My take on a discrete shunt voltage regulator

[HiFiNutNut]

Oh, another thought here. I am turning circles myself and am getting some head spins.

Now it is almost a 2m version!!! Only J4 is still a 2SK170 without R15, and 2n3819 is there instead of 3k3. All others are 2m version.

Just check that 2n3819 has an Idss = 2 - 20mA.

Should I swap the 2n3819 with a 3k3 resistor? No brainer or getting into a new territory?

P.S. Ha, Ha! I cannot escape the duty of a tester again, as it is now almost a 5m.

 

[iko]

Yes, use the resistor, less prone to oscillate.

 

[MMAdams]

@iko (I think). Said once long ago there might be future work on a higher voltage version of his shunt reg. Has there been any development along these lines? I'm interested in a shunt reg capable of +/- 55 volt in and +/- 45 volts out at 0.5A.