Electricity and Engineering

Electricity and Engineering

4.11 - 1251 ratings - Source

When the talking circuit is in use the receiver must be in connection with the line wires, and the transmitter, battery and primary ... represent the outline of a telephone box attached to the wall, and the broken lines (-a€”a€”-a€”~-) represent theanbsp;...

Title:Electricity and Engineering
Publisher: - 1911


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