Power supply with LM317 (1,3-25V/max.3A)

A good and simple lab power supply can made easy with LM317 and few componennts, like this schematic from an old roumanian almanac  TEHNIUM 1990:

Original article is:

My power supply is:

With an from vitange rounamin portable “TV Sport” I can adjust for 1,35 to 17,6V:

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