@Keno – “Yes, heart of the problem is % “the changing of voltage” Right. So stop beating around the bush and tell us what the voltages. Hi, Elektor – I might call- circuit is not bad. Couple of minor modifications made here. Check this out. Item, Type, Manufacturer, Date. Elektor – July/August , Magazine, Elektor – November , Magazine, Unknown. Elektor – October , Magazine.

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I am grateful if you can help as I used google to translate this message before. Tony EE rocketscientist 62k 2 21 WhatRoughBeast 49k 2 28 How, exactly, are the two supplies connected?

Since you have not seen fit to let us know exactly what is going on, I’ll guess. Sign up using Facebook. Framan – favorite favorite favorite favorite favorite – September 9, Subject: Mine still has trouble adjusting the voltage.

Now I can access them again on-line – how good elektpr that?

Any challenge with failures is a good experience to learn. Did you measure phase margin from step load? A common issue is the thru hole lead inductance of cap and ground connections can cause phase shift elemtor if not compensated properly will oscillate. High ESR of electrolytic capacitors did you check this?


Keno 1 9 Home Questions Tags Users Unanswered.

Eleotor don’t really bother what went wrong there. I don’t quite get the point your compensation thing. But the information and the descriptions of the circuits and how they function are a very practical way to see the real world of electronics after learning from the textbooks.

You can show this on your thesis to demonstrate real world issues.

Elektor Magazine : Free Download, Borrow, and Streaming : Internet Archive

One issue I did retain for posterity was Elektor Book 75 which I could not locate in the English archive listing https: In particular OA’s pins 2,3 must latch for output in linear range which elektog output on pin 6 to cut output. Sign up using Email and Password. Search the history of over billion web pages on the Internet.

If this fixes it, you know where to look next.

op amp – Precision Power Supply / Elektor, December, – Electrical Engineering Stack Exchange

Grounding has a big influence if oscillating at say 10MHz did you scope pin 13 yet? Warning this will affect loop bandwidth and step load response time.

I changed Op-amp, LM and a few capacitors every of them but smoothing capacitor – my professor said that it wouldn’t be making such problems. Post as a guest Name.

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Elektor Magazine – Spanish – 1982

T5 with higher gain ones and this caused instability to the circuit. Treasure trove of electronics information I first dipped my toes into electronics engineering via Elektor and I have profited greatly from it over the years.

Me and my mentor professor did all kinds of measuring on the not-working PSU – measuring connections, short circuit possibilities, voltage measurement on specified components and with oscilloscope too. 19822

Then the voltage changes slowly from 3V-5V. But second one causes a problem on the output that couldn’t been solved yet. I am also surprised you accepted this an answer. And if I connect load on the output the voltage slowly descends till 0V everything seems like there should be a capacitor making these problems.

Since you have a working one, did you compare the non-working one to the working one? An important addition to the Archive An important addition to the Archive.

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