I need a telephone ring or buzzer circuit close to my extension phone by my bed side. (my phone has bust it's ring. The experts can't repair it.They did it twice. Just lasts one week!). A buzzer would be fine just to wake me up from my sleep. Bieng a doctor I get calls at odd times in the night. I surfed the Net but could not get a siutable circuit. Please help.
How about a simpler circuit that uses the phone power to light something...like an LED? When I go run on my treadmill on the patio, I have headphones on listening to radio or TV. There is a phone plug nearby...no extra 110V. I'd just like to see something like an LED flash with the ring. Is there such a simple circuit using the phone company's power? Thanks, Brad
Often you can connect a neon bulb accross the phone line with a high value of series resistor. Phones ring at about 90-120V, which will light the bulb.
Telephone ring circuit
Posted - Dec 11 2005 : 09:03:58 AM
