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Old 30th March 2017, 10:17 PM   #1
catd is offline catd  Europe
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Join Date: Mar 2017
Location: Germany
Default new, from germany

Hello all!
Im new to the forum, from germany. Sorry, if my english sounds a bit strange to you.
After about 40 years I'm back to audio electronics. I started these "hobby" in the age of 12 and stopped it with about 25, when my diy-audio-equipment was ready and other things became more important.
During my studies of industrial design back in that days I came up with the idea of a Pre-Amp, using permanent-magnet activated reed-switches for volume, source selection etc., and its housing should not be in the commonly found rectangular shape. I never finished it. Last winter I found again some well stored parts of the projekt, especially a lot of reed-switches and resistors for a volume attenuator, and i decided to start again with it. In the search for some key words from then like "Preamp", "Supra", "Elektor" etc. I found this forum.
I did not want to write here until I have something more to show from my plans. But in another forum article came the question of a regulated power supply for a power amplifier. Therefore, I first show my Stereo-PowerAmp from the last 1970s which contains such a supply. (at "solid state pics", when my post is set free by admin)

Here are some first new parts of the old project:
Diy-24-Step-Reed-Volume-Switch. PCB and some mechanic parts
Attached Images
File Type: jpg poti_2.jpg (75.7 KB, 27 views)
File Type: jpg poti_mech_1.jpg (25.0 KB, 27 views)

Last edited by catd; 31st March 2017 at 07:24 AM. Reason: Adding a link, which wasn't possible because the linked post was not freed yet by a mod. A bit laborious, isn't it?
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Old 31st March 2017, 12:43 AM   #2
rif is offline rif  United States
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Welcome! Your English is fine, no worries.
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