Hi all,
I'm building a power supply with LM317 and 2N3055.
Schematic is safe, because build this pcb for friends of mine, and it works; not the same for my example !!!!!!
So, in short:
Bridge output is 16,6V Correct up to now.
About Vref Measure points A B
Must always be 1,25V, if i understand LM317 datasheet.
For Pot 4.7KOhm value = 0 read 1,23 V and Output voltage - Measure points CD 14,1 decreasing to 2.1V
Pot 4.7KOhm value = 4.7KOhm read 0,68 V and Output voltage - Measure points CD 16,2V
See Measures-Points.pdf.
Can i replace LM317 with LM338, in this circuit?
Any idea for anything to replace, and how to know right one?
Thanks a lot guys and nice day.
jm
I'm building a power supply with LM317 and 2N3055.
Schematic is safe, because build this pcb for friends of mine, and it works; not the same for my example !!!!!!
So, in short:
Bridge output is 16,6V Correct up to now.
About Vref Measure points A B
Must always be 1,25V, if i understand LM317 datasheet.
For Pot 4.7KOhm value = 0 read 1,23 V and Output voltage - Measure points CD 14,1 decreasing to 2.1V
Pot 4.7KOhm value = 4.7KOhm read 0,68 V and Output voltage - Measure points CD 16,2V
See Measures-Points.pdf.
Can i replace LM317 with LM338, in this circuit?
Any idea for anything to replace, and how to know right one?
Thanks a lot guys and nice day.
jm
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