. Practical wireless telegraphy; a complete text book for students of radio communication . connected inparallel having capacity of .001 mfds. each. These are mounted in a metal rack behind thepanel. This set is also fitted with a single pole double throw high potential switch which eitherconnects the aerial to the transmitter or connects it directly to earth for protection againstlightning. This switch operates independently of the antenna changeover switch. The automatic starter supplied with this set has been shown diagrammatically in Fig. 74,but the diagram. Fig. 255, outlines the circuits
. Practical wireless telegraphy; a complete text book for students of radio communication . connected inparallel having capacity of .001 mfds. each. These are mounted in a metal rack behind thepanel. This set is also fitted with a single pole double throw high potential switch which eitherconnects the aerial to the transmitter or connects it directly to earth for protection againstlightning. This switch operates independently of the antenna changeover switch. The automatic starter supplied with this set has been shown diagrammatically in Fig. 74,but the diagram. Fig. 255, outlines the circuits more as they appear on the actual starter consists essentially of two magnets fitted with armatures, one of which con-nects the motor armature to the D. C. line through a single resistance coil and the other cutsout this resistance thereby connecting the motor direct to the D. C. line. Appropriate resist-ance coils are connected in series with the solenoid windings automatically, when the starter MOTORRHEOSTAT AERIAL TUNINGINDUCTANCE WAVE LENGTHSWITCH - AUTOMATIC-MOTORSTARTER. GENERATORRHEOSTAT ^LOW POWERSWITCHAERIALAMMETER LIGHTNINSSWITCH COUPLINQADJUSTER QUENCHEDGAP ROTARVGAP Fig. 257—Front View of tlie Marconi J^ K. W. 500 Cycle Transmitter. 238 PRACTICAL WIRELESS INDOCTANCE
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
