American telegraphy and encyclopedia of the telegraph; systems, apparatus, operation (1909)
Maver, William, jr. [from old catalog] · New York, Maver publishing company · leaf 145
red to include the convolutionso, I and 10 the plug is inserted as shown in Fig. 93.It is sometimes desirable to be able to reduce thedeflection of the needle without altering the electro-This may be done by placing in the galvanometer cir-cuit one or more of the resistance coils r r, which may be… … TANGENT GALVANOMETER (THEORY.) motive force of the batterv. Westeex rxiON tangent galvano:«:eter.—This form of tangent galvanometer,as constructed for service, is illustrated in Fig. 94. It is known as the WesternUnion Standard. The coils of wire of the galvanometer are contained in the…
Telegraph
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
