Go Back   Home > Forums > Blogs > RJM Audio Blog

If I put my notes here, I might be able to find them again later!
Rate this Entry

The (Xross-type) X-Reg Voltage Regulator (Stabilizer)

Posted 20th December 2016 at 05:47 AM by rjm
Updated 7th March 2017 at 08:09 AM by rjm (BOM 16b2 uploaded)

I've come this far so I might as well complete the trifecta.

This is the X-Reg circuit, with a new layout and component numbering to match the new S-Reg and Z-Reg boards. Each is a drop in replacement for the other.

Like its siblings, the X-Reg is a low current voltage regulator for line level audio. The output is about 9 V (adjustable up to 12 V) and the maximum load current is 50 mA without heatsinks, 100~150 mA with small heatsinks on Q1,2.

It is not a true regulator as there is no fixed reference and instead the output voltage is defined relative to the input voltage. The high open loop gain of the op amp is harnessed for very low noise and very high ripple rejection. It is necessarily a high feedback approach.

So, there you are: three mix-and-match power supply options for all your low voltage, low current audio needs.
Attached Thumbnails
Click image for larger version

Name:	xreg.png
Views:	114
Size:	125.1 KB
ID:	2145   Click image for larger version

Name:	pcb-xreg-16b1-brd.png
Views:	117
Size:	9.4 KB
ID:	2155   Click image for larger version

Name:	pcb-xreg-16b1-sch.png
Views:	326
Size:	13.0 KB
ID:	2156  
Attached Files
File Type: zip X-reg-16b.zip (63.6 KB, 63 views)
File Type: zip pcb-xreg-16b2-bom.zip (93.3 KB, 34 views)
Total Comments 0



New To Site? Need Help?
Copyright 1999-2017 diyAudio