[Crowbar]

I'm looking for hermetically sealed small signal latching relays that use a spring rather than permanent magnet latching system, with high quality contacts.

 

[peranders]

May I ask the application? Why not with magnets?

 

[Crowbar]

Volume control and line-level output muting. I'm not doing the motorized attenuator thing again... too much work

People like Charles Hansen and John Curl will tell you magnetic materials near the signal influence sound. I'm skeptical, but considering they are successful designers, I give them the benefit of the doubt and do not assume they are wrong.

 

[peranders]

Don't believe everything you read, not even from those two even though they know a lot. How near is "near"?

Electrons are yellow. Why? Because I say so

 

[Crowbar]

I didn't say I believe them, simply that I can't disbelieve them either, so I err on the side of caution--if it's possible it can make a difference, then I won't.
Magnetic cores have hysteresis. That's why output transformers sound so horrible (to my ears at least). Some induction into the magnet and back into the audio signal will happen. Whether the small amount matters is a point of debate, however I can't be sure the effect will be below -120 dB.

 

[peranders]

It's quite a difference when you talk about transformers since the whole audio signal is passing through the iron core. It's possibly a better strategy to build a better enclosure and use a better PSU.

 

[Crowbar]

I already use separate CSS-fed shunt regulators on every section and separate power supply, digital, and analog sections sub-enclosures.

 

[Crowbar]

So, no one has any clue? :/

 

[Crowbar]

 

[trains are bad]

Quote:

Electrons are yellow. Why? Because I say so

I'm an EE graduate student, and my lab mates universally agree that electrons are yellow. When a new person moves in, the first thing we ask is 'what color are electrons?'

The answer, without fail, is 'yellow'.

 

[Crowbar]

trains, I don't give a **** about your off-topic crap; take your lame jokes elsewhere! Last time I checked, the thread topic was "I'm looking for hermetically sealed small signal latching relays that use a spring rather than permanent magnet latching system, with high quality contacts."

When I get an email response notification and interrupt my work to check what I expect is some useful information, the last thing I want to read is what passes for 'humor' around here!

Moderators, I request that all posts in this thread other than the first post are deleted.

 

[peranders]

Quote:

Originally Posted by Crowbar /img/forum/go_quote.gif

Look around you. How many are concerned about this? Not many, I'd think and if you really want something I'll guess you'll have to do it by yourself.