. Practical wireless telegraphy; a complete text book for students of radio communication . -Characteristic Curvesistance. of Ordinary Re-. 138 PRACTICAL WIRELESS TELEGRAPHY. direction of best conductivty and the voltage again progressively increased, the results donot accord with Ohms law as the curve, Fig. 157, clearly indicates, e. g., the current is notproportional to the voltage. It will be seen that at first the current does not increase asrapidly as it should to be in accord with Ohins law and after a certain critical value ofvoltage is passed the current exceeds the value to be expecte
. Practical wireless telegraphy; a complete text book for students of radio communication . -Characteristic Curvesistance. of Ordinary Re-. 138 PRACTICAL WIRELESS TELEGRAPHY. direction of best conductivty and the voltage again progressively increased, the results donot accord with Ohms law as the curve, Fig. 157, clearly indicates, e. g., the current is notproportional to the voltage. It will be seen that at first the current does not increase asrapidly as it should to be in accord with Ohins law and after a certain critical value ofvoltage is passed the current exceeds the value to be expected by the same law. A curveof this type is said to have a rising characteristic. We may now assume this curve to apply to the detector circuit of Fig. lS3a and thatsignals are being received from a given station. Let the E. M. F. of the battery be three volts. From the curve, ?n Fig. 157, we note that the corresponding cur-rent is 6 let the alternatingcurrent of radio-fre-quency (the incomingsignal) have for pur-poses of illustration apotential of one volt andlet it be superposed uponthe battery current flow-ing throu
Size: 2204px × 1133px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjecttelegra, bookyear1917
