Singer One Instruction Manual 2 - Page 6
alternating
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4 Motor Can be Operated on Either Alternating Current or Direct Current The electric motor, which is built in Machines 101-4 and 101-12, can be operated on either direct current or 25 to 75 cycle alternating current without change of adjustment. The standard windings of the motor are for 110-120 volts, but motors can also be furnished for any voltage between 50 and 250. Special motors for 32 volts direct current and above 75 -cycle alternating current have also been developed and are available. Points to Determine Before Connecting Motor to Electric Service Line Obtain the following information from the Electric Light Company which supplies the electric current for the circuit to which the motor is to be connected: 1. Whether alternating current or direct current is used.. 2. What is the voltage? The voltage must be within the range stamped on the motor name plate (B, Fig. 2, page 5). 3. If the electric service line is alternating current, what is the number of cycles? The number of cycles must be within the range stamped on the motor name plate. 4. The current and voltage of the electric service line and, if alternating current, the number of cycles, can be verified by looking at the name plate on electric meter installed by the local Electric Light Company.