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Old 5th February 2006, 07:22 PM   #1
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Default Relay

Hello,

I would make a relay based attenuator, controlled with microcontroler. But I'm wondering wich relay to use, normal or dual coil (bi-stable in french).
I think dual coil is better for noise and heat but is there a difference in life-time?

Thanks
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Old 19th February 2006, 11:15 PM   #2
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Quote:
I think dual coil is better for noise and heat
Oui, si le courant est relâché après avoir changé le relais de position. Sinon, ça fait du bruit dans les 2 positions.
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Old 19th February 2006, 11:31 PM   #3
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Un relais "reed" durera beaucoup plus longtemps -- and is much faster as well.
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Old 19th February 2006, 11:59 PM   #4
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I didn't know reed relays... Seems interesting!

Are there some disadvantages compared to normal single coil relays?
Ok, found some, magnetic fields around it can switch it. So it should be shielded also.

As for advantages, I found a lot of them : Longer life, sealed contacts, etc.

By searching a bit... Wet reeds are better I suppose?(Except for the fact that the difference is the mercury...)

They are pretty silent I think also. By looking at some, I found that the relays in my synth are reed relays, and they don't make noise at all.
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Old 20th February 2006, 02:55 PM   #5
klitgt is offline klitgt  Denmark
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Default Re: Relay

Quote:
Originally posted by hugobors
Hello,

I would make a relay based attenuator, controlled with microcontroler. But I'm wondering wich relay to use, normal or dual coil (bi-stable in french).
I think dual coil is better for noise and heat but is there a difference in life-time?

Thanks
Essayez içi:

http://www.pickeringrelay.com/

C'set vraiment très rare de rencontrer des gens qui ignorent que la langue officielle dans ce forum c'est l'anglais, mais ça me donne l'occasion de pratiquer mon français médiocre!
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Old 20th February 2006, 04:11 PM   #6
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Quote:
C'set vraiment très rare de rencontrer des gens qui ignorent que la langue officielle dans ce forum c'est l'anglais,
I know, but even if it's the official language, not everyone is talking only that!

... Hey, we're all from different countries in this topic also!
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Old 21st February 2006, 11:20 AM   #7
klitgt is offline klitgt  Denmark
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Quote:
Originally posted by DragonMaster


I know, but even if it's the official language, not everyone is talking only that!

... Hey, we're all from different countries in this topic also!

Hopefully you did not take this too seriously , just joking because I had the opportunity to practise a little!
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