This is a high quality power supply with a continuously variable stabilized output adjustable between 0 and 30VDC. the LM 723 is the heart of the power supply which drives the BD137 and then the 2N3055. The circuit provides short circuit protection. And has great stability at voltage changes.
Datasheet file1: Click here to download BD135.pdf datasheet. Datasheet file2: Click here to download LM723.pdf datasheet.
Comments
JORGE RESTREPO wrote on Jun 1, 2008
TRANSISTOR BD 135 IS INVERTED. MALFUNCTION.FAILURE..FAILURE
for project wrote on May 2, 2009
for collage use
Electronic wrote on May 11, 2009
BD 135 miror .. Bd 135 emitter connec to 2N3055 beyz
from russia wrote on Sep 27, 2009
Max output is only 15v depending by internal LM723 stabilisizer from pin 6.
aussie-knows-how-it-works wrote on Apr 22, 2010
Output will theoretically reach 30V but the current limit is a bit of concern! 4 amps by my calculation which could result in destruction of the 2N3055 even if it is mounted on the largest of heatsinks when the output voltage is set low and current limit is reached. Urgh.....who designs such crap?
KASHISH TANEJA wrote on May 3, 2011
we had worked out on this circuit and we found few faults in it , the connection of transistor bd135 is wrong , it is to be like that in place of emmitter it will be coollecter and vice-versa and in it we will use a 15-015 transformer....
Rating Rating: 8.00 / 10 (1 Vote cast)
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