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Old 17th January 2003, 02:58 PM   #1
xsnailx is offline xsnailx  Poland
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Default bls relay input selector

this is my attempt to create such a selector please comment my design
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Old 17th January 2003, 04:54 PM   #2
LBHajdu is offline LBHajdu  United States
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This is from a plan am working on. It can be used to switch 2 balanced channels or 4 unbalanced channels between 3 sets of inputs. However I found something that works better for me so Iím dropping it.

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Old 17th January 2003, 07:40 PM   #3
xsnailx is offline xsnailx  Poland
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what did you found??
you mean not to use relays?
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Old 18th January 2003, 02:07 PM   #4
LBHajdu is offline LBHajdu  United States
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Iím using latching relays instead. Itís like a normal relay except the contact is magnetized so it sticks to what ever side itís pulled to by its two coils. They only need a pulse of power to switch. So I can use 3 momentary push buttons on the front cover to switch between channels, I think the project looks and feels classier that way. I would never put ss junk in the signal path unless itís absolutely needed. The trick to the whole thing is how to get the other relays to come back up (unlatch) when I new one goes down (latches). Iíll give you a clue itís all done with diodes, very similar to what I have in the PCB pick I posted.


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Old 18th January 2003, 03:14 PM   #5
xsnailx is offline xsnailx  Poland
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Default latchin realys - my idea

i tought about mechanical switches to unlatch them but dropped that idea
will try some different in the evening
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Old 18th January 2003, 08:18 PM   #6
xsnailx is offline xsnailx  Poland
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use another relay to unlatch them??
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