1)
Does it make any sense to use 4 pole relay
and connect for L - two poles together (to minimize resistance),
same for N.

2)
Also amp spec says:
This unit is supplied in the U.K. with a mains lead fitted with a moulded 13 amp plug.
250 watts per channel into 8 Ohms
Power Consumption 1200W

Can I use relay

Poles	4
Rated carry current	10 A

Thanks

 

@crutschow
dont wanna use device that input noise ... i have separate 230V circuit from CB dedicated for audio and dont wanna run on it any chinese device as these sockets.... just one to be able switch L/N on that circuit with mechanical relay.

 

dont wanna use device that input noise

Why do you think they generate noise?
The smart plugs contain a WiFi transceiver that controls a latching mechanical relay.
Nothing to generate noise in your audio system.

 

@crutschow i dont know... still whats the issue with one proper Omron relay?

 

@crutschow i dont know... still whats the issue with one proper Omron relay?

Just more complicated if you want it to be voice controlled.
Doesn't meet the KISS rule which I usually try to follow.

 

@crutschow got your point but i liked the idea that Omron is really great quality relay which costs like whole wifi socket itself.
Sure i will have to add another electronic to control that relay... but should be fine.

if someone can double check and confirm #121, so can order relays,
https://forum.allaboutcircuits.com/...my-audiophile-hifi-system.207798/post-2007186

 

@crutschow got your point but i liked the idea that Omron is really great quality relay which costs like whole wifi socket itself.
Sure i will have to add another electronic to control that relay... but should be fine.

if someone can double check and confirm #121, so can order relays,
https://forum.allaboutcircuits.com/...my-audiophile-hifi-system.207798/post-2007186

Okay, I see you are apparently a belt and suspenders type of guy.

Yes the relay and configuration in post 121 should work fine.

 

@crutschow i just also read that for example for an amp (consuming higher power/higher current) its recco to use relays with the less resistance, less than 50m ohm. So who know whats resistance in cheap power sockets?

thanks for the confirmation, decided to go with the following 10A 2 pole (N,L) omron with resistance 50m ohm
https://industrial.omron.co.uk/en/products/LY2N-D2-24VDC

 

So who know whats resistance in cheap power sockets?

If you buy one rated for 15A, it's more than likely low enough for your purposes.

 

@crutschow thanks
well i think i am done here, out of the energy, ordered mentioned 10A ; 2 poles relay and lets see...

For that line they state Contact resistance same for L1, L2, L4... hopefully it will be fine.

Maybe in case i switch both L, N ... in case of storm etc... device will be also protected. No idea how relay behaves in case of storm and issue light building hit by thunder...

 

n case of storm etc... device will be also protected.

Only if the transient voltage is below the spark-gap voltage of the open contacts separation distance.

 

Only if the transient voltage is below the spark-gap voltage of the open contacts separation distance.

and how to find out that?


Also i think in scenario as mine ie i have Live, and Neutral is crossed(connected) to the ground;
I can only switch on/off Live only, bc of safety.

 

and how to find out that?

Testing of the relay.

 

Testing of the relay.

dont get it ..

 

dont get it ..

You'd have to apply an increasing high voltage from the wiper to the NO contact to determine the arc over voltage.
Have to have a high voltage source to do that.

You might consider adding a transient suppressor outlet to your system (example below).

 

You'd have to apply an increasing high voltage from the wiper to the NO contact to determine the arc over voltage.
Have to have a high voltage source to do that.

isnt that part of the Relay spec?

 

isnt that part of the Relay spec?

Not typically.

 

Hi i can confirm it works with 2 omron relays flawlessly. Currently controlling DAC.
Next step - utilizing second relay - to control Amp. Than some proper box, cabling.. And securing....

The small board with blue relays is zigbee module powering on / off omron relays, bc of the smart home automation inside home assistant.

Thanks all.

 

thats almost completed with 2 relays for 2 devices

 

Nice build