Phone silencer circuit

[electron]

I was looking around for a phone/ring silencer circuit, and after finding many complicated circuits, I found this one:

http://www.hometoys.com/tips/tips14.htm (entry #5)

Is there any reason why I shouldn't be using this? What do I have to change so I can control this with my SECU16 (I assume a different relay)? If there is a more dummy proof diagram out there, that would be appreciated as well. Thanks!

 

[Guy Lavoie]

Someone on the Appdig board is trying out that circuit. He says it works but appears to interfere with his DSL internet access. I suggested that he add one diode in series with each exisitng diode, to increase the forward bias voltage before the diodes start to conduct. I haven't heard back from him yet.

For a SECU16 output: you would need to use the output to control a DPDT relay as shown in the circuit. You can use pretty well any small relay to do this. You'll need a power source for the relay coil, but that can be shared with another device already using the same power supply. A relay with a !2vdc coil should be easy to find.