Lots of capacitors in a CLCLC configuration + a shunt voltage regulator: a high-end power supply for preamplifiers, phono stages and other HiFi equipment. The shunt regulator can run with a quiescent current of up to 500mA. With the onboard heat sinks, that you can see on the picture, the regulator ran well with 250mA quiescent current and no external load. In this configuration, the power consumption of the circuits is the highest, because the regulator has to “burn” the full quiescent current.

Both PCBs are available in our shop: UniSieb, Shunt regulator or as set of both PCBs.