Where can I find a good article on amp power supply?

TNT-Audio has a very good article on amp power supply that describes various designs. IT explains the purpose of RC network and small value caps as well as purpose of dual rectifiers. The diagram you show correspond to fig 4/diagram 4 in the article.

What is a good power supply for a hifi amplifier?

So ultimately, the primary characteristic needed is stability, all things considered, the power supply should have no effect on the amplified audio by way of fluctuations in DC potential available to the amplifier circuitry. Practical power supplies for HiFi amplifiers could be linear, switch mode or (less practically) batteries.

What is a single supply amplifier?

SINGLE-SUPPLY AMPLIFIERS Single Supply Offers: Lower Power Battery Operated Portable Equipment Simplifies Power Supply Requirements But Watch Out for: Signal-swings limited, therefore more sensitive to errors caused by offset voltage, bias current, finite open-loop gain, noise, etc.

Where should a power supply be located?

From a physical design standpoint, the power supply should be located in such a way that it has the least opportunity to induce hum into the amplifier circuit particularly in an integrated amplifier where there is a preamp handling low level signals (like a phono input).

How much power does an amplifier need?

FTC and EIA specifications only require amplifiers to operate continuously at 1/8 of their rated output power. This allows designers to save money in the design of both the amplifier and the power supply. Most consumer amplifiers use this approach.

How does a single supply op amp work?

So the circuit of Figure 1b is limited to +13V output by output swing capability and –13V by negative common-mode range. A single-supply op amp is specifically designed to have a common-mode range which extends all the way to the negative supply (ground). Also, its output stage is usu-ally designed to swing close to ground.