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Old 27th January 2002, 03:51 AM   #1
hifi is offline hifi  Sweden
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Question Help! (with shunted volyme controll)

How would this work?.... im not exactly sure on how to calculate when the last 4 relays are open ..?
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Old 27th January 2002, 06:55 AM   #2
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What the heck are you going to use so many relays for??
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Old 27th January 2002, 09:11 AM   #3
hifi is offline hifi  Sweden
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64 steps (volume controll) but some will give the same damping not a problem though since i will use a mcu to controll them

/micke
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Old 27th January 2002, 02:59 PM   #4
paulb is offline paulb  Canada
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I'd use a spreadsheet to simulate it all. You could play with values for hours.
I'd put one leg of each relay to ground, make the wiring easier.
This looks like an unusual arrangement. Aren't there more conventional ways to do the same thing?
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Old 27th January 2002, 11:06 PM   #5
hifi is offline hifi  Sweden
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such as?.....
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Old 27th January 2002, 11:59 PM   #6
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Try a Digital Pot!! BOth analog Devices and dallas semiconductor(now maxim IC) ave simple digital pots that have a simple up down interface.

www.analog.com
www.maxim-ic.com
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Old 28th January 2002, 12:39 AM   #7
paulb is offline paulb  Canada
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hifi,
Search this site. I've seen threads about this topic. Search for volume control AND relay.
I believe there was one arrangement used in a Pass design. Also look for R-2R network - based designs.
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