Drip UE-100

[DonnieDarko]

Some progress…

 

[DonnieDarko]

…

 

[DonnieDarko]

…some more guts.

 

[SonicSonar]

Thanks for the pics.

Did you use those sockets for the relays?  I am being told, do not use them because they will add noise to the circuit.
Which is good news.  Save myself $300 USD.

 

[ruairioflaherty]

Why would you socket a small signal relay? (genuine question as I've never seen it done)

 

[fobee]

Thanks for the pics.

Did you use those sockets for the relays?  I am being told, do not use them because they will add noise to the circuit.
Which is good news.  Save myself $300 USD.

Who told you that?

 

[SonicSonar]

It is logical.

Either solder directly or push relay into socket which  may or may not have an excellent connection.

Which connection is better or do you think they will be the same?

 

[emrr]

6 of one, half dozen of the other as they say.  Relays are a mechanical part that will eventually fail, and with so many the odds are good that one will fail within a few years.  You can approach that several ways. 

 

[SonicSonar]

I wonder if there is some fail safe circuit protection of the relays in the build.
The pdf below has a wealth of info that I will need to look again


Here are some specs on relays from OMRON

Durability

Mechanical 15,000,000 operations min. (at 36,000 operations/hr)
Electrical 100,000 operations min. (at 1,800 operations/hr)

AC: 100,000 operations min.,
DC: 300,000 operations min.
(at 1,800 operations/hr)

• Long-term Continuously ON Contacts
Using the Relay in a circuit where the Relay will be ON
continuously for long periods (without switching) can lead to
unstable contacts because the heat generated by the coil itself
will affect the insulation, causing a film to develop on the contact
surfaces. Be sure to use a fail-safe circuit design that provides
protection against contact failure or coil burnout.

http://www.omron.com/ecb/products/pdf/precautions_pcb.pdf

■ Contacts
The contacts are the most important constituent of a relay. Their
characteristics are significantly affected by factors such as the.
material of the contacts, voltage and current values applied to
them (especially, the voltage and current waveforms when ener-
gizing and de-energizing the contacts), the type of load, operating
frequency, atmosphere, contact arrangement, and bounce. If any
of these factors fail to satisfy predetermined values, problems
such as metal deposition between contacts, contact welding,
wear, or rapid increase in the contact resistance may occur.


PCB Soldering
...However, unless
the relay is fully sealed, when soldered onto a PCB, flux may pen-
etrate into the housing, adversely affecting the internal circuitry.....

PCB Selection
....Although seemingly an uninvolved process, soldering and its
related processes of flux application, relay mounting, heat appli-
cation, and washing can be detrimental to a relay’s performance.

 

[DonnieDarko]

I built a TG1 a while ago, and some weeks ago one of the relays on the bypass board of one channel failed, so I had to exchange it.

In my 670V2 there is a relay based circuitry for the M/S Matrix, one of the 8 or 10 relays used in that circuit was also a bad one.

So in my experience, yeah, it might not be a bad idea using those extra sockets when working with so many relays.

 

[fobee]

I built a TG1 a while ago, and some weeks ago one of the relays on the bypass board of one channel failed, so I had to exchange it.

In my 670V2 there is a relay based circuitry for the M/S Matrix, one of the 8 or 10 relays used in that circuit was also a bad one.

So in my experience, yeah, it might not be a bad idea using those extra sockets when working with so many relays.

Do you have a schematic for some true bypass with relays? I would like to build some for the UE-100 as well as for the 670.
Your help would be appreciated .

 

[DonnieDarko]

You just want to route the signal from the Inputs directly to the outputs, bypassing the whole circuit right?

Or do you wanna still go through the amps?

 

[fobee]

You just want to route the signal from the Inputs directly to the outputs, bypassing the whole circuit right?

Or do you wanna still go through the amps?

No I don't wanna go through the amps. Just Inputs to outputs.

 

[DonnieDarko]

It shouldn´t be too hard using some leftover relays and a prototype board.

I will work something out.

 

[fobee]

Any of you guys powered this beast yet?

 

[Bonsaimaster]

Any updates on builds?

 

[DonnieDarko]

Still waiting for a working case for my unit.

 

[kambo]

any news  8)

 

[DonnieDarko]

Yes, I made an extra thread - check it out:

http://groupdiy.com/index.php?topic=58283.0

 

[vinyvamos]

So five years or so on, are we seeing any failed relays??? I only realised the other day that Drip made this project once upon a time. A rather complex piece of gear with a somewhat astronomical BoM cost. But why all the relays? Remote control through USB?  ;D