File:The Armstrong super-regenerative circuit (1922) (14574208828).jpg

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Identifier: armstrongsuperre01eltz (find matches)
Title: The Armstrong super-regenerative circuit
Year: 1922 (1920s)
Authors: Eltz, George Jacob, b. 1893
Subjects: Radio
Publisher: New York, N.Y. : Radio Directory and Pub. Co.
Contributing Library: Northeastern University, Snell Library
Digitizing Sponsor: Northeastern University, Snell Library

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positive potential on the grid and being increased withnegative potential on the grid. In operation the regenerative ampli-fier circuit is adjusted to a condition which would result in oscilla-tion if the low frequency oscillator were not operating. This settinginsures a high value of negative resistance and each time the positiveresistance is decreased below the value of the negative resistance inthe circuit a large current flows resulting in a strong amplificationof the signal. As explained in Chapter I the average resistance ofthe circuit is positive and oscillation will not occur in the amplifiercircuit but the large currents flowing at the time when the negativeresistance is greatest, result in an amplification of great magnitude. As this is probably the circuit which will find the greatest appli-cation in practice, the function of each part will be consideredseparately. Refer to Fig. 2. The values given are for amateur and broad-casting wavelengths. 1, 2 and 3. Amplifier tubes.
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bo ^U o ^>-P bo O) H O .ti O 3 e St, T^ a !=1c3 M 0) +j -a OJ ^ c C fc cS O J=l C^ iH 0) ^ o CJ tH 03 QJ ■a « a (h S 0 go 00 5 o b ^ ^ *-• ■•+1 oo1^ »*» >i §11 •i^ m ra lO COrH O o o MO lO o 3 w ^ :3 rt *^ .2 03 o ^ o ^ o3 ^ (B 03 . 3 Q) O OlO 03OP rC --* o g«) O _) OK S 03 M <D to tc .ii i^ Oj a- Oi OJ 03 .t, « op. .3 - 2c ce J. M cJ O fo fl o o a Tjp -r Mo H in. H-l ^ 3 ,5^ -3 O 03 <i O r-, ^ f*. 3 o c ojOtH The Armstrong Super-Regenerative Circuit 17 iniiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiuiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii^ 4. Plate or tickler coil of the regenerative amplifier. Thiscoil is similar to the one described in Chapter I. It consistsof a variometer ball wound with No. 22 S. C. C. wire about50 turns being satisfactory. 5. This is the grid coil. It is conveniently made, if used ex-actly as shown with the loop in parallel, by winding

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  • bookid:armstrongsuperre01eltz
  • bookyear:1922
  • bookdecade:1920
  • bookcentury:1900
  • bookauthor:Eltz__George_Jacob__b__1893
  • booksubject:Radio
  • bookpublisher:New_York__N_Y____Radio_Directory_and_Pub__Co_
  • bookcontributor:Northeastern_University__Snell_Library
  • booksponsor:Northeastern_University__Snell_Library
  • bookleafnumber:17
  • bookcollection:northeastern
  • bookcollection:blc
  • bookcollection:americana
Flickr posted date
InfoField
27 July 2014

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