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Old 3rd December 2019, 12:53 PM   #71
merlin el mago is offline merlin el mago  Catalonia
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Quote:
Originally Posted by cakyol View Post
I came across this just recently and these may make all other power supplies obsolete.
I ordered the Apollo to evaluate:

Frequency Converters Archives - KCC Scientific
Wich model?
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Old 7th December 2019, 12:40 AM   #72
tiefbassuebertr is online now tiefbassuebertr  Germany
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last posting (#9) under
Homebrew Motor Control Linn LP12 - Circuit Description wanted for Sine Wave Osc.
shows images from the inside of genuine device.
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Old 27th August 2020, 09:15 AM   #73
tiefbassuebertr is online now tiefbassuebertr  Germany
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There are three Lingo envelope versions from Linn, but only two PCB-Versions - go to the attached images.
Who can tell me the motor voltages from the Lingo version II and III ?
The motor voltages from the first version are 90VAC while the first seconds and 50VAC while normal operating.
If the values of voltages while normal operating lower, sound is definitely better.
In this case, to improve the sound, one could simply reduce the voltage for the motor on the first version by reducing the gain of U3, PIN 8-9-10 (the Linn AXIS motor, which have probably the same parameter, runs with only 20VAC).
Attached Images
File Type: jpg Linn Lingo I envelope.jpg (50.2 KB, 167 views)
File Type: jpg Linn Lingo II envelope.jpg (138.8 KB, 165 views)
File Type: jpg Linn Lingo III envelope.jpg (99.5 KB, 162 views)
File Type: jpg Linn Lingo PCB PCAS100V4-II.jpg (442.4 KB, 160 views)
File Type: jpg Linn Lingo PCB PCAS100V4-I.jpg (569.2 KB, 161 views)
File Type: jpeg Linn-Lingo PCB100L6 - 2001-II.jpeg (87.8 KB, 49 views)
File Type: jpg Linn-Lingo PCB100L6 - 2001.jpg (483.5 KB, 32 views)
File Type: jpg Linn Lingo II envelope using PCAS100V4+PCB100L6 .jpg (32.3 KB, 38 views)

Last edited by tiefbassuebertr; 27th August 2020 at 09:21 AM.
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Old 4th January 2021, 04:05 PM   #74
tiefbassuebertr is online now tiefbassuebertr  Germany
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comparison by a listening test between Linn's LINGO, homebrew clone of Dr. Fuß and AXIS power supply - go to post 12 under
Homebrew Motor Control Linn LP12 - Circuit Description wanted for Sine Wave Osc.
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Old 20th May 2021, 09:05 AM   #75
tiefbassuebertr is online now tiefbassuebertr  Germany
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post #1: various dead links replaced by available from webarchive
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Old 22nd June 2021, 05:35 PM   #76
tiefbassuebertr is online now tiefbassuebertr  Germany
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check out updates in post #1
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