Controlling amp power through Powerlink

I'm using a non-B&O amp with a Beolink Active, and would like the amp's power to be switched on/off automatically by Powerlink. Any suggestions?  I could build my own box with a relay connected to the appropriate Powerlink signal, but would like to avoid this if possible.

--Paul

There is a unit made by Niles, the AC-3 that does what you want. But it depends on the powerlink trigger power, it has to be a minimum of 100ma to actuate this particular switch. Does anyone know what the exact amperage is on a powerlink trigger?

There is also the official B&O mains switch, which is designed for use with powerlink. Member Jeff has a thread going on one of these but I haven't been able to keep up with it! I'm sure he has covered all relevant info regarding this switch in that thread.

If you end up building one, show it off! I would like to see it

Evan:

But it depends on the powerlink trigger power, it has to be a minimum of 100ma to actuate this particular switch. Does anyone know what the exact amperage is on a powerlink trigger?

Certainly less than 100 mA. That's a huge current to use for this purpose! Is the box running a relay directly off that or what?

A typical Beolab will need less than 1 mA to turn on. Dunno about Beolink Active, but a typical Beomaster certainly won't like you drawing anywhere near 100 mA from the Powerlink "on" signal.

Is this what you are looking for?

http://www.beoworld.org/beotech/circuit.htm

guyowen:

Is this what you are looking for?

http://www.beoworld.org/beotech/circuit.htm

yup, pretty much if I do my own, plus a box to house it with all the required connectors. THanks for the link While I'm at it, I'd probably add a secondary audio input circuit since my Beolink Active box is old enough to not have an aux/PC input.

-- Paul

Note that the circuit is a bit silly - just use a relay with a coil rated for whatever supply voltage you have available, and you can omit the voltage regulator along with the caps around it.

I.e +12V supply -> 12V relay -> all you need is the transistor, its base resistor and the diode.