bls relay input selector

xsnailx · 17th January 2003, 02:58 PM

this is my attempt to create such a selector please comment my design

LBHajdu · 17th January 2003, 04:54 PM

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 I’m dropping it.

Leve

xsnailx · 17th January 2003, 07:40 PM

what did you found??
you mean not to use relays?

LBHajdu · 18th January 2003, 02:07 PM

I’m using latching relays instead. It’s like a normal relay except the contact is magnetized so it sticks to what ever side it’s 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 it’s 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). I’ll give you a clue it’s all done with diodes, very similar to what I have in the PCB pick I posted.

Leve

xsnailx · 18th January 2003, 03:14 PM

i tought about mechanical switches to unlatch them but dropped that idea
will try some different in the evening

xsnailx · 18th January 2003, 08:18 PM

use another relay to unlatch them??

18th January 2003, 03:14 PM	#5
xsnailx diyAudio Member Join Date: Dec 2002 Location: Poland, Cieszyn	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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17th January 2003, 07:40 PM	#3
xsnailx diyAudio Member Join Date: Dec 2002 Location: Poland, Cieszyn	what did you found?? you mean not to use relays?

18th January 2003, 02:07 PM	#4
LBHajdu diyAudio Member Join Date: Feb 2002 Location: NY, USA	I’m using latching relays instead. It’s like a normal relay except the contact is magnetized so it sticks to what ever side it’s 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 it’s 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). I’ll give you a clue it’s all done with diodes, very similar to what I have in the PCB pick I posted. Leve

18th January 2003, 08:18 PM	#6
xsnailx diyAudio Member Join Date: Dec 2002 Location: Poland, Cieszyn	use another relay to unlatch them??

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