. The principles underlying radio communication . Fia. 13)5 3ooV. JNIII PynAmoTbr connecTiona for co^ver3ion from lo to 3oo Volta Lev/ Voltage Doy ble cwrrenl* ^enerATor•for low and hi^h Voltage. VoltA^e 5- 5hunT colli D- Differential colls Re^- - AulbmaTic r^uliTor motor. An application which will occur to the radio studentis the securing from batteries giving only 10 or 12 volts of the300 or more volts required for supplying the plate potential ofelectron tubes used as generators of radio-frequency alternatingcurrent. (See Fig. 135.) In the dynamotor two separate arma-ture windings are place
. The principles underlying radio communication . Fia. 13)5 3ooV. JNIII PynAmoTbr connecTiona for co^ver3ion from lo to 3oo Volta Lev/ Voltage Doy ble cwrrenl* ^enerATor•for low and hi^h Voltage. VoltA^e 5- 5hunT colli D- Differential colls Re^- - AulbmaTic r^uliTor motor. An application which will occur to the radio studentis the securing from batteries giving only 10 or 12 volts of the300 or more volts required for supplying the plate potential ofelectron tubes used as generators of radio-frequency alternatingcurrent. (See Fig. 135.) In the dynamotor two separate arma-ture windings are placed on a common core. One acts as amotor, the other as a generator. There is but one frame and OPERATING TROUBLES. 227 one set of field magnets. The two windings are connected tocommutators at opposite ends of the shaft. The ratio of volt-ages is fixed when the machine is built, so the output voltagedepends on the voltage applied. The field coils receive currentfrom the same source as the motor armature. 105. Double-Current Generators.—A dynamotor can be drivenby mechanical power as a generator, and can then deliver d. two different voltages. Such machines have been designedfor fan d
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Keywords: ., bookcentury1900, bookdecade1920, bookpublisherwashi, bookyear1922
