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JSR06 Sjöström Super Regulator Power Supply
Click on the pictures to get a larger view.
Some background can be found in my JSR-01 project.
This design is based on my JSR-01 project and the goal was to make the pcb with hole mounted parts as small and versatile as possible.
The design is based nearly to 100% of the original super regulator. My design goal here was to make a complete power supply, universal with many options and great flexibility.
This design has very interesting features:
- Extremely low output noise.
- Very low output impedance in the audioband.
- Easy to change the output voltage
- 115 or 230 VAC as input voltage
- Standard rectifier bridge or high performance built by discrete parts with sizes up to TO220, like MUR820, MUR860 or similar.
- Well-known and well-tested in serious and demanding applications.
- The pcb has room for holemounted DIL08 opamps or for surface mounted SO08 opamps.
- Snubberized raw voltage using 0805 SMD resistors. This is for removing resonance's.
- LM431 or LM385 as 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.
- Extra trimming resistor for the LM431 voltage reference.
- Extra trimming resistors for tuning the output voltage.
- Frequency compensation for the opamp added as an option. By that you are more free of choosing opamp.
- Two methods of feeding the opamp with supply voltage.
- All resistors 10 mm between the holes so it is possible to use a cut and bending machine for those parts.
- Current peak limiting resistor after the rectifier bridges. Reduces the harmonics in the raw voltage.
- Not particularly hard to make to independent regulators. Convenient if you want to make two positive voltages. This is not tested and verified.