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subumann
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Posts posted by subumann
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Doing it the hard way gives more satisfaction. ;D
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Milimetric paper to be exact.
I do that for years. ;D -
Last one.
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One more.
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Just some pictures.
In a few days tests and maybee case with meters and stuff...
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Did Romania tell you something ? :) :) :)
So, how about a ( toroid ) 18V / 75VA trafo ? ( 2*18V / 150VA for a dual power suply - i allready have this one ). I dont mind if the maximum voltage will be a little less then 24-30 V. -
Thanks Audioguru !
But i was triyng to replace the ops with cheaper versions because, for a dual suply the costs of the entire project will be very close (or beyond) to a "store ready made" suply 0-30V/0-3A.
If i replace 081 with LM 301 (with compensator caps) will there be a problem ?
Or maybe LM318 ?
PS: 6*OPA...=6*14$=84$
2* TRAFO=2*22$=44$
the rest=~20$
TOTAL=~150$ - displays not included, heatsink not included, case not included...
And a suply with 2*LCD is 140-150$ !!! -
Just wondering if these could be replacements for TL081 :
OP07C
NE5523
MC1558
LM118-218-318
RM4558
LM301
UA748
And if yes what are the adjustments (trimmer, bypass caps etc.)
By the way, with the original specs the power suply work great.
Thanks in advance!
0-30 Vdc Stabilized Power Supply
in Projects Q/A
Posted
Now seriously, i start building electronic things back in 1984 ...+- 1 year... The computer is a normal way to do it now but when i am in a hurry i prefer the paper. I'm more used to it.