DIY 12v Trigger Box?

[Hilltop Hippy]

Hi guys,

 

This seems to come up on various forums at various times, without a satisfactorily cheap solution. Only the Audiophonics adapters seem to fit the bill and they're expensive.

 

Does anyone know of a switch (highlighted/represented below in yellow), that will take a 12v trigger signal from an AVR? basically just an on/off switch that I can hook up to a contactor and then plug a powerboard into that?

 

As I understand it, when the AVR is on, its a solid 12v signal at something like 100mA. So I need a switch that turns on when it receives a 12v supply and turns off when there is no supply.

 

Any thoughts? is there some solid state relay out there that'd do it? Maybe one of these?

 

 

 

Edited September 27, 2022 by Hilltop Hippy

[davewantsmoore]

2 hours ago, Hilltop Hippy said:

Maybe one of these?

Not 100% sure, but it doesn't seem to be available for a whole lot less than the 25 EUR audiophonics.fr device (which is a neat solution).

[Hilltop Hippy]

24 minutes ago, davewantsmoore said:

Not 100% sure, but it doesn't seem to be available for a whole lot less than the 25 EUR audiophonics.fr device (which is a neat solution).

 

I need 6 or 7 of the bloody things.....gets kinda expensive.....

[davewantsmoore]

13 hours ago, Hilltop Hippy said:

I need 6 or 7 of the bloody things

Can't you connect a power board to just one?

[Hilltop Hippy]

2 minutes ago, davewantsmoore said:

Can't you connect a power board to just one?

 

8amp max. So probably need 2 or 3 all up

 

I think I've found a better relay, I've emailed the supplier to confirm. Then I'll talk to our sparky. We can mount this in a 19" rack sub-board, with its own RCBO and surge protection. Maybe even a Thor filter if we wanted to go mad with it.

[HdB]

There's a whole lot of self contained SSRs on eBay and some are even guaranteed and tested and operate with a few volts dc  that'll do the job perfectly but you'll need to assemble them for mains use and get this safety tested - not at all a difficult procedure.

 

Or you can buy them from companies like MattBlatt, Fastron, etc and get an electrician to assemble them.

 

Many ways to solve the problem ...

[Guest Mr Thorens]

11 hours ago, Hilltop Hippy said:

 

8amp max. So probably need 2 or 3 all up

 

Is 8 amps around 2000w, that’s a lot of power. 

[joz]

Would a master slave power board suffice?

[Hilltop Hippy]

7 hours ago, joz said:

Would a master slave power board suffice?

 

I've tried them in the past, they kept dying on me....plus the 7 power amps I need now

[joz]

Is having 12volt triggers fitted to your amps to much?

it can be done.