a fuzzy science on old transformers 2

finding the optimum simple design for 9V linear adapter

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using std. parts 7805 , TL431

the load peak/-step response is somewhat unexpected here

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using low ß , high power switch (such as *MJE13003)

the load regulation stays below acceptable

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using bridged LM78L05 and LM324

fine tuning the bridge may induce better results this 1 however won´t pass because it´s load response

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same as above with an attempt to add a reference to be used in better line rejection ...

... can´t gain steady reference - won´t test all possible situations for such a noisy one = reference failure , halt, halt

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using low ß , high power switch* and random intuitive design

looks pass - tough i don´t know about higher frequency load responce

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[Eop]