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how to remote control a rotary switch based attenuator
how to remote control a rotary switch based attenuator
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Old 29th October 2008, 08:01 PM   #41
philibuster is offline philibuster  United States
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Join Date: Oct 2005
Default I might be way off...

Wouldn't it be easier (in some sense of the word) to use a relay-based remote controlled attenuator? Or try a really strong DC servo motor with a couple gears to gear it down?
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Old 18th January 2015, 11:55 AM   #42
Giordano is offline Giordano  Hungary
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Join Date: May 2005
Location: Hungary

During the last years I had some attenuators I tried. I got mercury wetted relays for the R-2R, with that it is much better, but still far away from a good rotary switch. Similar with LDR, I just do not like them.

Now, I decided that I make the rotary switch remote controllable. Please do not reply that why not LDR, or why not alps black or noble ... I decided I stay with the rotary switch.

Now, I'm looking for a mechanical solution. It would be good to find a magnetic clutch, what I put on the axle of the rotary switch and normally I can turn by hand freely, but when I want to remote control, I lock the clutch and turn by an RC servo for example. I know RC servo is noisy, but I energize only for the switching. Or a small stepper motor. Anyway. My problem is the clutch. If you know a working solution, please let me know,

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Old 20th February 2015, 09:44 PM   #43
danny_66 is offline danny_66  Belgium
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Join Date: Jun 2005
Location: Lierde
Here are some remote solutions from bentaudio
The shallco looks nice.

My RefSpeaker
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Old 20th February 2015, 10:29 PM   #44
merlin el mago is offline merlin el mago
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Location: Catalonia - Europe
I own the Shallco and works like a charm.
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Old 20th February 2015, 10:41 PM   #45
mlloyd1 is offline mlloyd1  United States
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Join Date: Feb 2001
Location: Northern Iliinois
how to remote control a rotary switch based attenuator
you can take a look at photos of the internals of the ayre kxr preamp.
might have some useful clues ...

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