Twentieth century hand-book for steam engineers and electricians with questions and answers; a practical non-technical treatise .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & company · leaf 1344
r whose armatureA, Fig. 620, is supplied with current from the mainsthrough a high resistance P in the back of the instrument,and a small field coil on right-hand side. Electro Meters 1315 This armature is in shunt across the circuity hence itscurrent is proportional to the voltage. The main… … Fig. 619thomson recording watt-hour meter The armature shaft goes on past the commutator, to acyclometer with dials like a gas meter. The revolutions arehere recorded as watt-hours. The auxiliary field is just strong enough to nearly over-come the friction in the bearings and cyclometer, so that…
