sorry guys. The power supply has "DC Regulated Power Supply" on it. Doesn't that mean it's a regulated power supply?
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Well yes it's regulated in that it regulates an output voltage but it's/they are not good at producing an output with low "Hum" or "Noise" levels.
Even Step down transformer PSUs can have hum & noise but switch-modes are more susceptible to creating noise on their outputs. It's due to the they way they "switch" a high DC voltage (at high frequencies...15- 30Khz) to produce pseudo AC...which is in turn rectified, regulated & filtered to produce an output voltage.
Switchmodes are used because they are more efficient, size is smaller & use less copper.
Good or well designed switchmodes are very good & efficient bad ones or badly produced ones are Ok for general work..but not for sensitive equipment.
As I said I have a version of that PSU my self...and it creates noise. So I adapted a computer PSU as a 12VDC supply (for my mount supply). Sure it's a switchmode as well but in general these are very well designed & create less output noise. It's ok for my equipment ATM.
Soon...in the future I'll be building my own step-down transformer DC regulated supply for the mount & other equipment. I prefer them as it's much easier to produce a nice "clean" output.
Not many step-down transformers PSUs are available now days...pity!