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Connecting Two Landline Telephones Together Update.

Published on Sat, Apr 13th 2024 Education Rectangular HD

I recently made a video, where I demonstrated how two ordinary landline telephones can communicate with each other, by plugging the phones into each other, and adding a 9 volt battery in parallel with the telephone wiring. After I made the video, some of the comments suggested I should have added my 9 volt battery in series with the phones, and when I followed your advice, I realized you were right, and it worked far better in a series circuit, so I wanted to update my video, and thank some of you guys, who informed me that my parallel circuit was inferior to a series circuit. One additional note on the Bell voltage. I've been informed by a gentleman who use to install telephones, that the bell voltage is typically 48 volts AC, but after searching around, I noticed a rather large variety of opinions on what it should be.