"The phone is a remarkably complex, simple device, and very rarely ever needs repairs, once you fix them." - Dan/Panther
Started by AlexL, November 13, 2022, 04:18:03 PM
Quote from: TelePlay on November 13, 2022, 09:41:41 PMAs your apt super. Probably 60 Hz and 18 VAC.Your phone requires 90 VAC, or so, at 20 Hz to operate the ringer.I don't think you can do what you want directly.However, your intercom power could be used to trip a relay which could turn on a ring generator connected to your phone's ringer. That would leave the problem of interfacing the phone's handset to the intercom talk circuit.Maybe someone else on the forum has done all this and can explain how they did it.
Quote from: AlexL on November 13, 2022, 08:50:23 PMHow can I check both values?
Quote from: markosjal on November 15, 2022, 04:44:13 PMiT does not matter if the intercom buzzes from AC or DC . if AC, Put a bridge rectifier on it with a Capacitor across it's output and a Solid State relay . For DC trigger a solid state relay directly. This Solid state relay can then trigger a ring generator of your preference. It's not rocket science.