Power rail higher than usual

[Dennnic]

Maybe it's then intentionally made with higher voltage, so it doesn't drop too low with load. I've told him I'll need up to 0.3 amp out of it.

I gotta ask...was there a problem with excessive or even audible noise while using the Naim power supply?

No, it sounds very nice with it's own power supply.

 

[TonyTecson]

Hi.

I'm building a diy power supply intended to supply current to Naim Supernait 1 integrated amplifier.

So far, I've placed transformers in place, along with diodes, capacitors and RC filters. I've bought discrete regulators, relatively expensive, that are connected to the ends of aforementioned RC filters.

However, one of the discrete regulators outputs different voltage. Instead of 24V that are needed for naim circuitry, it's reading +25.2V.

I know that op amps wouldn't be particularly picky about their voltage, but would higher voltage damage the Naim's preamplifier circuitry?

Best regards,
Stefan

nothing to lose sleep about, if those were unloaded rails, expect them to drop some, say 2 volts...

 

[Dennnic]

nothing to lose sleep about, if those were unloaded rails, expect them to drop some, say 2 volts...

Very well. Thanks for posting 🙂

 

[TonyTecson]

all power supplies can be analyzed as Thevenin voltage sources, with ideal voltage source and an internal resistances, so at no load, the terminal voltage is equal to the ideal voltage, so then, as current is drawn, the terminal voltage decreases by how much current is drawn, this current drops a voltage across the internal resistances, this is called regulation....

 

[rayma]

From the mfr:
"The SuperTeddyReg consists of two stages, a voltage regulator and a low pass filter. The voltage regulator is in charge of providing a stable voltage regardless of variations in the input voltage due to load or mains voltage variations."

Clearly this circuit is deficient by the mfr's own definition.