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Farad
Super3 Double Regulated
Linear Power Supply

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Outside EU (excl. Tax): €437.19 Incl. Tax: €529.00

Quick Overview

  • Worlds best linear power supply
  • Available in 3.3, 5, 6, 6.3, 7, 8, 9, 10, 12, 15, 18 & 19 V,
    other voltages between 3.3 and 19 V upon request
  • Maximum output current 3 A
  • Input voltage 100-120 Vac or 220-240 Vac / 50-60 Hz
  • IEC input, GX16-4 output connector
  • High inductance, double shielded toroidal power transformer
  • Pi-filter supply input with over 85,000 µF electrolytics
  • Ultra high capacity: 1.3-2.5 Farad, using Super Capacitors
  • Low noise regulator, post filtered with Pi-filter using ultralow ESL caps
  • µP-protection against shorts, over-temperature/current/voltage
  • Unique crowbar protection: impossible to damage your equipment
  • Aluminum housing; fully shielded against EMI/RFI interference
  • Radiation free to prevent polluting other equipment
  • 0.5/1 m DC power cable with 5.5/2.1 mm or 5.5/2.5 mm barrel included
  • Weight 1.6 kg / 3.5 lbs
  • Small dimensions 130x40x200 mm / 5.1x1.6x7.9 inch

Farad | Super3 Double Regulated | Linear Power Supply

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The absolute reference in linear power supplies

The Farad Super3 brings great improvement in any system, not only when replacing a switch mode power supply (SMPS), but also when replacing a linear power supply and even if your gear has an internal SMPS, or multiple. An easy way to take the performance of your streamer, D/A converter, (phono) preamp, turntable, settop-box, video processor, media player, headphones amp, electrostatic and active computer speakers and the like to a much higher level. Even connecting it to your network switch, router or modem will yield a substantial improvement. The results are a less harsh ("digital") sound, far more dynamics and a lower noise floor with more detail; simply more music!

The Farad Super3 Power Supplies are unique because they incorporate the latest of capacitor technology, EDLC Super Capacitors. They have an IEC power input and a gold plated GX16-4 output connector for flexible DC power cable choice, high induction double shielded power transformer, schottky rectifiers, a choke power supply buffering, and a first stabilization charging the Super Capacitor bank to create a dynamic battery alike source. From this source the output voltage is stabilized by a fast transient, low noise regulator and post filtered with ultra low ESR polymer and reversed shape high voltage ceramic capacitors. All is mounted in a small shielded aluminum enclosure on a high quality gold plated PCB with star ground and star power supply configuration. Farad power supplies are fully protected against short circuit, over- and under voltage, reversed voltage, over temperature and surge currents.

The DC power cable supplied as a standard is unshielded. Farad also delivers a higher quality cable at additional costs. Level 1 DC power cable is shielded and also has a gold plated connector at the receiver side, while level 2 uses mil-spec non-inductive tin-plated copper Teflon 4x16 AWG DC power cable and an Oyaide DC connector. On Level 1 and 2, special connectors like XLR and Lemo can be mounted as a service, without additional costs.


What are Super Capacitors?

EDLC Super Capacitors, also called Ultra Capacitors or booster capacitors, are the latest development in capacitor technology. They are based on a porous carbon material with very high surface area and very small layer distances, resulting in very high charge density. Super capacitors combine a very high capacitance with high pulse power capability and low ESR values. In short, they act like batteries without their disadvantages.

Why does Farad use Super Capacitors?

Where typical large electrolytic capacitors have typical values up to 10,000 µF, or 0.01 F, even the 3 A Super3 Power Supply has a capacitance over 1 F meaning 100 times more energy storage! Super capacitors can deliver high pulse currents and have low ESR, resulting in a very stable and clean, battery like, power input for the final low noise linear regulator. The better and more stable this input, the better the final result.

Is it true that Super Capicitors have a short lifespan?

Have a look at the Super Capacitor manufacturer curves for the capacitors Farad use in their designs:

All capacitors in the designs will be used below 80 % of the rated voltage. Even at full load continuously the capacitors temperature will stay below 50 degrees. In practice the supply will be 40 degrees maximum at normal use (below 2 A average). So lifetime expectancy according to the manufacturers curves will be over 10 years worst case, in practice more like 20 years of caplife time.

Why does the Super3 only have one fixed output voltage?

The power dissipation of a linear regulator is dependent on the ingoing and outgoing voltage and current. Therefore the only way to make the output flexible is to make the input voltage flexible or by using switching power regulators, as many other brands do. Both of these ways are very sub-optimal designs. Since Farad is aiming to be the absolute reference in regulated linear power supplies, Farad specifically choose to go for rigid, but fully optimized fixed output voltage in their power supplies.

Why is Farad using the Super Capacitor power bank as smoothing caps and don't they switch between one bank while loading the other?

There are several reasons they don't do this. First it means extra switching electronics in the supply lines, second it means that you are using only half of the capacity from the super caps at a time. Third and we think most important reason: A value of 1 Farad means the capacitors are able to deliver 1 A of current for 1 second with 1 Volt drop. Suppose we have 10 F capacitance, deliver 2 A current from our supply and the regulator can typically handle a 0.5 V drop. This means capacitor banks have to be switched every 2.5 seconds... This means the final regulator gets a 0.4 Hz triangle wave with 0.5 V amplitude as an input signal, instead of a steady DC. Because in our supplies we use a special PCB layout, special custom wound transformers with double static shielding, choke smoothing and pre-regulation before the supercapacitor banks, so the noise residue will be minimal and also the necessity for switching.

What is the importance of star grounding and star configuration power supply?

When two electrical points are connected to each other, the connection between them is never perfect and will always have inductance, capacitance and resistance. When current is drawn through this connection (whether it is wire, PCB trace or point to point), a voltage will be induced, adding noise to the signal. The presence of these problems can be heard when disconnecting interlinks between devices as loud plops, squeezing and buzzing. Although almost always present, it is not normal and a good system does not have these noises.
By starring ground lanes and power lanes, the distance of the connecting lines will be reduced to zero inside the device and thus also the induced noises. A supply can measure really good on a test bench, but when not properly starred, it will give a lot of additional noise in a system.

Why doesn't Farad use power line filtering in their power supply?

A good power supply acts in fact just as a power line filter. Farad uses specially custom wound shielded high inductance toroidal transformers. By adding chokes and fast filtering capacitors around it, they already have better initial power input, without adding additional components to the signal chain, keeping things more simple and better.

What kind of protection circuitry does the Super3 Power Supply have?

Most commercial linear and SMPS power supplies will pass full voltage when their final regulator, or parts around it break down. This will almost certainly result in irrecoverable damage to the device to which it is connected to. Farad power supplies are not only protected against the usual things like shorts, over-temperature and over-current, but also have a microprocessor controlled crow bar protection against over-voltage. In short this means the supply will short itself and blow its own fuses when a dangerous too high output voltage is detected, so the load (your equipment) will never be damaged!

Why does Farad use gold plated 4 pin GX16 output connectors?

Output impedance of a power supply is really important. A total output impedance of 100 mΩ (typical in many commercial power supply systems), already gives a voltage drop of 300 mV when the load is 3 A. This results in bad regulation, of course the impedance needs to be as low as possible. Output impedance is made up by the regulator, the PCB traces, connectors and cables. Farad choose for a low impedance, high transient, low noise output regulator. On the PCB they use power planes, so wide organic shaped traces. They do not like to use barrel (or similar low level quality) connectors, since they have high contact resistance, typically in the order of 30 mΩ. Instead, Farad typically uses the gold plated GX16 4-pin connector. Gold plated GX16 connectors have a typical contact resistance of 3 mΩ, and with two pins parallel this is even halved, giving much lower total output impedance.

Why does the Super3 use an output connector and not a solid attached cable?

Farad knows the importance of cable swapping, it can make a big difference in the final quality of your system. For the DC output wire they use 4 strands of 0.5 mm² tin plated copper as a standard. This tin plated copper wire has a high sound quality and does not have the disadvantages of silver(plated) wires. The cable impedance is an important factor in the quality of a power supply. The total of 1 mm² / 17 AWG wire area Farad use means only 16 mΩ per meter (8 mΩ per 50 cm). For example a 0.33 mm² / 22 AWG (widely used in power supplies) wire has a resistance is 52 mΩ per meter, running up to 84 mΩ per meter for a 0.20 mm² / 24 AWG wire. Also, two thinner wires parallel sound better than one wire of the same thickness.


Reviews:
Multitest externe 12-Volt voedingen door Jaap Veenstra @ alpha-audio.nl
Mytek Brooklyn by Marja & Henk @ 6moons.com



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