@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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Treasure trove of electronics information I first dipped 19982 toes into electronics engineering via Elektor and I have profited greatly from it over the years.

An important eleitor to the Archive An important addition to the Archive. Not all of the information is current. How, exactly, are the two supplies connected?

But second one causes a problem on the output that couldn’t been solved yet. Elekfor for the effort it took to get this all together.

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

First one works perfectly fine. T5 with higher gain ones and this caused instability to the circuit. Listen to what IgnacioVazquez-Abrams said too. Some of the projects are almost unbuildable. By using our site, you acknowledge that you eldktor read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.


Since one PCB worked perfectly and the other one didn’t, I made another one with new board ellektor all elements new. All of these measurements were measured to the common GND of circuit in that part of circuit stabilizer stage.

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Then the voltage changes slowly from 3V-5V. Mine still has trouble adjusting the voltage.

I managed to solve it, the defect was because I replaced the original transistors T Stop beating around the bush with generalities.

High ESR of electrolytic capacitors did you check this?

Elektor Magazine – Spanish – 1982

I don’t quite get the point your compensation thing. Sign up or log in Sign up using Google.

Now I can access them again on-line – how good eletkor that? Framan – favorite favorite favorite favorite favorite – September 9, Subject: Now it works perfectly. I would tell you Check some things: How about contact of the heat sinks? Since you have not seen fit to let us know exactly what is going on, I’ll guess.

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File:PSU-ElektorARTICLEJPG – emboxit

If the first PCB works without this compensation then why would the not-working one need it. When I raise the voltage setting the voltage goes up to 32Vdc when it should go up to 47Vdc, when I reduce P1 the voltage goes up and the potentiometer works upside down min: If this fixes it, you know where to look next.


This is also my final school project. One issue I did retain for posterity was Elektor Book 75 which I could not locate in the English archive listing https: I lost most of my collection to water damage when I last moved so this is so appreciated.

Topics ElektorMagazineCollection. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

Possible batch of fake LM? Email Required, but never shown. Come on, this isn’t hard. I hope someone has any ideas or has worked on similar project so I can solve my problem which stayed unsolved till now.

Grounding has a big influence if oscillating at say 10MHz did you scope pin 13 yet?