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Re-build Babo Zen (Papa's Zen5 w. jfet inputs)
Re-build Babo Zen (Papa's Zen5 w. jfet inputs)
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Old 29th April 2007, 08:18 AM   #1
Babowana is offline Babowana  South Korea
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Default Re-build Babo Zen (Papa's Zen5 w. jfet inputs)

I'm re-building Babo Zen,
into one block stereo.
This time with my diy PCB ^^~

Here is the first shot of PSU PCB.


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File Type: jpg babozen-psu const1.jpg (97.9 KB, 1043 views)
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Old 29th April 2007, 08:23 AM   #2
Zen Mod is offline Zen Mod  Serbia
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Location: ancient Batsch , behind Iron Curtain
Re-build Babo Zen (Papa's Zen5 w. jfet inputs)
ya nutz!

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Old 29th April 2007, 09:37 AM   #3
Babowana is offline Babowana  South Korea
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Almost, yes!

After etching, I applied lead-free solder all over the
copper tracks. As an unquality effect, the board
slightly bent due to the process of cooling-after-heating
(shrinking stress).


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Old 29th April 2007, 12:30 PM   #4
Babowana is offline Babowana  South Korea
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Okay, here is the second shot of bottom view
where all components are soldered on.


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Old 29th April 2007, 12:48 PM   #5
Babowana is offline Babowana  South Korea
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Here is the 3rd shot of top view.

C-L-C is changed to C-R-C.
Each C is of 22,000uF/35V.
Each R is of 0R5.

The last Cs are of 33,000uF/35V,
where the rail voltages are supplied.

The wake-up call caps are of 4,700uF below
the zenner-current-controling R of 680ohm.
The series zenners are of 9.1V+9.1V+4.3V.

Hmm. . . lack of time. . . Will continue after
10-day home leave. . .



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File Type: jpg babozen-psu const3.jpg (26.3 KB, 851 views)
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Old 29th April 2007, 02:28 PM   #6
Zen Mod is offline Zen Mod  Serbia
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Location: ancient Batsch , behind Iron Curtain
Re-build Babo Zen (Papa's Zen5 w. jfet inputs)
Quote:
Originally posted by Babowana
Here is the 3rd shot of top view.

C-L-C is changed to C-R-C.
Each C is of 22,000uF/35V.
Each R is of 0R5.

The last Cs are of 33,000uF/35V,
where the rail voltages are supplied.

The wake-up call caps are of 4,700uF below
the zenner-current-controling R of 680ohm.
The series zenners are of 9.1V+9.1V+4.3V.

Hmm. . . lack of time. . . Will continue after
10-day home leave. . .




I wish you nice trip

let be with ya!
__________________
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa... by Mighty ZM
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Old 29th April 2007, 03:35 PM   #7
Babowana is offline Babowana  South Korea
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Quote:
Originally posted by Zen Mod


I wish you nice trip

Thanks, Zen Mood
Will be in mood.

See Ya!


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Old 30th April 2007, 01:04 AM   #8
jupiterjune is offline jupiterjune  United States
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Nice PCB's!

Any changes planned for the jfet inputs?

JJ
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Old 30th April 2007, 06:32 AM   #9
Babowana is offline Babowana  South Korea
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Quote:
Originally posted by jupiterjune


Any changes planned for the jfet inputs?

JJ

No planning yet.
Partly because all measurements look fine,
and mainly because the sound is superb.


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Old 1st May 2007, 02:21 AM   #10
jupiterjune is offline jupiterjune  United States
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Trust your ears! If it sounds good, that is all that matters!

JJ
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