hello : ) i am new to electronics, i hope someone can help.

i am wondering how it might be possible to convert an audio line level wave; perhaps 1000 hz 0 db signal into a 5volt 2 amp DC power output to trigger a relay such as a "Ds2Y-SDC5v Nais DPDT 5v 2A DiP Relay"

hope that made sense. any help would be great : ) thanks.

 

The data sheet - http://www.alldatasheet.com/datasheet-pdf/pdf/82416/NAIS/DS2Y-S-DC5V.html - indicates that it takes 40 ma @ 5 volts to operate the relay. It is the contacts that can carry the 2 amps.

You could probably use a narrow filter, twin-T for instance, to give an output to operate a voltage comparator that could pull in the relay.

 

thanks for your reply: )

I've found that Line level signal is AC ,with consumer electronics running at -10dbv

= 0.316 VRMS

So perhaps I need to find a different relay that will switch on that signal, or convert the weak line level AC signal into something more usable?

I shall check out the twin -T.

Can anyone else help regards a relay idea?

: )