SSR03 Sjöström Super Regulator Power Supply

VAT included

Ultra high performance dual voltage power supply with super regulator topology. It's an unpopulated pcb. As a service you can have the AD825 soldered by me.

Info here

Opamp x 2


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Interesting features

  1. Extremely low noise.
  2. Very low output impedance in the audioband.
  3. Well-known and well-tested in serious applications.
  4. Option for using three different kinds of smoothing caps, snap-in high performance, radial and axial.
  5. Option for the pass transisitor mounted on a heatsink on the pcb or with external cooling.
  6. Option for a pre-regulator LM317/337 mounted on a heatsink on the pcb or with external cooling.
  7. LM431 reference but I have made markings for anode, cathode and reference so it will be easy to mount any other 2- or 3 pin device like LM329.
  8. Trimpot for both reference and feedback in order to trim the output voltage easily.
  9. Short circuit protection via a PTC fuse and/or with a shunt and a transistor. The latter is more safe but will increase the output impedance somewhat. I recommend only the PTC fuse.
  10. All resistors 10 mm so it is possible to use a cut and bending machine for those parts.
  11. High output current, max 1-3 A but tests will determine how much. 1 ampere is garanteed.
  12. Nice looking pcb with double ground planes, gold plated pads and very thick copper, 70 um.

Data sheet

25.4 mm, 1"
226 mm, 8.9"
115 mm, 4.525"
98 g

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