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From: john larkin <jlarkin_highland_tech>
Newsgroups: sci.electronics.design
Subject: Re: hobby electronics
Date: Tue, 02 Jul 2024 15:42:45 -0700
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On Tue, 2 Jul 2024 23:06:54 +0200, Gerhard Hoffmann <dk4xp@arcor.de>
wrote:

>Am 02.07.24 um 20:27 schrieb Jan Panteltje:
>
>> Smurf mount is no problem:
>>   https://panteltje.nl/pub/test_board_wiring_side_IMG_3921.GIF
>>    can you spot the SMDs?
>> BTW that is a 1.5 GHz or so mixer on the right
>>   https://panteltje.nl/pub/test_board_component_side_1_IMG_3911.GIF
>
>I do not like the board material. Using perf board does not
>mean you have to give up acceptable ground.
>
>< 
>https://www.flickr.com/photos/137684711@N07/44311358915/in/datetaken/lightbox/ 
>   >
>
>Board material with ground mesh is from www.segor.de who were my
>local source in subway distance when I still was in Berlin.
>
>There is even nicer material from Vero, but it costs > 10 dB more.
>
>BTW this is a single sided version of Win's ribbon micro preamp
>with 70 pV rthz noise as shown in W & H's AOE3.
>Works as promised.
>
>Has anybody here heard of Win recently?
>
>cheers, Gerhard  DK4XP
>

Adapters with wire isn't difficult.

https://www.dropbox.com/scl/fi/p7o1vrtcqbop0je3va1r8/D140_Proto.JPG?rlkey=g18jcaqlevfk4ex4bj3efox1z&raw=1

https://www.dropbox.com/scl/fi/3h6qxsp3swq6p7mb4h3my/D200_BB_3.jpg?rlkey=afkx84wah5xmkaud0tqx57uzx&raw=1

https://www.dropbox.com/scl/fi/t8q4luubibzlr6oqyrlim/Z338_PCB.JPG?rlkey=o23l9jq8y81n7799po4quof18&raw=1

or of course, Dremel, with ground plane on the far side.

https://www.dropbox.com/scl/fi/ydvcds95zvzjq56bzeimr/Z412_Proto.JPG?rlkey=hyejukxbbnk3573engf0if4zt&raw=1

https://www.dropbox.com/scl/fi/f3redjl7umja5v8tsi2p5/Z382_1.JPG?rlkey=epclqs4lkx2cmdakne390bbae&raw=1

I don't like protos with parts on one side and wires on the other. I
can't see the connections. And once a proto is all hooked up, with
power connections and cables and things, I don't want to flip it over
to make changes.

Haven't heard from H or H in ages.

I need a microvolt precise unity-gain follower with nV and fA noise
and low bias current, but no opamp like that exists, and jfets are too
drifty.

AD8675 is about the closest I can find.