[CenSE] Alcor One Audio Decoder/USB Interface/Headphone Amplifier/Linear Power Supply

Customized imported transformer version is recommended for hifi audio equipment that needs better filtering and power supply for imported brand equipment!

As the source of equipment power, the power supply is undoubtedly the cornerstone of the whole equipment.

At present, many decoders/external sound cards are basically equipped with a switching power supply, which severely limits the performance of the decoder/sound card. In order to maximize the performance of power-restricted equipment, based on the accumulated experience of developing and upgrading DC-1/DC-2 external linear power supplies, we have also referred to many factory machines in terms of power handling methods. Developed a brand-new Alcor series, based on high-quality toroidal transformers, using high-stability benchmarks of floating isolation and brand-new servo technology, which has a qualitative leap in performance compared to the previous DC1/2.

But for audio equipment, in addition to performance, good component matching is also the key to a good sound. After carefully selected active components and carefully calibrated capacitor matching, after trying to match on many audio equipment, the results are very gratifying. The results.

For most equipment using external switching power supplies, the sound quality has been greatly improved on the basis of not destroying the sound balance, and it is worth a try. (At the end of this product chapter, there is a comparison of the principle of use between linear power supply and switching power supply. Interested fans can read the relevant content in detail.)

specification

Input voltage: AC 220V/110V 50/60Hz

Output voltage/current: 5V-24V 30VA

Power polarity: positive inside and negative outside

DC head size: standard, outer diameter 5.5mm, inner diameter 2.1mm, length about 10m

Power specification: 130*110*54 mm

DC power cord: 1 meter in length

Input power cord: National standard 1.5 meters

【CenSE】 Alcor One linear power supply

Imported porcupine bull with internal 30W power! Commonly known as the hedgehog cow!

About the difference and comparison of the principle of use of linear power supply and switching power supply "

We can imagine the stabilized power supply as the following situation: When you try to take out a continuous and small water flow from a large diameter tap water pipe, you can use two strategies: one is to use a Connect the valve and open the valve at a smaller position (we can regard the valve as a transistor) The voltage adjustment transistor of the linear power supply bears a lot of "pressure" (the specific performance is converted into heat dissipation) — —This is the working principle of the linear power supply; the second is to let the water from the big water pipe flow into a relatively large "bucket", and the small water pipe is connected to this bucket to fetch water, and then the big water pipe is turned on/off intermittently The valve on the upper side ensures that the water in the bucket will neither be completely absent nor overflow due to too much-this is the basic principle of the switching power supply.

The advantage of switching power supply lies in its high efficiency (the efficiency here can be simply regarded as the ratio of input power to output power), and the switching transistor works in a switching state, with low loss and low heat generation, and does not require a large volume and weight The radiator is therefore smaller in size and lighter in weight. However, when the switching power supply is working, due to the high frequency, it will cause interference to the power grid and surrounding equipment. Therefore, when you want to obtain high-quality sound quality, the interference of the switching power supply will have a greater impact.

In most cases, the switching power supply is used for preliminary conversion, and is used for circuits with low requirements on ripple and precision; at the same time, low-dropout linear power supply circuits (LDO) are used to obtain precise, low-ripple (noise) voltages such as Operational amplifier (OP-AMP), analog-to-digital converter (A/D Converter) use.