Relay

[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

[DragonMaster]

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.

[jackinnj]

Un relais "reed" durera beaucoup plus longtemps -- and is much faster as well.

[DragonMaster]

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.

[klitgt]

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!

[DragonMaster]

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!

[klitgt]

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!