Hi there! Although I’ve been playing around with Arduino for a while, I am completely new to sound engineering issues, which I am running into right now, so I hope some of you can shed some light on my project! This is what I intend to do: My goal is to have 3 old cord phones rung from an Arduino…

[image] Generating rings | Details | Hackaday.io Ringing the 100+ year old bells turned out to be one of the more challenging things to accomplish. Due to the vast distances that signals had to travel to reach rural subscribers in the late 1890's, the ring signal is actually 90 volts AC …

Ringing old phones from amplified audio - Amplification issues

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DrDiettrich September 23, 2025, 5:44pm 7

and a proper 40V DC power supply at a current rating depending on your phones.

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Ringing old phones from amplified audio - Amplification issues

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