3 terminal Jung Super Regulator Kit

[fmak]

The tune method has nothing to do with foot tapping.

The idea is to hum along to the tune (out loud or in your head). The system that makes it easier to follow (and this works really well with unfamiliar music where you have no pre-defined responses) is the best.
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How do you hum to the tune of Mahler 5? Tune method I first heard from the Linn people. I have to say that it failed to convince, except with certain types of music. The SACD people are quite crafty in that they had chosen to promote Jazz and pop first; the classics are only so so. Again I go back to pyscology.

My point all the way is that the first post ought to be musicality, followed by whatever method an individual or group uses to assess merit. There is no general theory that can govern individual repsonses.

May be we should leave it there and move back to regulators.

Have you treid the LT1963 and 1964?

[ALW]

May be we should leave it there and move back to regulators.

That might be wise

Have you treid the LT1963 and 1964?

I haven't, but I will - any tips?

Regards,

Andy.

[fmak]

I haven't, but I will - any tips?

Andy
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I first treid the 1762 in SMT 8. Decided to use SMT to DIL adaptor. Failed probably due to sense track resistance or contact resistance. 600uv of 50 Hz instead of 20 uV noise.

LT1763 was easy, TO220 and worked to spec, 40uV noise as per spec dropping to 15 with 2200uF. Seems good for replacing 78xx. Ultra low drop out seems advantageous.

[dipchip]

Andy,

Have you ever measured the performace of a pre-regulator (like on your current board) feeding a normal 78xx fixed output linear regulator.

I'm wondering how large the performance difference is between the above, and your current implementation?

Thanks,
Craig Beiferman

[Fred Dieckmann]

"I'm wondering how large the performance difference is between the above, and your current implementation?"

A few orders of magnitude, like between a hundred and a thousand times better measured PSRR and output impedance for the op amp based regulator circuit.

I don't understand this fondness for 7800 type regulators. They are pretty bad and even a LM317 with bypassed adjustment is much better and not that complicated to build. Give it up folks. The only 7800 virture is they are cheap and simple.

[Bricolo]

Originally posted by Fred Dieckmann
"I'm wondering how large the performance difference is between the above, and your current implementation?"

A few orders of magnitude, like between a hundred and a thousand times better measured PSRR and output impedance for the op amp based regulator circuit.

I don't understand this fondness for 7800 type regulators. They are pretty bad and even a LM317 with bypassed adjustment is much better and not that complicated to build. Give it up folks. The only 7800 virture is they are cheap and simple.

So, Fred, what is in your opinion the best IC regulator design?

I mean a regulator+some passive parts around it, or even a prereg+regulator+parts.

The best thing we can build easilly, not a design with a regulator+opamp+2 bjt+36 ccs+passive parts

[Fred Dieckmann]

I believe I have already posted a suggested circuit or two.......

He who snoozes loses.

[Bricolo]

Originally posted by Fred Dieckmann
I believe I have already posted a suggested circuit or two.......

He who snoozes loses.

on this thread?
my 56K modem isn't in a mood to search all the forum this evening

[fdegrove]

Hi,

Putting a large cap behind the reg may be fine if the reg won't go into oscilation...

I agree that in that case the dominant factor will be the cap as seen by the circuit hanging off it it and I often find my self prefering that situation.

Then again, you may want to "perfect" that cap by using film bypasses, it will be fast and the regulator will only function as a buffer and keep the crud out of the supply.

Obviously, for high current demands it's not all that simple...

Cheers,

[peranders]

Originally posted by Fred Dieckmann
Has anybody asked Walt Jung about using his design (and it sure looks like his design to me) for commercial purposes? A magazine is selling the boards for his regulator with his permission if i am not mistaken.

I know you have the mounting foot print but, do you really think that thing is going to fit in someone equipment as an after market mod? ITS HUGE

You might want to see what the competition is doing..........

Fred, Audiocom's regulator is pure Sulzer regulator, LM336 2.5 volts, OPA27 and the opamp is feed from the unstablized side.

Nice piece of engineering altough the cap at the top isn't soldered!

The pcb has groundplane which is connected to "in".